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1. Exclusive measurements on at 1AGev with the SPALADIN setup at GSI

Author: S. Pietri, A. Lafriakh, A. Le Fèvre, Thomas Aumann, S. Leray, M. Fernandez-Ordoñez, F. Rejmund, Michel Combet, W. F. J. Müller, W. Trautmann, C. Schwarz, Enrique Casarejos, E. Le Gentil, C.O. Bacri, Herbert A. Simon, J. Lukasik, J.E. Ducret, C. Sfienti, A. Boudard, O. Yordanov, K. Kezzar, R. Krücken, J. Benlliure, A. Kelic, C. Volant, Håkan T Johansson, T. Kurtukian-Nieto, M. Böhmer, and Roman Gernhäuser
Subjects: Physics, Nuclear and High Energy Physics, Photon, Time projection chamber, Ion beam, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, chemistry.chemical_element, 01 natural sciences, 7. Clean energy, Nuclear physics, chemistry, Hodoscope, Dipole magnet, 0103 physical sciences, Physics::Accelerator Physics, Neutron detection, Spallation, Atomic physics, Nuclear Experiment, 010306 general physics, Instrumentation, Helium
Abstract: A new type of spallation experiments has been carried out at GSI, Darmstadt (Germany) in order to understand the spallation mechanism in greater details. These experiments use the inverse-kinematics technique where the ion beam is directed onto a liquid Hydrogen target, allowing the detection of heavy spallation residues in coincidence with low center-of-mass energy light particles. The setup is based on A Large Acceptance DIpole magNet (ALADIN) coupled with a multitrack Time Projection Chamber (TPC), a hodoscope and a neutron detector. First, data on 56 Fe + p at 1 A GeV were taken in February 2004. In the on-going analysis, isotopic cross-sections have been determined and compared to data taken at the FRagment Separator in GSI. Mean values and width of residue velocity distributions have also been obtained as well as Helium production cross-section. First, coincidence data are being analyzed.
Published: 2006
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2. Evaporation residues produced in spallation of 208Pb by protons at

Author: S. Czajkowski, J. Pereira, P. Armbruster, M. Bernas, R. Legrain, M. Pravikoff, L. Tassan-Got, B. Mustapha, F. Rejmund, S. Leray, B. Fernández-Domínguez, A. Boudard, Christoph A. Stephan, J. Taieb, B. Jurado, C. Volant, M. V. Ricciardi, K.-H. Schmidt, L. Audouin, E. Casarejos, T. Enqvist, W. Wlazlo, and J. Benlliure
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, Evaporation, 01 natural sciences, Effective nuclear charge, Ion, Nuclear physics, Ionization, 0103 physical sciences, Isobaric process, Spallation, 010306 general physics
Abstract: The production cross sections of fragmentation-evaporation residues in the reaction Pb+p at 500 A MeV have been measured using the inverse-kinematics method and the FRS spectrometer (GSI). Fragments were identified in nuclear charge using ionisation chambers. The mass identification was performed event-by-event using the Bρ-TOF-ΔE technique. Although partially-unresolved ionic charge states induced an ambiguity on the mass of some heavy fragments, production rates could be obtained with a high accuracy by systematically accounting for the polluting ionic charge states. The contribution of multiple reactions in the target was subtracted using a new, partly self-consistent code. The isobaric distributions are found to have a shape very close to the one observed in experiments at higher energy. Kinematic properties of the fragments were also measured. The total and the isotopic cross sections, including charge-pickup cross sections, are in good agreement with previous measurements and models. The data are discussed in the light of previous spallation measurements, especially on lead at 1 GeV. © 2006 Elsevier B.V. All rights reserved.
Published: 2006
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3. Very heavy fission fragments produced in the spallation reaction 238U+p at

Author: S. Leray, K.-H. Schmidt, T. Enqvist, Enrique Casarejos, J. Taieb, C. Volant, P. Armbruster, M. V. Ricciardi, M. Bernas, C. Stephan, J. Pereira, A. Kelic, J. Benlliure, A. Boudard, L. Tassan-Got, R. Legrain, and F. Rejmund
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Cold fission, Cluster decay, Isotope, 010308 nuclear & particles physics, Fission, Fission product yield, 01 natural sciences, Nuclear physics, 0103 physical sciences, Spallation, Neutron, 010306 general physics
Abstract: Fission fragments from 1 A GeV 238U ions impinging a hydrogen target are investigated by using the fragment separator FRS for magnetic selection of reaction products including ray-tracing, and ΔE-ToF techniques. On the basis of the kinematics of the fragments, binary fission can be assigned as production process up to very heavy fragments. Fission fragments are separated and identified as far as 184Re for the first time. Cross sections are measured and found in the range of 500 μb to 5 μb. Isobaric cross sections decrease smoothly with increasing masses. Beyond tungsten, fission fragments are hidden in the more abundant spallation evaporation residues. 283 isotopes of elements gadolinium to rhenium in the mass range 147 to 184 are observed and cross sections measured. All the fragments are formed by fission of excited parent nuclei following emission of a cascade of secondary neutrons.
Published: 2006
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4. Production cross-sections from neutron-deficient 92Mo at 500A MeV

Author: K. Sümmerer, Hans Geissel, B. Fernández-Domínguez, D. Cortina-Gil, B. Blank, J. Gerl, F. Rejmund, Marielle Chartier, Roy Crawford Lemmon, John Durell, S. Mandal, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Nuclear reaction, Nuclear and High Energy Physics, 24.10.-i , 27.50.+e, Nuclear Theory, Nuclear reaction models and methods, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, 59 <=A <= 89, Fragmentation (mass spectrometry), 0103 physical sciences, Nuclear fusion, Neutron, Nuclear Experiment, 010306 general physics, Physics, Spectrometer, Projectile, 010308 nuclear & particles physics, chemistry, Physics::Accelerator Physics, Atomic physics, Beryllium, Beam (structure)
Abstract: The projectile fragmentation of a 92 Mo beam onto a beryllium target at an incident energy of 500 A MeV has been studied at the high-resolution spectrometer FRS at GSI. The isotopic production cross-sections of the projectile fragments produced in the reaction have been determined. The data have been compared to the empirical parameterisation, EPAX, and to a microscopic nuclear reaction model, ABRABLA.
Published: 2005
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5. Nuclide cross-sections of fission fragments in the reaction 208Pb + p at 500 A MeV

Author: C. Volant, K.-H. Schmidt, F. Rejmund, B. Fernández-Domínguez, R. Legrain, M. Bernas, A. Boudard, C. Stephan, T. Enqvist, M. V. Ricciardi, M.S. Pravikoff, S. Czajkowski, L. Tassan-Got, B. Jurado, W. Wlazlo, J. Benlliure, J.-E. Ducret, J. Taieb, J. Pereira, P. Armbruster, Enrique Casarejos, S. Leray, B. Mustapha, L. Audouin, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H. Goutte, H. Faust, G. Fioni, D. Goutte, and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Spallation sources, Accelerator-driven systems, Nuclear and High Energy Physics, Fission, 24.75.+i, 25.85.Ge, 25.40.Sc, Nuclear Theory, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Nuclear physics, Recoil, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Nuclei identification, Recoil velocities, Spallation, Neutron, Nuclide, Nuclear Experiment, 010306 general physics, Physics, Fission products, 010308 nuclear & particles physics, 020206 networking & telecommunications, Spallation reaction, Physics::Accelerator Physics, 020201 artificial intelligence & image processing, Production of fission fragments, Excitation
Abstract: PACS conv.GSI; The isotopic distributions and recoil velocities of the fission fragments produced in the spallation reaction 208Pb + p at 500 A MeV have been measured using the inverse-kinematics technique, a lead beam onto a liquid-hydrogen target, and the high-resolution spectrometer FRS at GSI. The shapes of the different distributions are found in good agreement with previously published data while the deduced total fission cross-section is higher than expected from existing systematics and some previous measurements. From the experimental data, the characteristics of the average fissioning system can be reconstructed in charge, mass and excitation energy, and the average number of post-fission neutrons can be inferred. The results are also compared to different models describing the spallation reaction. The intranuclear cascade code INCL4 followed by the de-excitation code ABLA is shown to describe reasonably well the evolution of the isotopic distribution shapes between 500 and 1000 A MeV.
Published: 2005
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6. New experimental validation of the pulse height weighting technique for capture cross-section measurements

Author: L. Perrot, J. Pancin, F. Voss, Marco Radici, K. Wisshak, Ch.O. Bacri, V. Chepel, E. Berthomieux, L. Zanini, S. Marrone, P. Baumann, A. Lindote, T. Papaevangelou, M. Vincente-Vincente, Nicola Colonna, C. Tapia, M. Dahlfors, P. Vaz, G. Vannini, Per Carlson, M. Embid-Segura, H. Frais-Koelbl, E. Savvidis, F. Rejmund, H. Wendler, J. Salgado, A. Poch, Y. Giomataris, H. Álvarez, J. L. Tain, Saed Dababneh, L. Tavora, K.G. Ioannides, F. Gramegna, I. Duran, Aaron Couture, D. Cortina, M. Terrani, A. Goverdovski, George Kitis, F. Neves, P. M. Milazzo, A. Herrera-Martinez, Manuel Lozano, B. Berthier, R. Vlastou, F. Gunsing, Gerald Badurek, Ralf Plag, J. Benlliure, Alberto Mengoni, G. Cortes, A. Molina-Coballes, G. Aerts, A. Pavlik, N. Tsangas, Enrico Chiaveri, M. Rosetti, W. Rapp, P. Rullhusen, E. Gonzalez-Romero, R. Dolfini, N. Janeva, C. Domingo-Pardo, C. Eleftheriadis, E. Boscolo-Marchi, C. Paradela, E. Jericha, S. Markov, Roberto Capote, S. Lukic, A. Perez-Parra, Rene Reifarth, P. E. Koehler, P.A. Assimakopoulos, A. Kelic, I. F. Gonçalves, D. Cano-Ott, A. Plukis, P. Pavlopoulos, M.I. Lopes, F. Bečvář, P. Cennini, José M. Martínez-Val, S. David, J. M. Quesada, L. Tassan-Got, Sigfrido Boffi, S. Andriamonje, G. Tagliente, U. Abbondanno, Yacine Kadi, J.C. Soares, José Manuel Perlado, L. Ferrant, D. Karamanis, C. Borcea, C. Coceva, L. Ferreira-Lourenco, R. C. Haight, Heinz Oberhummer, Alfredo Ferrari, R. Ferreira-Marques, C. Stephan, S. O'Brien, E. Griesmayer, P. F. Mastinu, Michael Heil, A. Ventura, H. Beer, R. Terlizzi, E. Kossionides, H. Leeb, V. Ketlerov, D. Villamarin-Fernandez, F. Käppeler, Michael Wiescher, W.I. Furman, Carlo Rubbia, E. Mínguez, Subramanian Raman, A. J. M. Plompen, V. Peskov, V. Vlachoudis, A. Angelopoulos, N. Bustreo, G. Rudolf, P. Calviño, C. Moreau, V. Konovalov, V. Lacoste, C. Pretel, James L. Cox, Thomas Rauscher, A.J.P.L. Policarpo, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), TOF, U.Abbondanno, G.Aert, H.Alvarez, S.Adriamonje, A.Angelopoulo, P.Assimakopoulo, C.Bacri, C.Badurek, P.Bauman, F.Becvar, H.Beer, J.Benlliure, B.Berthier, E.Berthoumieux, S.Boffi, C.Borcea, N.Bustreo, F.Calvino, D.Cano-Ott, R.Capote, P.Carlson, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Corte, D.Cortina, A.Couture, J.Cox, S.Dababneh, M.Dahlfor, S.David, R.Dolfini, C.Domingo, I.Dura-Escribano, C.Eleftheriadi, M.Embid-Segura, L.Ferrant, A.Ferrari, L.Ferreira-Lourenco, R.Ferreira-Marque, H.Frais-Koelbl, W.Furman, Y.Giomatari, I.Goncalve, E.Gonzales-Romero, A.Goverdovski, F.Gramegna, E.Griiesmayer, F.GGunsing, R.Haight, M.Heil, A.Errera-Martinez, K.Ioannide, N.Janeva, E.Jericha, Y.Kadi, F.Kappeler, D.Karamani, A.Kelic, V.Ketlerov, G.Kiti, P.Koehler, V.Konovalov, E.Kossionide, V.Lacoste, H.Leeb, A.Lindote, I.Lope, M.Lozano, S.Lukic, S.Markov, S.Marrone, J.Martinez-Val, P.Mastinu, A.Mengoni, P.Milazzo, E.Minguez, C.Moreau, F.Neve, H.Oberhummer, S.O’Brien, J.Pancin, C.Paradela, A.Pavlik, P.Pavlopoulo, A.Perez-Parra, J.Perlado, L.Perrot, V.Peskov, R.Plag, A.Plomplen, A.Pluki, A.Poch, A.policarpo, C.Pretel, J.Quesada, M.Radici, W.Rapp, R.Reifarth, F.Rejmund, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, E.Savvidi, C.Stephan, G.Tagliente, J.Tain, C.Tapia, L.Tassan-Got, L.Tavora, M.Terrani, N.Tsanga, G.Vannini, P.Vaz, A.Ventura, D.Villamarin-Fernandez, M.Vincente-Vincente, V.Vlachoudi, R.Vlastou, F.Vo, H.Wendler, M.Wiescher, K.Wisshak, and L.Zanini
Subjects: Nuclear and High Energy Physics, TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Monte Carlo method, NUCLEAR PHYSICS, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMethodologies_ARTIFICIALINTELLIGENCE, 01 natural sciences, monte carlo simulations, Cross section (physics), Optics, 0103 physical sciences, neutron capture cross-sections, 010306 general physics, Instrumentation, Pulse height, Physics, 010308 nuclear & particles physics, business.industry, Liquid scintillation counting, Detector, TheoryofComputation_GENERAL, Experimental validation, NEUTRON CROSS SECTIONS, pulse height weighting technique, c6d6 scintillation detectors, Weighting, Neutron capture, ComputingMethodologies_PATTERNRECOGNITION, business
Abstract: The accuracy of the pulse height weighting technique for the determination of neutron capture cross-sections is investigated. The technique is applied to measurements performed with C6D6 liquid scintillation detectors of two different types using capture samples of various dimensions. The data for well-known (n, gamma) resonances are analyzed using weighting functions obtained from Monte Carlo simulations of the experimental set-up. Several causes of systematic deviation are identified and their effect is quantified. In all the cases measured the reaction yield agrees with the standard value within 2%. (C) 2003 Elsevier B.V. All rights reserved. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Published: 2004
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7. Fission-residues produced in the spallation reaction 238U + p at 1 A GeV

Author: F. Rejmund, Alain Boudard, Enrique Casarejos, S. Czajkowski, Laurent Tassan-Got, J. Taieb, Kjeld Schmidt, R. Legrain, M. Bernas, P. Armbruster, Timo Enqvist, J. Benlliure, J. Pereira, Sylvie Leray, M. V. Ricciardi, Christoph A. Stephan, B. Mustapha, C. Volant, P. Napolitani, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Hydrogen, Fission, Nuclear Theory, FOS: Physical sciences, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMethodologies_ARTIFICIALINTELLIGENCE, 01 natural sciences, 7. Clean energy, Spectral line, Momentum, Nuclear physics, Recoil, 0103 physical sciences, Spallation, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Projectile, TheoryofComputation_GENERAL, 3. Good health, ComputingMethodologies_PATTERNRECOGNITION, chemistry
Abstract: Fission fragments from 1 A GeV 238U projectiles irradiating a hydrogen target were investigated by using the fragment separator FRS for magnetic selection of reaction products including ray-tracing and DE-ToF techniques. The momentum spectra of 733 identified fragments were analysed to provide isotopic production cross sections, fission-fragment velocities and recoil momenta of the fissioning parent nuclei. Besides their general relevance, these quantities are also demanded for applications. Calculations and simulations with codes commonly used and recently developed or improved are compared to the data., Comment: 60 pages, 21 figures, 4 tables, 2 appendices (15 pages)
Published: 2003
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8. Evaporation residues produced in the spallation reaction at 1 AGeV

Author: R. Legrain, F. Rejmund, K.-H. Schmidt, T. Enqvist, J. Benlliure, B. Mustapha, W. Wlazlo, E. Casarejos, C. Stephan, L. Tassan-Got, M.S. Pravikoff, S. Czajkowski, C. Volant, M. Bernas, A. Boudard, S. Leray, P. Armbruster, and J. Taieb
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Fission, chemistry.chemical_element, Uranium, Tungsten, 01 natural sciences, 7. Clean energy, Nuclear physics, Momentum, chemistry, 0103 physical sciences, Physics::Accelerator Physics, Spallation, Nuclide, Atomic number, Nuclear Experiment, 010306 general physics
Abstract: The production of heavy nuclides from the spallation-evaporation reaction of 238U induced by 1 GeV protons was studied in inverse kinematics. The evaporation residues from tungsten to uranium were identified in-flight in mass and atomic number. Their production cross-sections and their momentum distributions were determined. The data are compared with empirical systematics. A comparison with previous results from the spallation of 208Pb and 197Au reveals the strong influence of fission in the spallation of 238U.
Published: 2003
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9. Experimental study on the production of light nuclei in spallation–fission reactions and projectile fragmentation of 238U

Author: T. Enqvist, B. Mustapha, K.-H. Schmidt, F. Rejmund, J. Benlliure, M. V. Ricciardi, S. Czajkowski, M.S. Pravikoff, L. Tassan-Got, R. Legrain, A. Boudard, S. Leray, P. Armbruster, C. Volant, M. Bernas, C. Stephan, Robert, Suzanne, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Reaction mechanism, Isotope, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, Fission, Nuclear Theory, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Uranium, 7. Clean energy, 01 natural sciences, Nuclear physics, chemistry, 0103 physical sciences, Spallation, Nuclide, Atomic physics, Nuclear Experiment, 010306 general physics, Projectile fragmentation, Beam (structure)
Abstract: With the inverse kinematics method, the reaction mechanism which leads to the formation of light nuclides was investigated with a 1 A GeV 238 U beam impinging on a liquid H 2 target. Isotopes of all elements with Z ⩾6 were unambiguously identified, and the velocity of every produced nuclide was measured with great precision. Results show that very asymmetric fission of uranium nuclei produces neutron-rich isotopes of elements down to around charge 10. When uranium interacts with heavier nuclei the features of the reaction change drastically: while fission is the main mechanism for the production of light masses in 1 A GeV 238 U on H 2 , projectile fragmentation plays a dominant role in 1 A GeV 238 U on Ti leading to the formation of stable or neutron-deficient isotopes of all elements.
Published: 2002
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10. Influence Of The Neutron Richness On Binary Decays

Author: Dan Shapira, N. Le Neindre, J. Gomez del Campo, Elio Rosato, A. Galindo-Uribarri, P. Lautesse, R. Dayras, A. Chbihi, C. Beck, G. Spadaccini, G. de Angelis, E. Bonnet, M. Parlog, D. Pierroutsakou, M. F. Rivet, G. Ademard, R. Roy, R. Bougault, J.P. Wieleczko, Mariano Vigilante, B. Borderie, Antonio D'Onofrio, F. Rejmund, M. Romoli, M. La Commara, J.D. Frankland, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire, Université Laval [Québec] (ULaval), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), G., Ademard, J. P., Wieleczko, E., Bonnet, A., Chbihi, J. D., Frankland, M., LA COMMARA, M., Vigilante, E., Rosato, D'Onofrio, Antonio, G., Spadaccini, J., GOMEZ DEL CAMPO, C., Beck, B., Borderie, R., Bougault, R., Dayra, G., DE ANGELIS, A., GALINDO URIBARRI, P., Lautesse, N., LE NEINDRE, M., Parlog, D., Pierroutsakou, F., Rejmund, M. F., Rivet, M., Romoli, R. ROY AND D., Shapira, Jurado B.,Dubray N.,Bonneau L.,Gunsing F, LA COMMARA, Marco, Vigilante, Mariano, Rosato, Elio, A., D'Onofrio, Spadaccini, Giulio, J., Gomez del Campo, C., Bock, G., De Angeli, A., Galindo Uribarri, N., Le Neindre, R., Roy, and D., Shapira
Subjects: Nuclear reaction, Physics, 010308 nuclear & particles physics, QC1-999, Binary number, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, Potential energy, 0103 physical sciences, Incident energy, Neutron, Species richness, Atomic number, Atomic physics, 010306 general physics, Nuclear Experiment
Abstract: The influence of the neutron richness on binary decays is investigated in 78,82Kr+40Ca reactions at 5.5 MeV/A incident energy. Kinetic energy distributions and angular distributions of fragments with atomic number 6≤Z≤28 were measured using the 4π-INDRA array. Global features are compatible with an emission from a long-lived system. The yields around the symmetric splitting are about 30% smaller for the neutron rich system. The persistence of strong structural effects is evidenced from elemental cross-sections of the light fragments. The cross-sections for odd-Z fragments are higher for the neutron rich CN while cross-sections for even-Z fragments are higher for the neutron poor CN. Calculations assuming two different potential energy surfaces are presented
Published: 2009
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11. The use of EXOGAM for in-beam spectroscopy of proton drip-line nuclei with radioactive ion beams

Author: M. Petri, E.S. Paul, P.J. Nolan, A.J. Boston, H.C. Boston, R.J. Cooper, M.R. Dimmock, S. Gros, B.M. McGuirk, G. Turk, D. Guinet, Ph. Lautesse, M. Meyer, N. Redon, B. Rossé, Ch. Schmitt, O. Stézowski, S. Bhattacharyya, G. De France, G. Mukherjee, F. Rejmund, H. Savajols, J.N. Scheurer, J. Gál, J. Molnár, B.M. Nyakó, J. Timár, L. Zolnai, K. Juhász, A. Astier, I. Deloncle, M.G. Porquet, A. Prévost, V.F.E. Pucknell, R. Wadsworth, P. Joshi, G. La Rana, R. Moro, M. Trotta, E. Vardaci, G. Hackman, G.C. Ball, Oliver Lodge Laboratory, University of Liverpool, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences (BAS), Department of Information Technology, University of Debrecen, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), STFC Daresbury Laboratory, Daresbury Laboratory, Department of Physics, University of York [York, UK], Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Istituto Nazionale di Fisica Nucleare (INFN), TRIUMF [Vancouver], EXOGAM, M., Petri, E. S., Paul, P. J., Nolan, A. J., Boston, H. C., Boston, R. J., Cooper, M. R., Dimmock, S., Gro, B. M., Mcguirk, G., Turk, D., Guinet, Lautesse, P. h., M., Meyer, N., Redon, B., Rossé, Schmitt, C. h., O., Stézowski, S., Bhattacharyya, G., De France, G., Mukherjee, F., Rejmund, H., Savajol, J. N., Scheurer, J., Gál, J., Molnár, B. M., Nyakó, J., Timár, L., Zolnai, K., Juhász, A., Astier, I., Deloncle, M. G., Porquet, A., Prévost, V. F. E., Pucknell, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, G. C. B. a. l., L., Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), University of Debrecen Egyetem [Debrecen], and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Radioactive ion beams, Nuclear and High Energy Physics, Proton, Fizikai tudományok, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, DIAMANT, Nuclear physics, EXOGAM, Recoil, Természettudományok, 0103 physical sciences, proton drip-line nuclei, 010306 general physics, Spectroscopy, Nuclear Experiment, Instrumentation, Line (formation), Physics, in-beam spectroscopy, Spectrometer, 010308 nuclear & particles physics, DIAMANT array of CsI charged-particle detectors, VAMOS, Physics::Accelerator Physics, Segmented Clover germanium detector, Linear polarisation, Atomic physics, Radioactive ion beam, EXOGAM array of HPGe detectors, Beam (structure)
Abstract: International audience; One of the first fusion–evaporation experiments using radioactive ion beams was performed at GANIL in order to study proton-rich nuclei of the light rare-earth region. The low production cross-section of the exotic species of interest, in combination with the low intensity of the beam and its induced background, demanded the use of a highly efficient experimental setup. This consisted of the EXOGAM γ-ray spectrometer coupled for the first time with both the DIAMANT charged-particle array and the VAMOS recoil spectrometer. In this report the experimental challenges of such studies will be discussed and the experimental achievements of the in-beam spectroscopy of proton drip-line nuclei using EXOGAM will be presented.
Published: 2009
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12. Isotopic yields and kinetic energies of primary residues in 1 A GeV 208Pb+p reactions

Author: M. Bernas, W. Wlazlo, S. Leray, J. Benlliure, B. Mustapha, A. Boudard, R. Legrain, F. Rejmund, C. Volant, T. Enqvist, J. Taieb, P. Armbruster, M.S. Pravikoff, C. Stephan, S. Czajkowski, L. Tassan-Got, K.-H. Schmidt, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Reaction mechanism, 010308 nuclear & particles physics, Fission, Nuclear Theory, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 7. Clean energy, 01 natural sciences, Nuclear physics, chemistry, Fragmentation (mass spectrometry), 0103 physical sciences, Physics::Accelerator Physics, Spallation, Nuclear Experiment, 010306 general physics, Projectile fragmentation, Titanium
Abstract: The production of primary residual nuclei in the reaction 1 A GeV 208Pb on proton has been studied by measuring isotopic distributions for all elements from titanium (Z=22) to lead (Z=82). Kinematical properties of the residues were also determined and used to disentangle the relevant reaction mechanisms, spallation (projectile fragmentation) and fission. The fragment separator FRS at GSI, Darmstadt, was used to separate and identify the reaction products. The measured production cross sections are highly relevant for the design of accelerator-driven subcritical reactors and for the planning of future radioactive-beam facilities.
Published: 2001
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13. Influence of the N/Z ratio on Disintegration Modes of Compound Nuclei

Author: J. P. Wieleczko, E. Bonnet, J. Gomez del Campo, M. La Commara, M. Vigilante, J. D. Frankland, A. Chbihi, E. Rosato, G. Spadaccini, A. Galindo-Uribarri, D. Shapira, C. Beck, B. Borderie, R. Bougault, R. Dayras, G. De Angelis, P. Lautesse, N. Le Neindre, A. D’Onofrio, M. Parlog, D. Pierroutsakou, F. Rejmund, M. F. Rivet, M. Romoli, R. Roy, K. Ernst Rehm, Birger B. Back, Henning Esbensen, C.J. (Kim) Lister, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), INDRA, Dipartimento di Matematica e Fisica (DMF), AREA MIN. 02 - Scienze fisiche, J. P., Wieleczko, E., Bonnet, J., GOMEZ DEL CAMPO, M., LA COMMARA, M., Vigilante, J. D., Frankland, A., Chbihi, E., Rosato, G., Spadaccini, A., GALINDO URIBARRI, D., Shapira, C., Beck, B., Borderie, R., Bougault, R., Dayra, G., DE ANGELIS, P., Lautesse, N., LE NEINDRE, D'Onofrio, Antonio, M., Parlog, D., Pierroutsakou, F., Rejmund, M. F., Rivet, M., Romoli, AND R., Royl, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: State model, Physics, 010308 nuclear & particles physics, Fission, Cyclotron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Coincidence, Inelastic neutron scattering, Charged particle, law.invention, medicine.anatomical_structure, law, 0103 physical sciences, medicine, Atomic number, Atomic physics, 010306 general physics, Nuclear Experiment, Nucleus
Abstract: none 25 none J. P. WIELECZKO; E. BONNET; J. GOMEZ DEL CAMPO; M. LA COMMARA; M. VIGILANTE; J. D. FRANKLAND; A. CHBIHI; E. ROSATO; G. SPADACCINI; A. GALINDO-URIBARRI; D. SHAPIRA; C. BECK; B. BORDERIE; R. BOUGAULT; R. DAYRAS; G. DE ANGELIS; P. LAUTESSE; N. LE NEINDRE; D'ONOFRIO A; M. PARLOG; D. PIERROUTSAKOU; F. REJMUND; M. F. RIVET; M. ROMOLI; AND R. ROYL J. P., Wieleczko; E., Bonnet; J., GOMEZ DEL CAMPO; M., LA COMMARA; M., Vigilante; J. D., Frankland; A., Chbihi; E., Rosato; G., Spadaccini; A., GALINDO URIBARRI; D., Shapira; C., Beck; B., Borderie; R., Bougault; R., Dayras; G., DE ANGELIS; P., Lautesse; N., LE NEINDRE; D'Onofrio, Antonio; M., Parlog; D., Pierroutsakou; F., Rejmund; M. F., Rivet; M., Romoli; AND R., Royl
Published: 2008
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14. γ-ray Spectroscopy of Proton Drip-Line Nuclei in the A∼130 Region using SPIRAL beams

Author: O. Stézowski, D. Guinet, Ph. Lautesse, M. Meyer, N. Redon, B. Rossé, Ch. Schmitt, P. J. Nolan, A. J. Boston, R. Cooper, M. Dimmock, S. Gros, B. McGuirck, E. S. Paul, M. Petri, H. Scraggs, G. Turk, G. De France, S. Bhattachasyya, G. Mukherjee, F. Rejmund, M. Rejmund, H. Savajols, J. N. Scheurer, B. M. Nyakó, J. Gál, J. Molnár, J. Timár, L. Zolnai, A. Astier, I. Deloncle, M. G. Porquet, A. Prévost, K. Juhasz, R. Wadsworth, P. Joshi, G. La Rana, R. Moro, M. Trotta, E. Vardaci, G. Hackman, G. Ball, Ismail Boztosun, A. B. Balantekin, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), I. Boztosun, A.B. Balantekin, SPIRAL, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), O., Stezowski, D., Guinet, Lautesse, P. h., M., Meyer, N., Redon, B., Rosse, Schmitt, C. h., P. J., Nolan, A. J., Boston, R., Cooper, M., Dimmock, S., Gro, B., Mcguirck, E. S., Paul, M., Petri, H., Scragg, G., Turk, G., De France, S., Bhattachasyya, G., Mukherjee, F., Rejmund, M., Rejmund, H., Savajol, J. N., Scheurer, B. M., Nyako, J., Gal, J., Molnar, J., Timar, L., Zolnai, A., Astier, I., Deloncle, M. G., Porquet, A., Prevost, K., Juhasz, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, and G., Ball
Subjects: Physics, Spectrometer, Proton, DRIP LINE, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Charged particle, Properties of nuclei, nuclear energy level, Nuclear physics, 0103 physical sciences, Gamma spectroscopy, X- and γ-ray spectroscopy, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy, Nucleon, Beam (structure)
Abstract: Expérience GANIL; International audience; A fusion-evaporation experiment has been performed with a SPIRAL 76Kr radioactive beam in order to study the deformation of rare-earth nuclei near the proton drip-line. The experimental setup consisted in the EXOGAM gamma-array, coupled to the light-charged particles (LCP) DIAMANT detector and to the VAMOS heavy-ion spectrometer. The difficulties inherent to such measurements are enlightened. The coupling between EXOGAM and DIAMANT has been used to decrease the huge background caused by the radioactivity of the beam. It further permits assigning new gamma-ray transitions to specific residual nuclei. A gamma-ray belonging to the 130Pm level scheme has thus been observed for the first time.
Published: 2008
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15. Influence of Neutron Enrichment on Disintegration Modes of Compound Nuclei

Author: E. BONNET, J. P. WIELECZKO, J. GOMEZ DEL CAMPO, M. LA COMMARA, S. BARLINI, C. BECK, B. BORDERIE, R. BOUGAULT, A. CHBIHI, R. DAYRAS, G. DE ANGELIS, J. D. FRANKLAND, A. GALINDO-URIBARRI, T. GLODARIOU, V. KRAVCHUK, PH. LAUTESSE, J. MOISAN, N. LE NEINDRE, B. MARTIN, L. NALPAS, A. D. ONOFRIO, M. PARLOG, D. PIERROUTSAKOU, F. REJMUND, M. F. RIVET, M. ROMOLI, E. ROSATO, R. ROY, D. SHAPIRA, G. SPADACCINI, B. TAMAIN, M. VIGILANTE, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physics Division [Oak Ridge], Oak Ridge National Laboratory [Oak Ridge] (ORNL), UT-Battelle, LLC-UT-Battelle, LLC, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratori Nazionali di Legnaro (LNL), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Scienze Ambiantali, Seconda Universita di Napoli, Laboratoire de Physique Nucléaire, Université Laval [Québec] (ULaval), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), E., Bonnet, J. P., Wieleczko, J., GOMEZ DEL CAMPO, LA COMMARA, Marco, S., Barlini, C., Beck, B., Borderie, R., Bougault, A., Chbihi, R., Dayra, G., DE ANGELIS, J. D., Frankland, A., GALINDO URIBARRI, T., Glodariou, V., Kravchuk, Lautesse, P. H., J., Moisan, N., LE NEINDRE, B., Martin, L., Nalpa, A. D., Onofrio, M., Parlog, D. PIERROUTSAKOU F., Rejmund, M. F., Rivet, M., Romoli, Rosato, Elio, R., Roy, D., Shapira, Spadaccini, Giulio, B., Tamain, Vigilante, Mariano, National Institute for Nuclear Physics (INFN), and Université Laval
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, General Physics and Astronomy, FOS: Physical sciences, Charge (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, exotic decay, Excited state, 0103 physical sciences, isospin asimmetry, Neutron, Atomic physics, Nuclear Experiment (nucl-ex), 010306 general physics, cluster, Nuclear Experiment
Abstract: Cross sections, kinetic energy and angular distributions of fragments with charge 6$\le$Z$\le$28 emitted in 78,82Kr+40C at 5.5 MeV/A reactions were measured at the GANIL facility using the INDRA apparatus. This experiment aims to investigate the influence of the neutron enrichment on the decay mechanism of excited nuclei. Data are discussed in comparison with predictions of transition state and Hauser-Feshbach models., Comment: 8 pages, 1 figure, paper presented at the First Workshop on "State of the Art in Nuclear Cluster Physics" 13-16 May, 2008, at Strasbourg, France (SOTANCP2008) and accepted for publication at International Journal of Modern Physics E (Special Issue), Proceedings of SOTANCP2008 (to be published)
Published: 2008
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16. Cross Sections of Spallation Residues Produced in1AGeVP208bon Proton Reactions

Author: F. Rejmund, M. Bernas, S. Leray, J. Benlliure, C. Stephan, J. Taieb, K.-H. Schmidt, A. Boudard, M.S. Pravikoff, S. Czajkowski, P. Armbruster, R. Legrain, L. Tassan-Got, W. Wlazlo, B. Mustapha, C. Volant, and T. Enqvist
Subjects: Nuclear physics, Physics, Recoil, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Spallation, Nuclear Experiment, 010306 general physics, Nucleon, Kinetic energy, 01 natural sciences
Abstract: Spallation residues produced in 1 GeV per nucleon ${}^{208}\mathrm{Pb}$ on proton reactions have been studied using the Fragment Separator facility at GSI. Isotopic production cross sections of elements from ${}_{61}\mathrm{Pm}$ to ${}_{82}\mathrm{Pb}$ have been measured down to 0.1 mb with a high accuracy. The recoil kinetic energies of the produced fragments were also determined. The obtained cross sections agree with most of the few existing gamma-spectroscopic data. The data are compared with different intranuclear-cascade and evaporation-fission models. Drastic deviations were found for a standard code used in technical applications.
Published: 2000
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17. γ‐Spectroscopy and Radioactive Beams : How To Perform Channel Selection ?

Author: B. Rossé, N. Redon, O. Stézowski, C.h. Schmitt, D. Guinet, M. Meyer, P.h. Lautesse, P. J. Nolan, A. J. Boston, R. Cooper, M. Dimmock, S. Gros, B. McGuirck, E. S. Paul, M. Petri, H. Scraggs, G. Turk, G. De France, S. Bhattachasyya, G. Mukherjee, F. Rejmund, M. Rejmund, H. Savajols, J. N. Scheurer, A. Astier, I. Deloncle, M. G. Porquet, A. Prévost, B. M. Nyakó, J. Gál, J. Molnár, J. Timár, L. Zolnai, K. Juhasz, R. Wadsworth, P. Joshi, LA RANA, GIOVANNI, MORO, RENATA EMILIA MARIA, M. Trotta, VARDACI, EMANUELE, G. Hackman, G. Ball, B., Rossé, N., Redon, O., Stézowski, Schmitt, C. h., D., Guinet, M., Meyer, Lautesse, P. h., P. J., Nolan, A. J., Boston, R., Cooper, M., Dimmock, S., Gro, B., Mcguirck, E. S., Paul, M., Petri, H., Scragg, G., Turk, G., De France, S., Bhattachasyya, G., Mukherjee, F., Rejmund, M., Rejmund, H., Savajol, J. N., Scheurer, A., Astier, I., Deloncle, M. G., Porquet, A., Prévost, B. M., Nyakó, J., Gál, J., Molnár, J., Timár, L., Zolnai, K., Juhasz, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, G., Ball, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), S.V. Harissopulos, P. Demetriou, E. Julin, SPIRAL, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, 29.30.Kv, 29.25.Rm, radioactive ion beam, Proton, Spectrometer, Channel (digital image), 010308 nuclear & particles physics, Detector, Nuclear Theory, Particle accelerator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, law.invention, Nuclear physics, gamma-ray spectroscopy, law, 0103 physical sciences, Physics::Accelerator Physics, Gamma spectroscopy, sources of radioactive nuclei, 010306 general physics, Spectroscopy, Nuclear Experiment, radioactive ion beams, Beam (structure)
Abstract: International audience; An experiment has been performed using a SPIRAL $^{76}$Kr radioactive beam at GANIL to investigate rare-earth nuclei near the proton drip-line. The EXOGAM gamma array was coupled with the DIAMANT light charged-particle detector and the VAMOS spectrometer. We report here on the powerful of this setup to extract fusion-evaporation $\gamma$-rays from a large beam contamination.
Published: 2005
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18. Approaching r-process nuclei at N=126

Author: B. Jurado, K.-H. Schmidt, A. I. Morales, B. Blank, Enrique Casarejos, J. Giovinazzo, F. Rejmund, L Langanke, L. Audouin, F. Becker, Daniela Henzlova, O. Yordanov, J. Pereira, Ivan Borzov, J. Benlliure, H. Alvarez-Pol, P. Napolitani, B. Fernández, D. Cortina-Gil, T. Kurtukian-Nieto, Gabriel Martínez-Pinedo, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Noyaux exotiques (NEX), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, History, 010308 nuclear & particles physics, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Computer Science Applications, Education, Nuclear physics, 0103 physical sciences, 25.75.-q, 27.90.+b, 95.30.Cq, 25.70.Mn, 27.60.+j, r-process, Nuclide, Atomic physics, 010306 general physics, Nuclear Experiment
Abstract: International audience; The production of heavy neutron-rich nuclei approaching the r-process waiting point at N$\approx$126 has been investigated in fragmentation reactions of relativistic 238U and 208Pb projectiles. Using this technique we were able to identify 73 new heavy neutron-rich nuclei expanding considerably the north-west frontier of the chart of nuclide. Moreover, we were able to determine the half lives of 13 of those nuclides. The measured values are significantly shorter than the predictions used for r-process model calculations. These shorter half lives are understood as due to the role of first-forbidden transitions in the decays of these nuclei. The confirmation of these results for r-process nuclei at N$\approx$126 would indicate that the r-process at this point is faster than expected, leading to a larger production of the heaviest nuclei.
Published: 2011
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19. Production of new neutron-rich isotopes of heavy elements in fragmentation reactions ofU238projectiles at 1AGeV

Author: K.-H. Schmidt, Enrique Casarejos, F. Rejmund, D. Cortina-Gil, B. Fernández-Domínguez, P. Napolitani, B. Jurado, L. Audouin, H. Alvarez-Pol, J. Pereira, Arnd R. Junghans, T. Enqvist, J. Benlliure, and O. Yordanov
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Isotopes of uranium, Isotope, 010308 nuclear & particles physics, Projectile, 7. Clean energy, 01 natural sciences, Nuclear physics, Fragmentation (mass spectrometry), 0103 physical sciences, Neutron, Production (computer science), Isotopes of gold, 010306 general physics
Abstract: The production of heavy neutron-rich nuclei has been investigated using cold-fragmentation reactions of {sup 238}U projectiles at relativistic energies. The experiment performed at the high-resolving-power magnetic spectrometer Fragment Separator at GSI made it possible to identify 40 new heavy neutron-rich nuclei: {sup 205}Pt, {sup 207-210}Au, {sup 211-216}Hg, {sup 214-217}Tl, {sup 215-220}Pb, {sup 219-224}Bi, {sup 223-227}Po, {sup 225-229}At, {sup 230,231}Rn, and {sup 233}Fr. The production cross sections of these nuclei were also determined and used to benchmark reaction codes that predict the production of nuclei far from stability.
Published: 2010
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20. Structural effects in the nuclide distributions of the residues of highly excited systems

Author: A.V. Ignatyuk, M. V. Ricciardi, P. Napolitani, O. Yordanov, Aleksandra Kelić, Kjeld Schmidt, C. Villagrasa, F. Rejmund, L. Tassan-Got, Institut de Physique Nucléaire d'Orsay (IPNO), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, technology, industry, and agriculture, General Physics and Astronomy, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Molecular physics, Fragmentation (mass spectrometry), Excited state, 0103 physical sciences, Nuclide, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment
Abstract: New data from GSI on the production-cross-section for fragmentation of the systems 56Fe+p and 56Fe+Ti at 1 A GeV revealed the appearance of even-odd staggering in the cross-section distribution for chains of isotopes with given N-Z. The staggering is strongly enhanced for the chain N=Z, it reduces as the production moves away from the N=Z chain, and it reverses for the most neutron-rich odd-A residues. These phenomena, observed in the residues of rather violent reactions, are related to structural effects in the level-densities below the particle-emission threshold., 4 pages, 2 figures. 10th Nuclear Physics Workshop of Marie and Pierre Curie, 24 - 28 Septembre 2003, Kazimierz Dolny (Poland)
Published: 2010

21. Investigation of deep inelastic reactions in 238U + 238U at Coulomb barrier energies

Author: C. Golabek, S. Heinz, W. Mittig, F. Rejmund, A. C. C. Villari, S. Bhattacharyva, D. Boilley, G. De France, A. Drouart, L. Gaudefroy, L. Giot, V. Maslov, M. Morjean, G. Mukherjee, Yu. Penionzkevich, P. Roussel-Chomaz, C. Stodel, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Variable Energy Cyclotron Centre, Université de Caen Normandie (UNICAEN), Normandie Université (NU), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département de Physique Théorique et Appliquée (DPTA), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Flerov Laboratory of Nuclear Reactions [Dubna] (FLNR), Joint Institute for Nuclear Research (JINR), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Electric potential energy, Coulomb barrier, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear fusion, Neutron, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, Beam (structure)
Abstract: Expérience GANIL E511 , Spectromètre VAMOS; We investigated deep inelastic reactions in 238U+238U collisions at 6.09, 6.49, 6.91, 7.1 and 7.35×AMeV at the VAMOS spectrometer (GANIL). A large transfer of neutrons and protons was observed at all beam energies. For a transfer of more than 10 nucleons the total kinetic energy of the detected fragments becomes independent of the beam energy and reaches values far below the Coulomb barrier for spherical fragments. This points to the formation of a di-nuclear system in the entrance channel which develops an elongated shape and a strong neck. For such reactions we expect an enhanced lifetime of the di-nuclear system which is significantly longer than the time scale for elastic and quasi-elastic reactions. Different theoretical approaches predict delay times of more than 5 × 10−21 s for a subset of our data.
Published: 2010
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22. Minor actinide fission induced by multi-nucleon transfer reaction in inverse kinematics

Author: Enrique Casarejos, B. Jurado, F. Rejmund, M. Caamano, K.-H. Schmidt, G. Barreau, T. Roger, L. Gaudefroy, A. Lemasson, B. Fernández-Domínguez, C. Schmitt, A. Navin, C. Golabek, A. Shrivastava, X. Derkx, C.O. Bacri, J. Benlliure, M. Rejmund, L. Audouin, J. Taieb, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Gesellschaft fur Schwerionenforschung, Darmstadt, Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Universidade de Santiago de Compostela [Spain] (USC ), Oliver Lodge Laboratory, University of Liverpool, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), L. Bonneau, N. Dubray, F. Gunsing, B. Jurado, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Cold fission, 010308 nuclear & particles physics, Chemistry, Fission, Physics, QC1-999, Nuclear Theory, Radioactive waste, Minor actinide, Fission product yield, Actinide, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Fast fission, Nuclear physics, 0103 physical sciences, 010306 general physics, Long-lived fission product, Nuclear Experiment
Abstract: Expérience GANIL; International audience; In the framework of nuclear waste incineration and design of new generation nuclear reactors, experimental data on fission probabilities and on fission fragment yields of minor actinides are crucial to design prototypes. Transfer-induced fission has proven to be an efficient method to study fission probabilities of actinides which cannot be investigated with standard techniques due to their high radioactivity. We report on the preliminary results of an experiment performed at GANIL that investigates fission probabilities with multi-nucleon transfer reactions in inverse kinematics between a 238U beam on a 12C target. Actinides from U to Cm were produced with an excitation energy range from 0 to 30 MeV. In addition, inverse kinematics allowed to characterize the fission fragments in mass and charge. A key point of the analysis resides in the identification of the actinides produced in the different transfer channels. The new annular telescope SPIDER was used to tag the target-like recoil nucleus of the transfer reaction and to determine the excitation energy of the actinide. The fission probability for each transfer channel is accessible and the preliminary results for 238U are promising.
Published: 2009
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23. Study of heavy di-nuclear systems

Author: Dieter Ackermann, W. Mittig, V. F. Comas, J. A. Heredia, S. Heinz, Jadambaa Khuyagbaatar, S. Hofmann, Antonio Villari, C. Golabek, F. P. Heßberger, R. Mann, Bettina Lommel, Birgit Kindler, F. Rejmund, Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, SHELL model, Dissipation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon, Beam (structure)
Abstract: We investigated di-nuclear system formation with successive nucleon transfer at beam energies at and below the barrier in the superheavy systems 64 28 Ni + 207 82 Pb ( Z p r o j . + Z t a r g e t = 110 ) and 238 92 U + 238 92 U ( Z p r o j . + Z t a r g e t = 184 ). In both collision systems we observed a massive transfer of nucleons correlated with the dissipation of the entire kinetic energy. The results are in accordance with the two-center shell model which assumes the formation of a di-nuclear system as first step to fusion. The experiments have been performed at the velocity filter SHIP (GSI) and at the VAMOS spectrometer (GANIL).
Published: 2009
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24. Spectroscopy ofSc52,53

Author: Gaurab Mukherjee, A. Navin, A. Hodsdon, David O'Donnell, Frédéric Nowacki, S. Bhattacharyya, R. Chapman, P. Roussel-Chomaz, M. Gelin, M. Rousseau, X. Liang, Alfredo Poves, F. Rejmund, E. Caurier, Ch. Theisen, K. M. Spohr, M. Rejmund, and W. Mittig
Subjects: Physics, Nuclear and High Energy Physics, Valence (chemistry), Proton, Spectrometer, 010308 nuclear & particles physics, Yrast, Nuclear Theory, Deep inelastic scattering, 01 natural sciences, Excited state, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy
Abstract: Excited states of neutron-rich odd-A and odd-odd Sc isotopes, populated in deep inelastic multinucleon transfer reactions, induced by a {sup 238}U beam on a thin {sup 48}Ca target, have been identified. A strong feeding of both yrast and nonyrast states in such a reaction is illustrated using a combination of a large efficiency spectrometer and a {gamma} detector array. The structure of the populated states is interpreted in terms of the role of the valence proton and neutrons and compared to shell model calculations in the full pf shell.
Published: 2009
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25. Prompt gamma-ray spectroscopy of isotopically identified fission fragments

Author: F. Rejmund, J. Benlliure, G. Barreau, Enrique Casarejos, C.O. Bacri, B. Fernández-Domínguez, Kamila Sieja, L. Gaudefroy, A. Navin, C. Schmitt, A. Shrivastava, A. Lemasson, C. Golabek, X. Derkx, T. Roger, M. Rejmund, J. Taieb, B. Jurado, M. Caamano, L. Audouin, Karl-Heinz Schmidt, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut für Kernphysik, Technische Universität Darmstadt (TU Darmstadt), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), USC, Universidad de Santiago de Compostela, Universidad Santiago de Compostela, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Universidade de Santiago de Compostela [Spain] (USC )
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, Fission, 25.70.Jj, 23.20.Lv, 21.60.Cs, 27.60.+j, Gamma ray, Analytical chemistry, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Uranium-238, 0103 physical sciences, Neutron, Gamma spectroscopy, 010306 general physics, Spectroscopy, Spin (physics), Nuclear Experiment
Abstract: Measurements of prompt Doppler-corrected deexcitation gamma rays from uniquely identified fragments formed in fusion-fission reactions of the type 12C(238U,134Xe)Ru are reported. The fragments were identified in both A and Z using the variable-mode, high-acceptance magnetic spectrometer VAMOS. States built on the characteristic neutron configurations forming high-spin isomers (7- and 10+) in 134Xe are presented and compared with the predictions of shell-model calculations using a new effective interaction in the region of Z>=50 and N
Published: 2009
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26. Probing the maximally deformed light rare-earth region around the drip-line nucleus 130Sm

Author: M Petri, E S Paul, P J Nolan, A J Boston, R J Cooper, M R Dimmock, S Gros, B M McGuirk, H C Scraggs, G Turk, B Rossé, M Meyer, N Redon, Ch Schmitt, O Stézowski, D Guinet, Ph Lautesse, G De France, S Bhattachasyya, G Mukherjee, F Rejmund, M Rejmund, H Savajols, J N Scheurer, A Astier, I Deloncle, A Prévost, B M Nyakó, J Gál, J Molnár, J Timár, L Zolnai, K Juhász, V F E Pucknell, R Wadsworth, P Joshi, G La Rana, R Moro, M Trotta, E Vardaci, G Hackman, G Ball, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), EXOGAM, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), M., Petri, E. S., Paul, P. J., Nolan, A. J., Boston, R. J., Cooper, M. R., Dimmock, S., Gro, B. M., Mcguirk, H. C., Scragg, G., Turk, B., Rosse, M., Meyer, N., Redon, Schmitt, C. h., O., Stezowski, D., Guinet, Lautesse, P. h., G., De France, S., Bhattacharyya, G., Mukherjee, F., Rejmund, M., Rejmund, H., Savajol, J. N., Scheurer, A., Astier, I., Deloncle, A., Prevost, B. M., Nyako, J., Gal, J., Molnar, J., Timar, L., Zolnai, K., Juhasz, V. F. E., Pucknell, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, and G., Ball
Subjects: radioactive ion beam, Proton, Nuclear Theory, 27.60.+j, 21.10.Re, 23.20.Lv, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Cerium Isotopes, Nuclear physics, ground-state deformation, 0103 physical sciences, medicine, Neutron, Nuclear Experiment, 010306 general physics, Spin (physics), Mathematical Physics, Line (formation), Physics, Spectrometer, 010308 nuclear & particles physics, neutron deficient rare-earth nuclei, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, medicine.anatomical_structure, Physics::Accelerator Physics, Atomic physics, charged particle spectrometer, Nucleus, Beam (structure)
Abstract: The neutron deficient rare-earth nuclei of the A similar to 130 region are of particular interest since highly deformed prolate ground states are expected. Indeed these nuclei are predicted to show maximal ground-state deformations of beta(2) similar to 0.40 (axis ratio of 3:2), comparable to the deformation deduced for superdeformed cerium isotopes at high spin. A fusion-evaporation experiment was performed with radioactive ion beams at GANIL in October 2004 which had the goal to reach very proton-rich exotic nuclei located near the proton drip-line. A radioactive Kr-76 beam, delivered by the SPIRAL facility, was used to bombard a thin Ni-58 target. Emitted gamma-rays were detected by the EXOGAM gamma-ray spectrometer which was, for the first time, coupled with both the DIAMANT charged-particle array and the VAMOS spectrometer.
Published: 2006
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27. Production of medium-mass neutron-rich nuclei in reactions induced byXe136projectiles at 1AGeV on a beryllium target

Author: F. Rejmund, J. Pereira, O. Yordanov, C. Villagrasa, T. Enqvist, Daniela Henzlova, C. Schmitt, Enrique Casarejos, Andreas Martin Heinz, K.-H. Schmidt, A. Kelic, Alain Boudard, L. Tassan-Got, C. Stéphan, C. Volant, P. Napolitani, L. Audouin, J.E. Ducret, J. Benlliure, S. Leray, M. V. Ricciardi, M. Fernandez-Ordoñez, and V. Henzl
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Nuclear Theory, chemistry.chemical_element, Fission product yield, 01 natural sciences, Nuclear physics, Uranium-238, chemistry, Fragmentation (mass spectrometry), 0103 physical sciences, r-process, Neutron, Nuclide, Beryllium, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: Production cross sections of medium-mass neutron-rich nuclei obtained in the fragmentation of $^{136}\mathrm{Xe}$ projectiles at 1 $A$ GeV have been measured with the FRagment Separator (FRS) at GSI. The measured cross sections are compared to $^{238}\mathrm{U}$ fission yields and model calculations to determine the optimum reaction mechanism to extend the limits of the chart of the nuclides around the r-process waiting point at $N=82$.
Published: 2008
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28. Recent progress in measuring β half-lives of nuclei approaching the r-process waiting point A = 195

Author: F. Rejmund, O. Yordanov, Karlheinz Langanke, K.-H. Schmidt, T. Kurtukian-Nieto, B. Blank, Gabriel Martínez-Pinedo, F. Becker, M. Fernandez-Ordoñez, J. Benlliure, J. Giovinazzo, Enrique Casarejos, L. Audouin, J. Pereira, Ivan Borzov, B. Jurado, Daniela Henzlova, Universidade de Santiago de Compostela [Spain] (USC ), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut für Kernphysik, Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), USC, Universidad de Santiago de Compostela, Universidad Santiago de Compostela, Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Technische Universität Darmstadt (TU Darmstadt), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Double beta decay, 0103 physical sciences, r-process, Nuclide, 010306 general physics, Nuclear Experiment
Abstract: Heavy neutron-rich nuclei close to N = 126 were produced by fragmentation of a 1 A GeV 208 Pb beam at the FRS at GSI. The β-decay half-lives of 8 nuclides have been determined using a novel numerical analysis method. The comparison of the data with model calculations provides indications on the importance of first-forbidden transitions around A = 195 . The measured data indicate that the matter flow in the r-process to heavier fissioning nuclei may be faster than previously expected.
Published: 2008
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29. Experimental investigation of the residues produced in the136Xe+Pband124Xe+Pbfragmentation reactions at1AGeV

Author: Arnd R. Junghans, A. Boudard, Enrique Casarejos, B. Jurado, M. F. Ordonez, L. Audouin, F. Rejmund, O. Yordanov, D. Henzlova, A. Krasa, R. Pleskac, Andreas Wagner, J. Benlliure, J. Pereira, J.-E. Ducret, A. Kelic, L. Tassan-Got, C. Stephan, Ch. Schmitt, P. Napolitani, M. V. Ricciardi, C. Volant, S. Leray, T. Enqvist, V. Henzl, Andreas Martin Heinz, T. Kurtukian, K.-H. Schmidt, and C. Villagrasa
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Isotope, Spectrometer, 010308 nuclear & particles physics, Stable isotope ratio, Charge density, 01 natural sciences, 7. Clean energy, Nuclear physics, Fragmentation (mass spectrometry), 0103 physical sciences, Isotopes of xenon, Nuclide, 010306 general physics
Abstract: The nuclide cross sections and longitudinal velocity distributions of residues produced in the reactions of {sup 136}Xe and {sup 124}Xe at 1A GeV in a lead target were measured at the high-resolution magnetic spectrometer, the fragment separator (FRS) of GSI. The data cover a broad range of isotopes of the elements between Z=3 and Z=56 for {sup 136}Xe and between Z=5 and Z=55 for {sup 124}Xe, reaching down to cross sections of a few microbarns. The velocity distributions exhibit a Gaussian shape for masses above A=20, while more complex behavior is observed for lighter masses. The isotopic distributions for both reactions preserve a memory on the projectile N/Z ratio over the whole residue mass range.
Published: 2008
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30. Experimental study of resonance states inH7andH6

Author: B. Fernandez, A. Obertelli, P. Roussel-Chomaz, M. B. Gomez Hornillos, M. Caamaño, M. Rejmund, O. Kiselev, Beatriz Jurado, H. Savajols, R. Wolski, C. E. Demonchy, Roy Crawford Lemmon, F. Rejmund, Marielle Chartier, A. Gillibert, D. Cortina-Gil, and W. Mittig
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Nuclear structure, Resonance, Atomic physics, Nuclear Experiment, 010306 general physics, Nuclear matter, 01 natural sciences, 7. Clean energy
Abstract: The $^{7}\mathrm{H}$ and $^{6}\mathrm{H}$ nuclear systems were investigated via transfer reactions with a $^{8}\mathrm{He}$ beam at $15.4A$ MeV impinging in a $^{12}\mathrm{C}$ target. The experimental setup allowed a complete reconstruction of the reaction kinematics with the MAYA gas detector, based on the active-target concept, where the carbon atoms of the filling isobutane played also the role of reaction target. The $^{7}\mathrm{H}$ resonance was observed at $0.{57}_{\ensuremath{-}0.21}^{+0.42}$ MeV above the ${}^{3}\mathrm{H}+4n$ threshold with a width of $0.{09}_{\ensuremath{-}0.06}^{+0.94}$ MeV. The $^{6}\mathrm{H}$ system was formed at $2.{91}_{\ensuremath{-}0.95}^{+0.85}$ MeV with a resonance width of $1.{52}_{\ensuremath{-}0.35}^{+1.77}$ MeV. These results show the availability of nuclear structure information well outside the bounding limits, resulting in an extraordinary input to improve the present models and understanding of nuclear matter.
Published: 2008
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31. Production cross-sections of neutron-rich Pb and Bi isotopes in the fragmentation of 238U

Author: Enrique Casarejos, K.-H. Schmidt, B. Jurado, F. Rejmund, D. Cortina-Gil, J. Benlliure, J. Pereira, O. Yordanov, B. Fernández, P. Napolitani, H. Alvarez-Pol, T. Enqvist, Arnd R. Junghans, L. Audouin, Universidade de Santiago de Compostela [Spain] (USC ), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), University of Washington [Seattle], Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), USC, Universidad de Santiago de Compostela, Universidad Santiago de Compostela, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Hadron, chemistry.chemical_element, 25.70.Mn, 27.80.+w, 27.90.+b, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Bismuth, Nuclear physics, chemistry, Fragmentation (mass spectrometry), Projectile and target fragmentation, 0103 physical sciences, Nuclear fusion, Neutron, Beryllium, 010306 general physics
Abstract: International audience; Neutron-rich lead and bismuth isotopes have been produced by cold-fragmentation reactions induced by 238U projectiles at 1AGeV impinging on a beryllium target. The high-resolving power FRagment Separator (FRS) at GSI allowed us to identify and determine the production cross-sections of 43 nuclei, nine of them for the first time (216,217,218,219Pb and 219,220,221,222,223Bi). These data are compared to other previously measured cross-sections in similar reactions and model calculations.
Published: 2008
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32. Search for a Long Living Giant System in $^{238}$U+$^{238}$U Collisions near the Coulomb Barrier

Author: C. GOLABEK, A. C. C. VILLARI, S. HEINZ, W. MITTIG, S. BHATTACHARYYA, D. BOILLEY, G. DE FRANCE, A. DROUART, L. GAUDEFROY, L. GIOT, A. MARCHIX, V. MASLOV, M. MORJEAN, G. MUKHERJEE, A. NAVIN, YU. PENIONZKEVICH, F. REJMUND, M. REJMUND, P. ROUSSEL-CHOMAZ, C. STODEL, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), VEC Center I, VEC Center, Université de Caen Normandie (UNICAEN), Normandie Université (NU), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Flerov Laboratory of Nuclear Reactions [Dubna] (FLNR), Joint Institute for Nuclear Research (JINR), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Excitation function, Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, General Physics and Astronomy, Coulomb barrier, Kinematics, Dissipation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, 7. Clean energy, Nuclear physics, Cardinal point, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment
Abstract: We searched for a long-living component in the collision of 238U+238U between 6.09 A and 7.35 A MeV. The experiment was performed at GANIL using the spectrometer VAMOS, tuned for observing reactions with kinematics similar to quasi-fission events. Theoretical calculations indicate that reactions with strong energy dissipation and a large number of transferred nucleons are correlated to a time delay in the decay of the giant system. We detected events of such type in the focal plane of VAMOS. These events present an excitation function increasing with bombarding energy.
Published: 2008
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33. Coincidence Measurement of Residues and Light Particles in the ReactionFe56+pat 1 GeV per Nucleon with the Spallation Reactions Setup SPALADIN

Author: C. Schwarz, S. Leray, W. Trautmann, F. Rejmund, S. Pietri, Piotr Pawłowski, L. Donadille, A. Lafriakh, U. Lynen, J. Benlliure, M. Böhmer, Herbert A. Simon, C.O. Bacri, O. Yordanov, Roman Gernhäuser, J.E. Ducret, K. Kezzar, S. Bianchin, A. Boudard, F. Lavaud, T. Kurtukian-Nieto, E. Le Gentil, J. Brzychczyk, J. Lukasik, W. F. J. Müller, E. Casarejos, Michel Combet, M. Fernandez-Ordoñez, J. Luhning, Håkan T Johansson, C. Sfienti, A. Le Fèvre, Thomas Aumann, and C. Volant
Subjects: Nuclear reaction, Physics, Angular momentum, Photon, 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, Kinetic energy, 01 natural sciences, Nuclear physics, Cascade, 0103 physical sciences, Spallation, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Excitation
Abstract: The spallation of Fe-56 in collisions with hydrogen at 1A GeV has been studied in inverse kinematics with the large-aperture setup SPALADIN at GSI. Coincidences of residues with low-center-of-mass kinetic energy light particles and fragments have been measured allowing the decomposition of the total reaction cross section into the different possible deexcitation channels. Detailed information on the evolution of these deexcitation channels with excitation energy has also been obtained. The comparison of the data with predictions of several deexcitation models coupled to the INCL4 intranuclear cascade model shows that only GEMINI can reasonably account for the bulk of collected results, indicating that in a light system with no compression and little angular momentum, multifragmentation might not be necessary to explain the data.
Published: 2008
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34. Structure of neutron-rich Ar isotopes beyond N=28

Author: E. Caurier, S. Bhattacharyya, A. Hodsdon, M. Rejmund, Gaurab Mukherjee, A. Navin, P. Roussel-Chomaz, Frédéric Nowacki, M. Gelin, X. Liang, Ch. Theisen, K. M. Spohr, M. Rousseau, R. Chapman, F. Rejmund, Alfredo Poves, David O'Donnell, W. Mittig, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Departamento de Fisica Teoretica and IFT/CSIC, Universidad Autónoma de Madrid (UAM), School of Engineering and Science, University of the West of Scotland (UWS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Universidad Autonoma de Madrid (UAM)
Subjects: Physics, 21.60.Cs, 23.20.Lv, 27.40.+z, 25.70.Lm, Isotope, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, SHELL model, Nuclear Theory, Structure (category theory), General Physics and Astronomy, Coulomb barrier, Deformation (meteorology), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Spectroscopy
Abstract: Détecteur VAMOS, détecteur EXOGAM; Results from the gamma spectroscopy of $^{47,48}$Ar exemplifying new limits of sensitivity for characterizing neutron-rich nuclei at energies around the Coulomb barrier are presented. The present results along with interacting shell model calculations, highlight the role of cross shell excitations and indicate the presence of a non axial deformation in $^{48}$Ar.
Published: 2008
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35. Measurement of the complete nuclide production and kinetic energies of the systemXe136+hydrogen at 1 GeV per nucleon

Author: Andreas Martin Heinz, A. Lafriaskh, L. Audouin, M. Fernández Ordóñez, B. Fernandez, C. Villagrasa, C. Stephan, J. Benlliure, P. Napolitani, K.-H. Schmidt, T. Enqvist, J. Pereira, Daniela Henzlova, O. Yordanov, C. Schmitt, M. Bernas, R. Pleskac, E. Casarejos, P. Armbruster, A. Boudard, A. Kelic, V. Henzl, L. Tassan-Got, F. Rejmund, M. V. Ricciardi, C. Volant, and S. Leray
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Nuclear Theory, Kinetic energy, 7. Clean energy, 01 natural sciences, Nuclear physics, Stable nuclide, 0103 physical sciences, Mass spectrum, Spallation, Neutron, Nuclide, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: We present an extensive overview of production cross sections and kinetic energies for the complete set of nuclides formed in the spallation of {sup 136}Xe by protons at the incident energy of 1 GeV per nucleon. The measurement was performed in inverse kinematics at the GSI fragment separator. Slightly below the Businaro-Gallone point, {sup 136}Xe is the stable nuclide with the largest neutron excess. The kinematic data and cross sections collected in this work for the full nuclide production are a general benchmark for modeling the spallation process in a neutron-rich nuclear system, where fission is characterized by predominantly mass-asymmetric splits.
Published: 2007
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36. Resonance State inH7

Author: B. Fernandez, M. Caamaño, A. Gillibert, P. Roussel-Chomaz, R. Wolski, M. Rejmund, D. Cortina-Gil, W. Mittig, H. Savajols, C. E. Demonchy, O. Kiselev, Beatriz Jurado, Roy Crawford Lemmon, M. B. Gomez Hornillos, Marielle Chartier, F. Rejmund, and A. Obertelli
Subjects: Physics, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Resonance, State (functional analysis), Atomic physics, Nuclear Experiment, 010306 general physics, Nuclear system, 01 natural sciences, Energy (signal processing)
Abstract: The existence of the $^{7}\mathrm{H}$ nuclear system was investigated via a one-proton transfer reaction with a $^{8}\mathrm{He}$ beam at $15.4\mathrm{A}\text{ }\text{ }\mathrm{MeV}$ and a $^{12}\mathrm{C}$ gas target. The experimental setup was based on the active-target MAYA which allowed a complete reconstruction of the reaction kinematics. The existence of the $^{7}\mathrm{H}$ was confirmed with the identification of seven events where the system was formed with a resonance energy of ${0.57}_{\ensuremath{-}0.21}^{+0.42}\text{ }\text{ }\mathrm{MeV}$ above the $^{3}\mathrm{H}+4n$ threshold and a resonance width of ${0.09}_{\ensuremath{-}0.06}^{+0.94}\text{ }\text{ }\mathrm{MeV}$. This study represents an unambiguous proof of the existence of the most neutron-proton unbalanced system presently found.
Published: 2007
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37. Isotopic production cross sections and recoil velocities of spallation-fission fragments in the reactionU238(1AGeV)+d

Author: F. Rejmund, K.-H. Schmidt, C. Stephan, M. Bernas, M.S. Pravikoff, E. Casarejos, J. Benlliure, P. Armbruster, A. Boudard, R. Legrain, W. Wlazlo, L. Tassan-Got, J. Pereira, T. Enqvist, S. Czajkowski, J. Taieb, S. Leray, B. Mustapha, and C. Volant
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, 01 natural sciences, 7. Clean energy, Nuclear physics, Uranium-238, Recoil, Deuterium, 0103 physical sciences, Spallation, 010306 general physics, Data reduction
Abstract: Fission fragments of 1A GeV{sup 238}U nuclei interacting with a deuterium target have been investigated with the Fragment Separator (FRS) at Gesellschaft fuer Schwerionenforschung (GSI) by measuring their isotopic production cross sections and velocities. Results, along with those obtained recently for spallation-evaporation fragments, provide a comprehensive analysis of the spallation nuclear productions in this reaction. Details about the experimental performance, data reduction and results are presented.
Published: 2007
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38. Search for a long lived component in the reaction U+U near the Coulomb barrier

Author: A. C. C. Villari, C. Golabek, W. Mittig, S. Heinz, S. Bhattacharyya, D. Boilley, R. Dayras, G. De France, A. Drouart, L. Gaudefroy, L. Giot, A. Marchix, V. Maslov, M. Morjean, G. Mukherjee, A. Navin, Yu. Penionzkevich, F. Rejmund, M. Rejmund, P. Roussel-Chomaz, C. Stodel, M. Winkler, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Université de Caen Normandie (UNICAEN), Normandie Université (NU), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Arnould M., Lewitowicz M., Emling H., Akimune H., Ohta M., Utsunomiya H., Wada T., Yamagata T., VAMOS, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Excitation function, 25.85.-w, 25.90+k, Spectrometer, 010308 nuclear & particles physics, Fission, Component (thermodynamics), Chemistry, Coulomb barrier, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, 7. Clean energy, Nuclear physics, giant system, Cardinal point, 0103 physical sciences, fission, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: Expérience GANIL; International audience; We performed an experiment to search for a signature of a long living component in the collision of $^{238}$U + $^{238}$U between 6.09 and 7.35A MeV. The experiment was performed at GANIL using the spectrometer VAMOS, tuned for observing reactions with kinematics similar to fusion-fission events. Theoretical calculations indicate that if a long living component would exist for this reaction, the most probable fission channel of such a giant system would be via the emissionof quasi-lead nuclei. We detected events of such a category in the focal plane of VAMOS. These events present an excitation function growing as a function of the bombarding energy.
Published: 2007
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39. Shell evolution and the N=34 'magic number'

Author: A. Navin, M. Gelin, W. Mittig, L. Gaudefroy, P. Roussel-Chomaz, M. Rejmund, Gaurab Mukherjee, Ch. Theisen, S. Bhattacharyya, F. Rejmund, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Shell (structure), Nuclear structure, Coulomb barrier, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Uranium-238, 0103 physical sciences, 21.60.Cs, 25.70.Lm, 23.20.Lv, 27.40.+z, Neutron, Atomic physics, 010306 general physics, Nuclear Experiment, Energy (signal processing), Magic number (physics)
Abstract: Measurements of de-excitation \ensuremath{\gamma} rays in coincidence with target-like residues produced in deep inelastic transfer reactions of $^{238}\mathrm{U}$ on a $^{48}\mathrm{Ca}$ target at an energy near the Coulomb barrier are presented. A systematic analysis, within a shell model approach, of the measured low-lying states in the odd and even neutron-rich Ca isotopes points toward a possible absence of a predicted shell closure at $N=34$.
Published: 2007
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40. γ spectroscopy ofNe25,27andNa26,27

Author: A. Obertelli, A. Gillibert, N. Alamanos, M. A. G. Alvarez, F. Auger, R. Dayras, A. Drouart, N. Keeley, V. Lapoux, X. Mougeot, L. Nalpas, E. Pollacco, F. Skaza, Ch. Theisen, G. de France, B. Jurado, W. Mittig, F. Rejmund, M. Rejmund, P. Roussel-Chomaz, H. Savajols, A. Pakou, and N. Patronis
Subjects: Physics, Nuclear and High Energy Physics, Inverse kinematics, 010308 nuclear & particles physics, Nuclear Theory, Space (mathematics), 01 natural sciences, 3. Good health, Deuterium, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Selectivity, Spectroscopy, Astrophysics::Galaxy Astrophysics
Abstract: The $\gamma$ spectroscopy of $^{25,27}$Ne and $^{26,27}$Na was studied from the reaction of $^{26}$Ne with a deuterium target in inverse kinematics at 9.7 MeV/nucleon. The selectivity of the (d,p),(d,t), and (d,n) transfer reactions provides new spectroscopic information on low-lying states. The validity of the sd shell-model space for these nuclei is discussed.
Published: 2006
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41. Isotopic production cross sections of spallation-evaporation residues from reactions ofU238(1AGeV) with deuterium

Author: B. Mustapha, C. Volant, S. Czajkowski, M. Bernas, C. Stephan, W. Wlazlo, F. Rejmund, R. Legrain, J. Benlliure, J. Taieb, S. Leray, Enrique Casarejos, J. Pereira, T. Enqvist, P. Armbruster, K.-H. Schmidt, A. Boudard, L. Tassan-Got, and M.S. Pravikoff
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Nuclear Theory, Evaporation, 01 natural sciences, Momentum, Nuclear physics, Uranium-238, Deuterium, 0103 physical sciences, Neutron source, Production (computer science), Spallation, Nuclear Experiment, 010306 general physics
Abstract: Isotopic production cross sections and momentum distributions of 602 residual nuclei produced in the collision of $^{238}\mathrm{U}$($1A$ GeV) with deuterium have been measured. These data are relevant for a better understanding of spallation reactions for use as neutron sources for accelerator-driven systems or to produce radioactive nuclear beams. Access to primary residue production makes it possible to study the main reaction mechanisms involved: intranuclear cascade, particle evaporation, and fission. The characteristics of the reaction investigated and the high fissility of the $^{238}\mathrm{U}$ and the dinucleon projectile system are discussed and compared with other available experimental data.
Published: 2006
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42. Structure of exotic nuclei from direct reactions

Author: A. Gillibert, N. Alamanos, M. Alvarez, F. Auger, D. Beaumel, E. Becheva, Y. Blumenfeld, R. Dayras, F. Delaunay, A. Drouart, G. de France, L. Giot, B. Jurado, N. Keeley, K.W. Kemper, V. Lapoux, W. Mittig, X. Mougeot, L. Nalpas, A. Obertelli, N. Patronis, A. Pakou, E.C. Pollacco, R. Raabe, P. Roussel-Chomaz, F. Rejmund, M. Rejmund, H. Savajols, J.A. Scarpaci, J.L. Sida, F. Skaza, S. Stepantsov, Ch. Theisen, R. Wolski, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Bertulani C.A., Gomes P.R.S., Hussein M.S., Szanto de Toledo A., SPIRAL, and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, shell-model, 0103 physical sciences, SHELL model, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 01 natural sciences
Abstract: A. Gillibert, N. Alamanos, M. Alvarez, F. Auger, D. Beaumel, E. Becheva, Y. Blumenfeld, R. Dayras, F. Delaunay, A. Drouart, G. de France, L. Giot, B. Jurado, N. Keeleya∗ , K.W. Kemper, V. Lapoux, W. Mittig, X. Mougeot, L. Nalpas, A. Obertelli, N. Patronis, A. Pakou, E.C. Pollacco, R. Raabe, P. Roussel-Chomaz, F. Rejmund, M. Rejmund, H. Savajols, J.A. Scarpaci , J.L. Sida, F. Skaza, S. Stepantsov , Ch. Theisen and R. Wolski DAPNIA/SPhN, CE Saclay, 91191 Gif-sur-Yvette, France Institut de Physique Nucleaire, 91406 Orsay ,France GANIL, BP 5027, 14021 Caen Cedex, France Department of Physics, Florida State University, Florida 32306-4350 USA University of Ioannina, 45110 Ioannina, Greece JINR,FLNR 141980 Dubna, Russia The Henryk Niewodniczanski Institute of Nuclear Physics, Krakow, Poland
Published: 2006
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43. Production of heavy neutron-rich nuclei 'south' of lead

Author: J. Giovinazzo, Daniela Henzlova, F. Becker, J. Benlliure, L. Audouin, F. Rejmund, B. Jurado, D. Cortina, Enrique Casarejos, J. Pereira, K.-H. Schmidt, B. Blank, M. Fernandez-Ordoñez, O. Yordanov, T. Kurtukian-Nieto, Department of Particle Physics, Universidade de Santiago de Compostela [Spain] (USC ), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, 010308 nuclear & particles physics, Projectile, Nuclear Theory, 25.70.Mn, 27.70.+q, 27.80.+w, Fragmentation (computing), General Physics and Astronomy, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Nuclear physics, Lead (geology), chemistry, Projectile and target fragmentation, 0103 physical sciences, Production (economics), General Materials Science, Neutron, Physical and Theoretical Chemistry, Beryllium, 010306 general physics, Nuclear Experiment, Radioactive beam
Abstract: International audience; The production of heavy neutron-rich nuclei is investigated using cold-fragmentation reactions. More than 25 new heavy neutron-rich nuclei were produced in the fragmentation of 208Pb projectiles at 1 A GeV impinging a beryllium target. The precise measurement of their production cross sections enables to benchmark the predictive power of different model calculations and make reliable predictions of the production rates expected in future radioactive beam facilities.
Published: 2006
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44. Study of N = 16 for Ne isotopes

Author: A. Gillibert, A. Obertelli, N. Alamanos, M. Alvarez, F. Auger, R. Dayras, A. Drouart, G. de France, B. Jurado, N. Keeley, V. Lapoux, W. Mittig, X. Mougeot, L. Nalpas, A. Pakou, N. Patronis, E. Pollacco, F. Rejmund, M. Rejmund, P. Roussel-Chomaz, H. Savajols, F. Skaza, Ch. Theisen, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Department of Physics [Ioannina), University of Ioannina, SPIRAL, VAMOS, and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Isotope, 21.10.-k, 21.10.Pc, 25.45.-z, 27.30.+t, 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, Parity (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 3. Good health, 0103 physical sciences, General Materials Science, Neutron, Physical and Theoretical Chemistry, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: 27Ne has been investigated through the one neutron transfer reaction 26Ne(d,p)27Ne in inverse kinematics at 9.7 MeV/nucleon. The results support the existence of a low lying negative parity state in 27Ne which is a signature of a reduced sd-fp shell gap in the N = 16 neutron rich region, at variance with stable nuclei.
Published: 2006
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45. Light nuclides produced in the proton-induced spallation ofU238at 1 GeV

Author: C. Stephan, A. Kelic, L. Tassan-Got, M. Bernas, S. Leray, M. V. Ricciardi, T. Enqvist, P. Armbruster, B. Mustapha, S. Czajkowski, J. Benlliure, K.-H. Schmidt, O. Yordanov, C. Volant, A. Boudard, J. Pereira, F. Rejmund, and R. Legrain
Subjects: Physics, Nuclear and High Energy Physics, Isotope, Proton, 010308 nuclear & particles physics, Nuclear Theory, 7. Clean energy, 01 natural sciences, Beta-decay stable isobars, Nuclear physics, Uranium-238, 0103 physical sciences, Production (computer science), Spallation, Nuclide, Nuclear Experiment, 010306 general physics, Radioactive decay
Abstract: The production of light and intermediate-mass nuclides formed in the reaction $^{1}\mathrm{H}+^{238}\mathrm{U}$ at 1 GeV was measured at the Fragment Separator at GSI, Darmstadt. The experiment was performed in inverse kinematics, by shooting a 1 A GeV $^{238}\mathrm{U}$ beam on a thin liquid-hydrogen target. A total of 254 isotopes of all elements in the range $7\ensuremath{\le}Z\ensuremath{\le}37$ were unambiguously identified, and the velocity distributions of the produced nuclides were determined with high precision. The results show that the nuclides are produced in a very asymmetric binary decay of heavy nuclei originating from the spallation of uranium. All the features of the produced nuclides merge with the characteristics of the fission products as their mass increases.
Published: 2006
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46. Production cross sections of N simeq Z nuclei in the region around A simeq 80

Author: D. Cortina-Gil, B. Fernández-Domínguez, S.K. Mandal, Hans Geissel, F. Rejmund, B. Blank, Roy Crawford Lemmon, Marielle Chartier, K. Sümmerer, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Fragmentation (mass spectrometry), 0103 physical sciences, 010306 general physics, Nuclear Experiment, Projectile fragmentation
Abstract: International audience; The projectile fragmentation of 92Mo at Elab = 500 A MeV has been studied at the European large-scale facility SIS/FRS at GSI, Darmstadt, Germany. The produced isotopes have been identified in Z and A numbers by using the Brho–ΔE–TOF method. The results of the isotopic production cross sections will be presented. The data will be used to test the predictive power of the empirical parametrizations (EPAX) and fragmentation models (ABRABLA) to determine production cross sections. The measured data provide a precise knowledge of the expected production rates of secondary beams of N simeq Z nuclei via projectile fragmentation.
Published: 2005
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47. Measurement of residual nucleus cross sections and recoil energies in p + Fe collisions at 300, 500, 750, 1000 and 1500 MeV

Author: Enrique Casarejos, K. Sümmerer, J. Pereira, O. Yordanov, F. Vivès, F. Rejmund, J. J. Connel, K.-H. Schmidt, D. Karamanis, T. Enqvist, M.S. Pravikoff, K. Helariutta, C. Villagrasa, C. Volant, J.E. Ducret, L. Tassan-Got, W. Wlazlo, F. Hammache, Mark E. Wiedenbeck, M. Fernandez, Arnd R. Junghans, J. Benlliure, B. Jurado, A. Boudard, S. Leray, J. S. George, M. V. Ricciardi, N. Yanazak, S. Czajkowski, L. Audouin, C. Stephan, L. Ferran, R. A. Mewaldt, B. Fernandez, A. M. Heinz, P. Armbruster, Thomas Faestermann, Haight, R. C., Chadwick, M. B., Kawano, T., Talou, P., Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Isotope, 010308 nuclear & particles physics, 25.40.Sc, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Residual, 7. Clean energy, 01 natural sciences, Nuclear physics, Recoil, medicine.anatomical_structure, 0103 physical sciences, medicine, Spallation, Iron Isotopes, Atomic physics, 010303 astronomy & astrophysics, Nucleus
Abstract: PACS; International audience; The production of residual nuclei in p + Fe collisions has been measured at GSI on the FRS facility by means of the reverse kinematic techniques at 300, 500, 750, 1000 and 1500 MeV/A. The cross-sections larger than 0.01 mb of all isotopes with Z larger than 8 have been obtained. Velocity distributions were also measured. Comparisons to models describing spallation reactions and some empirical formulae often used in astrophysics are presented. These data are directly used to calculate impurety production and DPAs in a thin window as foreseen in spallation sources or accelerator-driven systems
Published: 2005
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48. Production and half-lives on neutron-rich isotopes near N=126

Author: O. Yordanov, F. Becker, J. Giovinazzo, D. Henzlova, Enrique Casarejos, K.-H. Schmidt, J. Pereira, B. Blank, J. Benlliure, L. Audouin, M. Fernandez-Ordoñez, B. Jurado, D. Cortina-Gil, T. Kurtukian-Nieto, F. Rejmund, Z. Gacsi, Z. Dombradi, A. Krasznahorkay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Isotope, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Radiochemistry, 27.80.+w, 25.70.Mn, 23.40.-s, 21.10.Gv, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Beta decay, Nuclear physics, chemistry, Fragmentation (mass spectrometry), Double beta decay, 0103 physical sciences, r-process, Neutron, Beryllium, Nuclear Experiment, 010306 general physics, Open shell
Abstract: Communication commune avec l'équipe de recherche ACEN du CENBG; International audience; Heavy neutron-rich nuclei close to the neutron closed shell N = 126 were produced by fragmentation of a 1 A GeV 208Pb beam in a beryllium target at the Fragment Separator at GSI. Around 30 heavy neutron-rich isotopes have been synthesized for the first time and the half-lives of some of them have been determined.
Published: 2005
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49. Isomers in neutron-rich A approx 190 nuclides from 208Pb fragmentation

Author: K. Schmidt, Henryk Mach, J. Benlliure, M. Sawicka, C. Wheldon, D. D. Warner, Alison Bruce, M Rejmund, O. Yordanov, Philip M Walker, JG Narro, J. Giovinazzo, DC Gil, F. Vivés, Hans Geissel, C Fox, K. H. Schmidt, W. Gelletly, D. M. Cullen, Paul Stevenson, H. J. Wollersheim, Milena Mineva, Ani Aprahamian, P. H. Regan, W. Korten, Margareta Hellström, F {Rejmund}, J. Döring, F. de Oliveira, H. Grawe, C.D. O'Leary, S. C. Wooding, C. J. Pearson, M. Pfützner, A Kleinbohl, Robert Grzywacz, P. A. Butler, R. Lucas, T. Enqvist, P. Mayet, M. Lewitowicz, Zs. Podolyák, J. Gerl, Ch. Theisen, M. Górska, C Schlegel, H. Schaffner, M. Caamaño, Furong Xu, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Isotope, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Ion, Nuclear physics, Fragmentation (mass spectrometry), Excited state, 0103 physical sciences, Neutron, Nuclide, Atomic physics, 010306 general physics, 21.10.Tg - Lifetimes. 23.20.Lv - γ transitions and level energies. 25.70.Mn - Projectile and target fragmentation
Abstract: Relativistic projectile fragmentation of Pb-208 has been used to produce isomers in neutron-rich, A approximate to 190 nuclides. A forward-focusing spectrometer provided ion-by-ion mass and charge identification. The detection of gamma-rays emitted by stopped ions has led to the assignment of isomers in Ta-188, W-190, Re-192, Re-193, Os-195, Ir-197, Ir-198, Pt-200, Pt-201, Pt-202 and Au-203, with half-lives ranging from approximately 10 ns to 1 ms. Tentative isomer information has been found also for Er-174, Er-175, Hf-185, Re-191, Re-194 and Ir-199. In most cases, time-correlated, singles gamma-ray events provided the first spectroscopic data on excited states for each nuclide. In Pt-200 and Pt-201. the assignments are supported by gamma-gamma coincidences. Isomeric ratios provide additional information, such as half-life and transition energy constraints in particular cases. The level structures of the platinum isotopes are discussed, and comparisons are made with isomer systematics.
Published: 2005
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50. Isotopic and velocity distributions of Bi83 produced in charge-pickup reactions of Pb82208 at 1AGeV

Author: W. Wlazlo, M. Bernas, C. Volant, S. Czajkowski, A. Kelic, R. Legrain, L. Tassan-Got, M.S. Pravikoff, B. Mustapha, A. Boudard, K.-H. Schmidt, T. Enqvist, C. Stephan, F. Rejmund, J. Benlliure, J. Taieb, S. Leray, and P. Armbruster
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Scattering, Charge (physics), Coupling (probability), 7. Clean energy, 01 natural sciences, Delta baryon, Deuterium, 0103 physical sciences, Production (computer science), Atomic physics, Nuclear Experiment, 010306 general physics, Excitation
Abstract: Isotopically resolved cross sections and velocity distributions have been measured in charge-pickup reactions of $1A\phantom{\rule{0.3em}{0ex}}\mathrm{GeV}$ $^{208}\mathrm{Pb}$ with proton, deuterium, and titanium targets. The total and partial charge-pickup cross sections in the reactions $^{208}\mathrm{Pb}+^{1}\mathrm{H}$ and $^{208}\mathrm{Pb}+^{2}\mathrm{H}$ are measured to be the same within the limits of the error bars. A weak increase in the total charge-pickup cross section is seen in the reaction of $^{208}\mathrm{Pb}$ with the titanium target. The measured velocity distributions show different contributions---quasielastic scattering and $\ensuremath{\Delta}$-resonance excitation---to the charge-pickup production. Data on total and partial charge-pickup cross sections from these three reactions are compared with other existing data and also with model calculations based on the coupling of different intranuclear cascade codes and an evaporation code.
Published: 2004
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