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26 results on '"Lanzalone, G."'

1. Investigating γ-ray decay of excited C12 levels with a multifold coincidence analysis

Author

Cardella, G., Favela, F., Martorana, N. S., Acosta, L., Camaiani, A., De Filippo, E., Gelli, N., Geraci, E., Gnoffo, B., Guazzoni, C., Immè, G., Marín-Lámbarri, D. J., Lanzalone, G., Lombardo, I., Lo Monaco, L., Maiolino, C., Nannini, A., Pagano, A., Pagano, E. V., Papa, M., Pirrone, S., Politi, G., Pollacco, E., Quattrocchi, L., Risitano, F., Rizzo, F., Russotto, P., Sicari, V. L., Santonocito, D., Trifirò, A., and Trimarchi, M.

Subjects
Nuclear Structure and Decay, Hoyle State, Nuclear Reactions, Hoyle State, Nuclear Structure and Decay, Nuclear Reactions
Published
2021

2. Analysis of two-nucleon transfer reactions in the $^{20}\mathrm{Ne}+^{116}\mathrm{Cd}$ system at 306 MeV

Author

Carbone, D., Ferreira, J.L., Calabrese, S., Cappuzzello, F., Cavallaro, M., Hacisalihoglu, A., Lenske, H., Lubian, J., Magaña Vsevolodovna, R.I., Santopinto, E., Agodi, C., Acosta, L., Bonanno, D., Borello-Lewin, T., Boztosun, I., Brischetto, G.A., Burrello, S., Calvo, D., Chávez Lomelí, E.R., Ciraldo, I., Colonna, M., Delaunay, F., Deshmukh, N., Finocchiaro, P., Fisichella, M., Foti, A., Gallo, G., Iazzi, F., La Fauci, L., Lanzalone, G., Linares, R., Medina, N.H., Moralles, M., Oliveira, J.R.B., Pakou, A., Pandola, L., Petrascu, H., Pinna, F., Reito, S., Russo, G., Sgouros, O., Solakci, S.O., Soukeras, V., Souliotis, G., Spatafora, A., Torresi, D., Tudisco, S., Yildirin, A., Zagatto, V.A.B., Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-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), and NUMEN

Subjects
Nuclear Theory, Nuclear Reactions, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; Background: Heavy-ion induced two-nucleon transfer reactions are powerful tools to reveal peculiar aspects of the atomic nucleus, such as pairing correlations, single-particle and collective degrees of freedom, and more. Also, these processes are in competition with the direct meson exchange in the double charge exchange reactions, which have recently attracted great interest due to their possible connection to neutrinoless double-β decay. In this framework, the exploration of two-nucleon transfer reactions in the Ne20+Cd116 collision at energies above the Coulomb barrier is particularly relevant since the Cd116 nucleus is a candidate for the double-β decay. Purpose: We want to analyze selected transitions to low-lying 0+ and 2+ states of the residual nuclei in the Cd116(Ne20,Ne22)Cd114 two-neutron pickup and Cd116(Ne20,O18)Sn118 two-proton stripping reactions at 306 MeV incident energy and determine the role of the couplings with inelastic transitions. Methods: We measured the excitation energy spectra and absolute cross sections for the two reactions using the MAGNEX large acceptance magnetic spectrometer to detect the ejectiles. We performed direct coupled reaction channels and sequential distorted wave Born approximation calculations using the double folding São Paulo potential to model the initial and final state interactions. The spectroscopic amplitudes for two- and single-particle transitions were derived by different nuclear structure approaches: microscopic large-scale shell model, interacting boson model-2 and quasiparticle random phase approximation. Results: The calculations are able to reproduce the experimental cross sections for both two-neutron and two-proton transfer reactions. The role of couplings with the inelastic channels are found to be important in the two-proton transfer case. A competition between the direct and the sequential process is found in the reaction mechanism. For the two-proton transfer case, the inclusion of the 1g7/2 and 2d5/2 orbitals in the model space is crucial. Conclusions: The approach presented here, combination of nuclear structure and reaction mechanism ingredients, is a very promising tool for the analysis of two-neutron and two-proton transfer reactions between heavy nuclei.

Published
2020

3. $^{20}\mathrm{Ne}+^{76}\mathrm{Ge}$ elastic and inelastic scattering at 306 MeV

Author

Spatafora, A., Cappuzzello, F., Carbone, D., Cavallaro, M., Lay, J.A., Acosta, L., Agodi, C., Bonanno, D., Bongiovanni, D., Boztosun, I., Brischetto, G.A., Burrello, S., Calabrese, S., Calvo, D., Chávez Lomelí, E.R., Ciraldo, I., Colonna, M., Delaunay, F., Deshmukh, N., Ferreira, J.L., Finocchiaro, P., Fisichella, M., Foti, A., Gallo, G., Hacisalihoglu, A., Iazzi, F., Lanzalone, G., Lenske, H., Linares, R., Lo Presti, D., Lubian, J., Moralles, M., Muoio, A., Oliveira, J.R.B., Pakou, A., Pandola, L., Petrascu, H., Pinna, F., Reito, S., Russo, G., Santagati, G., Sgouros, O., Solakci, S.O., Soukeras, V., Souliotis, G., Torresi, D., Tudisco, S., Yildirim, A., Zagatto, V.A.B., 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), NUMEN, and Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Reactions, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; Background: Double charge exchange (DCE) nuclear reactions have recently attracted much interest as tools to provide experimentally driven information about nuclear matrix elements of interest in the context of neutrinoless double-β decay. In this framework, a good description of the reaction mechanism and a complete knowledge of the initial and final-state interactions are mandatory. Presently, not enough is known about the details of the optical potentials and nuclear response to isospin operators for many of the projectile-target systems proposed for future DCE studies. Among these, the Ne20+Ge76 DCE reaction is particularly relevant due to its connection with Ge76 double-β decay. Purpose: We intend to characterize the initial-state interaction for the Ne20+Ge76 reactions at 306 MeV bombarding energy and determine the optical potential and the role of the couplings between elastic channel and inelastic transitions to the first low-lying excited states. Methods: We determine the experimental elastic and inelastic scattering cross-section angular distributions, compare the theoretical predictions by adopting different models of optical potentials with the experimental data, and evaluate the coupling effect through the comparison of the distorted-wave Born approximation calculations with the coupled channels ones. Results: Optical models fail to describe the elastic angular distribution above the grazing angle (≈9.4∘). A correction in the geometry to effectively account for deformation of the involved nuclear systems improves the agreement up to about 14∘. Coupled channels effects are crucial to obtain good agreement at large angles in the elastic scattering cross section. Conclusions: The analysis of elastic and inelastic scattering data turned out to be a powerful tool to explore the initial and final-state interactions in heavy-ion nuclear reactions at high transferred momenta.

Published
2019

4. Nuclear neck-density determination at Fermi energy with CHIMERA detector.

Author

Pagano, A., De Filippo, E., Geraci, E., Pagano, E. V., Russotto, P., Siwek-Wilczyńska, K., Acosta, L., Auditore, L., Cap, T., Cardella, G., Chatterjee, M. B., Colonna, M., Gnoffo, B., Favela, F., Lanzalone, G., Maiolino, C., Martorana, N. S., Papa, M., Pirrone, S., and Politi, G.

Subjects
NUCLEAR density, NUCLEAR matter, DETECTORS, HEAVY ions, PARTICLES (Nuclear physics), NUCLEAR reactions
Abstract

Binary collisions of either stable or radioactive heavy ions at Fermi energies allow to study the nuclear reaction mechanisms under dynamical conditions of non-equilibrium and the formation of transient pieces of nuclear matter of very short mean life times at sub-normal density. An important role in the evolutionary phase of the collision is played by the gradient of the nuclear density affecting the isospin asymmetry of the reaction products by typical transport phenomena such as the isospin diffusion and drift. Experimental determination of the value of the nuclear matter density in the early phase of the collision is a crucial step towards understanding the underlying mechanism responsible for the production of clusters. In this paper a method for evaluating the nuclear density in semi-peripheral collisions in the reaction 124 S n + 64 N i at 35 MeV/nucleon as studied with the CHIMERA multi-particle detector is described. [ABSTRACT FROM AUTHOR]

Published
2020
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5. The ASY-EOS experiment at GSI: Investigating the symmetry energy at supra-saturation densities

Author

Lunardi, S., Russotto, P., Chartier, M., Cozma, M. D., De Filippo, E., Le Fèvre, A., Gannon, S., Gašparić, I., Kiš, M., Kupny, S., Leifels, Y., Lemmon, R. C., Li, Q., Łukasik, J., Marini, P., Pawłowski, P., Santoro, S., Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al Ajlan, A., Al Garawi, M., Al Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Bassini, R., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Czech, B., Di Toro, M., Famiano, M., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, Riccardo, Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Lombardo, I., Lynch, W. G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pirrone, S., Pleskac, R., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., Valiente Dobon, J. J., 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), Russotto, P., Chartier, M., Filippo, E., Fèvre, A., Gannon, S., Gaparić, I., Ki, M., Kupny, S., Leifels, Y., Lemmon, R., Ukasik, J., Marini, P., Pagano, A., Pawowski, P., Santoro, S, Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Cozma, D., Czech, B., Toro, M., Famiano, M., Geraci, E., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., Guidara, E., Lanzalone, G., Lasko, P., Li, Q., Lombardo, I., Lynch, W., Matthews, Z., May, L., Minniti, T., Mostazo, M., Papa, M., Pirrone, S., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., B.A.Li and J.B.Natowitz, P., Russotto, M., Chartier, E., De Filippo, A., Le Fevre, S., Gannon, A., Ga??spari??, M., Ki??, S., Kupny, Y., Leifel, R., Lemmon, J., Lukasik, P., Marini, A., Pagano, P., Pawlowski, S., Santoro, W., Trautmann, M., Veselsky, L., Acosta, M., Adamczyk, A., Al Ajlan, M., Al Garawi, S., Al Homaidhi, F., Amorini, L., Auditore, T., Aumann, Y., Ayyad, V., Baran, Z., Basrak, J., Benlliure, C., Boiano, C., Boisjoli, K., Boretzky, J., Brzychczyk, A., Budzanowski, G., Cardella, P., Cammarata, Z., Chajecki, A., Chbihi, M., Colonna, B., Czech, M., Di Toro, M., Famiano, E., Geraci, L., Grassi, V., Greco, C., Guazzoni, P., Guazzoni, M., Heil, L., Heilborn, R., Introzzi, T., Isobe, K., Kezzar, A., Krasznahorskay, N., Kurz, E., La Guidara, G., Lanzalone, P., Lasko, Q., Li, I., Lombardo, W. G., Lynch, Z., Matthew, L., May, T., Minniti, M., Mostazo, M., Papa, S., Pirrone, G., Politi, F., Porto, R., Reifarth, W., Reisdorf, F., Riccio, F., Rizzo, Rosato, Elio, D., Rossi, H., Simon, I., Skwirczynska, Z., Sosin, A., Trifirò, M., Trimarchi, M. B., Tsang, G., Verde, Vigilante, Mariano, A., Wieloch, P., Wigg, H. H., Wolter, P., Wu, S., Yennello, P., Zambon, L., Zetta, M., Zoric, Cozma, M., De Filippo, E., Le Fèvre, A., Gašparić, I., Kiš, M., Łukasik, J., Pawłowski, P., Santoro, S., Bassini, R., Di Toro, M., La Guidara, E., and Pleskac, R.

Subjects
Particle physics, History, QC1-999, Nuclear Theory, FOS: Physical sciences, and isobaric spin 24.10.Pa Thermal and statistical models, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Education, Nuclear physics, Physics and Astronomy (all), nuclear physics, heavy-ions, symmetry energy, Au+Au collisions, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment, ComputingMilieux_MISCELLANEOUS, Physics, sezele, Order (ring theory), Nuclear equation of state, Observable, 21.65.-f Nuclear matter 27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219 24.60.-k Statistical theory and fluctuations 25.75.Gz Particle correlations and fluctuations 21.10.Hw Spin, Symmetry (physics), Term (time), Computer Science Applications, parity, Nuclear reactions, Saturation (chemistry), Nucleon, Energy (signal processing)
Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation Of State (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for $^{197}$Au+$^{197}$Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011., Comment: Talk given by P. Russotto at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)

Published
2013

6. Study of nuclear reactions in laser plasmas at future ELI-NP facility.

Author

LANZALONE, G., ALTANA, C., ANZALONE, A., CAPPUZZELLO, F., CAVALLARO, M., GIZZI, L. A., LABATE, L., LAMIA, L., MASCALI, D., MUOIO, A., NEGOITA, F., ODORICI, F., PETRASCU, H., TRIFIRÒ, A., TRIMARCHI, M., and TUDISCO, S.

Subjects
*LASER plasmas, *MULTIPLICITY of nuclear particles, *NUCLEAR reactions, *PLASMA gases
Abstract

In this contribution we will present the future activities that our collaboration will carry out at ELI-NP(Extreme Light Infrastructure Nuclear Physics), the new multi peta-watt Laser facility, currently under construction at Bucharest (Romania). The activities concerns the study of nuclear reactions in laser plasmas. In this framework we proposed the construction of a new, general-purpose experimental set-up able to detect and identify neutrons and charged particles. [ABSTRACT FROM AUTHOR]

Published
2016
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7. Alpha-particle clustering in excited expanding self-conjugate nuclei.

Author

BORDERIE, B., RADUTA, AD. R., ADEMARD, G., RIVET, M. F., DE FILIPPO, E., GERACI, E., LE NEINDRE, N., CARDELLA, G., LANZALONE, G., LOMBARDO, I., LOPEZ, O., MAIOLINO, C., PAGANO, A., PIRRONE, S., POLITI, G., RIZZO, F., and RUSSOTTO, P.

Subjects
NUCLEAR reactions, NUCLEAR fragmentation, PARTICLES (Nuclear physics), COLLISIONS (Nuclear physics), NUCLEAR physics
Abstract

The fragmentation of quasi-projectiles from the nuclear reaction 40Ca+12C at 25 MeV/nucleon was used to produce a-emission sources. From a careful selection of these sources provided by a complete detection and from comparisons with models of sequential and simultaneous decays, strong indications in favour of a-particle clustering in excited 16O, 20Ne and 24Mg are reported. [ABSTRACT FROM AUTHOR]

Published
2016
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8. EXPERIMENTAL STUDIES OF THE STRUCTURE OF 16C WITH REACTIONS AT INTERMEDIATE ENERGY.

Author

DELL'AQUILA, D., ACOSTA, L., AUDITORE, L., CARDELLA, G., DE FILIPPO, E., DE LUCA, S., FRANCALANZA, L., GNOFFO, B., LANZALONE, G., LOMBARDO, I., MARTORANA, N. S., NORELLA, S., PAGANO, A., PAGANO, E. V., PAPA, M., PIRRONE, S., POLITI, G., QUATTROCCHI, L., RIZZO, F., and RUSSOTTO, P.

Subjects
EXCITATION energy (In situ microanalysis), MOLECULAR structure of microclusters, REST mass (Relativity), CARBON isotopes, NUCLEAR reactions
Abstract

The possible existence of cluster structures in 16C has been investigated by inspecting their breakup (induced on CH2 targets) in 10Be+6He events. The excitation energy of the projectile nucleus prior to decay is obtained via an invariant mass analysis of identified fragments. The experiment has been carried out at the FRIBs facility of INFN-LNS, by using a fragmentation cocktail beam at intermediate energies (≈ 55 MeV/nucleon) and the CHIMERA 4π multi-detector. A non-vanishing yield in the 10Be+6He correlations is reported at an excitation energy of about 20.5 MeV in 16C, in analogy with previous works. To improve these results, we recently performed a new experiment by coupling CHIMERA and FARCOS at forward angles. Preliminary details of the new experiment are reported in the text. [ABSTRACT FROM AUTHOR]

Published
2017
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9. FARCOS, a new array for femtoscopy and correlation spectroscopy.

Author

ACOSTA, L., PAGANO, E. V., MINNITI, T., VERDE, G., AMORINI, F., ANZALONE, A., AUDITORE, L., BUSCEMI, M., CARDELLA, G., CHBIHI, A., DE FILIPPO, E., FRANCALANZA, L., GERACI, E., GIANÌ, S., GUAZZONI, C., LA GUIDARA, E., LANZALONE, G., LOMBARDO, I., LO NIGRO, S., and LORIA, D.

Subjects
NUCLEAR reactions, SPECTRUM analysis, COLLISIONS (Nuclear physics), NUCLEAR energy, NUCLEAR physics, TELESCOPES
Abstract

Correlations between two or more particles can be used as a tool to explore the space-time features of nuclear reactions as well as spectroscopic properties of produced unbound clusters. In order to have new options to study the mentioned correlations, FARCOS (Femtoscope ARray for COrrelations and Spectroscopy) has been conceived as a compact high resolution array, composed of square telescopes. In this work the main features of FARCOS array as well as part of the physics cases are described. [ABSTRACT FROM AUTHOR]

Published
2012
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10. Use of fragmentation beams at LNS with CHIMERA detector.

Author

CARDELLA, G., ACOSTA, L., AGODI, C., AMORINI, F., ANZALONE, A., AUDITORE, L., BERCEANU, I., BUSCEMI, M., CHATTERJIEE, M. B., DEFILIPPO, E., FRANCALANZA, L., GIANÍ, R., GRASSI, L., LA GUIDARA, E., LANZALONE, G., LOMBARDO, I., LORIA, D., MINNITI, T., PAGANO, A., and PAGANO, E. V.

Subjects
RADIOACTIVE nuclear beams, NUCLEAR fragmentation, NUCLEAR reactions, NUCLEAR counters, NUCLEAR physics
Abstract

The recent intensity upgrade of the LNS fragmentation beam is discussed. The available beams, the tagging procedures and details on the beam quality are reported. The experimental program started with the CHIMERA detector using such beams is also discussed with preliminary results and future perspectives. [ABSTRACT FROM AUTHOR]

Published
2012
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11. Study of Nuclei far From Stability by Using the CHIMERA 4π Detector and Radioactive Beams at LNS.

Author

Cardella, G., Amorini, F., Anzalone, A., Auditore, L., Cavallaro, S., Chatterjee, M. B., De Filippo, E., Geraci, E., Grassi, L., Grzeszczuk, A., Guazzoni, P., La Guidara, E., Lanzalone, G., Lombardo, I., Lo Nigro, S., Loria, D., Maiolino, C., Pagano, A., Papa, M., and Pirrone, S.

Subjects
NUCLEAR reactions, RADIOACTIVE nuclear beams, RESONANCE, DETECTORS, NUCLEAR physics
Abstract

At LNS are available radioactive beams at tandem and intermediate energies provided respectively by the EXCYT and by the fragmentation FRIBS facilities. Using these beams, and the 4π detector CHIMERA, we want to study excitation and decay of resonances in light exotic nuclei populated with pick-up stripping and other reaction mechanisms. Some preliminary results obtained with stable and unstable beams are reported. [ABSTRACT FROM AUTHOR]

Published
2009
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13. Isospin aspects in nuclear reactions involving Ca beams at 25 MeV/nucleon.

Author

Lombardo, I., Agodi, C., Alba, R., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cardella, G., Cavallaro, S., Chatterjee, M., Filippo, E., Di Pietro, A., Figuera, P., Giuliani, G., Geraci, E., Grassi, L., Grzeszczuk, A., Han, J., La Guidara, E., and Lanzalone, G.

Subjects
ISOBARIC spin, NUCLEAR reactions, PARTICLES (Nuclear physics), THERMODYNAMICS, CALCIUM ions, NUCLEAR counters, COLLISIONS (Nuclear physics)
Abstract

Isospin dependence of dynamical and thermodynamical properties observed in reactions Ca+ Ca and Ca + Ti at 25 MeV/nucleon has been studied. We used the CHIMERA multi-detector array. Strong isospin effects are seen in the isotopic distributions of light nuclei and in the competition between different reaction mechanisms in semi-central collisions. We will show also preliminary results obtained in nuclear collision Ca + Ca at 25MeV/nucleon, having very high N/Z value in the entrance channel ( N/Z = 1.4). The enhancement of evaporation residue production confirms the strong role played by the N/Z degree of freedom in nuclear dynamics. [ABSTRACT FROM AUTHOR]

Published
2011
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14. LIGHT CLUSTERS EMISSION IN NUCLEAR REACTIONS AT 25 MeV/NUCLEON WITH DIFFERENT N/Z OF ENTRANCE CHANNELS.

Author

LOMBARDO, I., AGODI, C., ALBA, R., AMORINI, F., ANZALONE, A., AUDITORE, L., BERCEANU, I., CARDELLA, G., CAVALLARO, S., CHATTERJEE, M.B., DEFILIPPO, E., DIPIETRO, A., FIGUERA, P., GERACI, E., GIULIANI, G., GRASSI, L., GRZESZCZUK, A., HAN, J., LA GUIDARA, E., and LANZALONE, G.

Subjects
NUCLEAR reactions, PARTICLES (Nuclear physics), CALCIUM ions, NUCLEAR structure, COLLISIONS (Nuclear physics), NUCLEAR charge, NUCLEAR counters
Abstract

We discuss results on the emission of light clusters in nuclear reactions 40Ca + 40,48Ca,46Ti at 25 MeV/nucleon. They were detected and identified in mass and charge by means of the CHIMERA 4π array. Inclusive emission at forward angles shows that isotopic yields of Li and Be nuclei are related to the N/Z values of entrance channels. Moreover, structure effects and even-odd staggering in charge distributions of intermediate mass fragments emitted at forward angles will be shown. In agreement with previous experimental findings, odd-even effects are clearly visible in N ≈ Z systems, while are less pronounced in the neutron rich collision 40Ca+48Ca. These experimental findings are compared to preliminary data obtained in 40Ca+48Ca. collision at 25 MeV/nucleon. [ABSTRACT FROM AUTHOR]

Published
2011
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15. THE STRONG ROLE OF N/Z DEGREE OF FREEDOM IN Ca+Ca REACTIONS AT 25 MeV/NUCLEON.

Author

Lombardo, I., Agodi, C., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cardella, G., Cavallaro, S., DeFilippo, E., Giuliani, G., Geraci, E., Grassi, L., Han, J., LaGuidara, E., Lanzalone, G., Loria, D., Maiolino, C., Pagano, A., Papa, M., and Pirrone, S.

Subjects
NUCLEAR reactions, DEGREES of freedom, CALCIUM isotopes, COLLISIONS (Nuclear physics), PARTICLES (Nuclear physics), EVAPORATION (Chemistry), SCIENTIFIC observation, NUCLEAR physics
Abstract

Isospin effects on dynamics of semi-central collisions involving 40Ca+40Ca, 40Ca+48Ca and 48Ca+48Ca reactions at 25 MeV/nucleon have been investigated. For the selected class of events, the balance between the emission of evaporation residues and the presence of binary-like phenomena seems to be influenced by the neutron to proton ratio (N/Z) of entrance channels. In particular, for neutron-rich systems, evaporation residue emission is enhanced. Experimental observations confirm the key role played by the N/Z degree of freedom on nuclear dynamics at 25 MeV/nucleon. [ABSTRACT FROM AUTHOR]

Published
2011
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16. STUDY OF EXOTIC BEAMS INDUCED REACTIONS IN THE REGION OF 11Be WITH CHIMERA ARRAY.

Author

AMORINI, F., ANZALONE, A., AUDITORE, L., CARDELLA, G., CAVALLARO, S., CHATTERJEE, M. B., DE FILIPPO, E., GERACI, E., GRASSI, L., GRZESZCZUK, A., GUAZZONI, P., HAN, J., LA GUIDARA, E., LANZALONE, G., LOMBARDO, I., LO NIGRO, S., LORIA, D., MAIOLINO, C., PAGANO, A., and PAPA, M.

Subjects
LIGHT, NUCLEAR physics, PHYSICS, NUCLEAR energy, NUCLEAR reactions
Abstract

Intermediate energy beams of light exotic nuclei have been produced at LNS by the FRIBs facility. Thanks to these beams, a complex study of the structure of halo nuclei in the 11Be region has been started exploiting the performances of the CHIMERA array. [ABSTRACT FROM AUTHOR]

Published
2010
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17. Nuclear fragment identification with [formula omitted]E-E telescopes exploiting silicon carbide detectors.

Author

Ciampi, C., Pasquali, G., Altana, C., Bini, M., Boscardin, M., Calcagno, L., Casini, G., Cirrone, G.A.P., Fazzi, A., Giove, D., Gorini, G., Labate, L., La Via, F., Lanzalone, G., Litrico, G., Muoio, A., Ottanelli, P., Poggi, G., Puglia, S.M.R., and Rebai, M.

Subjects
*SILICON carbide, *NUCLEAR fragmentation, *NUCLEAR reactions, *SILICON detectors, *TELESCOPES
Abstract

Abstract A study of the response of three Δ E-E telescopes to fragments produced in nuclear interactions at 40 AMeV is presented. All the employed telescopes feature silicon carbide (SiC) detectors for at least one detection stage. Two identification methods have been used and their performance discussed: the Δ E-E technique and the Pulse Shape Analysis technique (for identification of nuclear fragments stopped in a single SiC layer). Identification capabilities similar to those obtained with the best available silicon detectors have been found for the SiC detector prototypes studied in this work. [ABSTRACT FROM AUTHOR]

Published
2019
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18. Measurements of pulse shape discrimination with EJ 299-33 plastic scintillator using heavy ion reaction.

Author

Pagano, E.V., De Filippo, E., Russotto, P., Auditore, L., Cardella, G., Chatterjee, M.B., Geraci, E., Gnoffo, B., Guazzoni, C., Lanzalone, G., De Luca, S., Maiolino, C., Martorana, N.S., Pagano, A., Papa, M., Parsani, T., Pirrone, S., Politi, G., Porto, F., and Quattrocchi, L.

Subjects
*PULSE shaping (Digital communications), *SCINTILLATORS, *HEAVY ions, *NUCLEAR reactions, *PHOTOMULTIPLIERS, *ELECTRONICS
Abstract

Abstract The motivation of the present paper is to study the performance of EJ 299-33 scintillator in online and off-line analysis in high rate scattering for nuclear reaction experiments performed with heavy ions. An experiment was carried out inside the CHIMERA chamber using 24Mg beams at 71.5 MeV and 81 MeV impinging on 92ZrO 2 target. The plastic scintillator was backed by a photomultiplier tube and the anode pulses were digitized through 100 MHz GET electronics for the purpose of pulse shape discrimination (PSD) studies. Performances of the plastic scintillator have been tested with respect to PSD capabilities and energy spectra analysis under beam irradiations in a high background environment. [ABSTRACT FROM AUTHOR]

Published
2018
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19. First measurement of the isoscalar excitation above the neutron emission threshold of the Pygmy Dipole Resonance in 68Ni.

Author

Martorana, N.S., Cardella, G., Lanza, E.G., Acosta, L., Andrés, M.V., Auditore, L., Catara, F., De Filippo, E., De Luca, S., Dell' Aquila, D., Gnoffo, B., Lanzalone, G., Lombardo, I., Maiolino, C., Norella, S., Pagano, A., Pagano, E.V., Papa, M., Pirrone, S., and Politi, G.

Subjects
*SCALAR field theory, *NEUTRON emission, *DIPOLE moments, *NICKEL isotopes, *NUCLEAR reactions
Abstract

The excitation of the Pygmy Dipole Resonance (PDR) in the 68 Ni nucleus, above the neutron emission threshold, via an isoscalar probe has been observed for the first time. The excitation has been produced in reactions where a 68 Ni beam, obtained by the fragmentation of a 70 Zn primary beam at INFN-LNS, impinged on a 12 C target. The γ -ray decay was detected using the CsI(Tl) detectors of the CHIMERA multidetector sphere. The 68 Ni isotope as well as other heavy ion fragments were detected using the FARCOS array. The population of the PDR was evidenced by comparing the detected γ -ray energy spectra with statistical code calculations. The isotopic resolution of the detection system allows also to directly compare neutron decay channels with the 68 Ni channel, better evidencing the PDR decay response function. This comparison allows also the extraction of the PDR cross section and the relative γ -ray angular distribution. The measured γ -ray angular distribution confirms the E1 character of the transition. The γ decay cross section for the excitation of the PDR was measured to be 0.32 mb with a 18% of statistical error. [ABSTRACT FROM AUTHOR]

Published
2018
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20. Probing clustering in excited alpha-conjugate nuclei.

Author

Borderie, B., Raduta, Ad.R., Ademard, G., Rivet, M.F., De Filippo, E., Geraci, E., Le Neindre, N., Alba, R., Amorini, F., Cardella, G., Chatterjee, M., Guinet, D., Lautesse, P., La Guidara, E., Lanzalone, G., Lanzano, G., Lombardo, I., Lopez, O., Maiolino, C., and Pagano, A.

Subjects
*HEAVY ion collisions, *NUCLEAR reactions, *COLLISIONS (Nuclear physics), *PARTICLE dynamics analysis, *PARTICLE emissions
Abstract

The fragmentation of quasi-projectiles from the nuclear reaction 40 Ca+ 12 C at 25 MeV per nucleon bombarding energy was used to produce α -emission sources. From a careful selection of these sources provided by a complete detection and from comparisons with models of sequential and simultaneous decays, evidence in favor of α -particle clustering from excited 16 O, 20 Ne and 24 Mg is reported. [ABSTRACT FROM AUTHOR]

Published
2016
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21. Silicon Carbide characterization at the n_TOF spallation source with quasi-monoenergetic fast neutrons

Author

Marica Rebai, Andrea Muraro, Annamaria Muoio, Giuseppe Gorini, M. DiCorato, S. Tudisco, F. Mingrone, F. Murtas, Carlo Cazzaniga, D. Rigamonti, C. Altana, F. La Via, Massimo Barbagallo, Marco Tardocchi, M.H. Kushoro, G. Lanzalone, E. Perelli Cippo, G. Croci, Kushoro, M, Rebai, M, Dicorato, M, Rigamonti, D, Altana, C, Cazzaniga, C, Croci, G, Gorini, G, Lanzalone, G, La Via, F, Muoio, A, Muraro, A, Murtas, F, Perelli Cippo, E, Tardocchi, M, Barbagallo, M, Mingrone, F, and Tudisco, S

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Neutron cross sections, Silicon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, chemistry.chemical_element, 02 engineering and technology, Neutron scattering, Silicon carbide, Pulse height spectrum, 7. Clean energy, 01 natural sciences, Detection efficiency, Nuclear physics, chemistry.chemical_compound, 0103 physical sciences, Neutron cross section, Response to neutrons, Neutron, Spallation, Solid state detectors, 010306 general physics, Nuclear Experiment, Silicon carbides (SiC), Instrumentation, Physics, Energy resolutions, Neutrons, Monte Carlo methods, Neutron scattering, Nuclear reactions, Silicon carbide, Silicon detectors, Spalling, Monte Carlo methods, 021001 nanoscience & nanotechnology, Neutron temperature, Quasi-monoenergetic, Spalling, chemistry, Silicon detectors, Nuclear reactions, 0210 nano-technology
Abstract

Silicon Carbide (SiC) is a relatively new entry in the world of solid-state detectors. Although SiC response to neutrons is more complex than the one obtained with diamonds, the measured energy resolution (FWHM/ E d 4 % ) makes SiC an interesting alternative to diamond and silicon detectors for fast neutrons. The results obtained from the measurements of the response of a 100 μ m thick SiC detector to neutrons in the energy range between 3 and 20 MeV at the n_TOF spallation source at CERN are presented in this paper. By selecting the neutron energy by means of the time of flight, the detector response to quasi-mono-energetic neutrons was measured. The main neutron-induced nuclear reactions were identified in the measured pulse height spectrum. Detection efficiency as a function of neutron energy was measured and interpreted based on available neutron cross section and by making use of Monte Carlo simulations.

Published
2020
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22. Kinematical coincidence method in transfer reactions.

Author

Acosta, L., Amorini, F., Auditore, L., Berceanu, I., Cardella, G., Chatterjiee, M.B., De Filippo, E., Francalanza, L., Gianì, R., Grassi, L., Grzeszczuk, A., La Guidara, E., Lanzalone, G., Lombardo, I., Loria, D., Minniti, T., Pagano, E.V., Papa, M., Pirrone, S., and Politi, G.

Subjects
*KINEMATICS, *ANGULAR distribution (Nuclear physics), *HIGH resolution spectroscopy, *NUCLEAR reactions, *PARTICLES (Nuclear physics), *NUCLEAR counters
Abstract

Abstract: A new method to extract high resolution angular distributions from kinematical coincidence measurements in binary reactions is presented. Kinematics is used to extract the center of mass angular distribution from the measured energy spectrum of light particles. Results obtained in the case of 10Be+p→9Be+d reaction measured with the CHIMERA detector are shown. An angular resolution of few degrees in the center of mass is obtained. The range of applicability of the method is discussed. [Copyright &y& Elsevier]

Published
2013
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23. Effects of neutron richness on the behavior of nuclear systems at intermediate energies.

Author

Cardella, G., Giuliani, G., Lombardo, I., Papa, M., Acosta, L., Agodi, C., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cavallaro, S., Chatterjee, M. B., De Filippo, E., Geraci, E., Grassi, L., Han, J., La Guidara, E., Loria, D., Lanzalone, G., and Maiolino, C.

Subjects
*NEUTRONS, *NUCLEAR energy, *PARTICLES (Nuclear physics), *CALCIUM isotopes, *NUCLEAR reactions, *COMPARATIVE studies, *MOLECULAR dynamics
Abstract

We discuss results concerning the behavior of hot nuclear sources formed in 40,48Ca + 40,48Ca reactions at 25 MeV/nucleon. A correlation between the neutron-to-proton ratio of the total systems and heavy residue production is found. This correlation underlines the strong role played by the neutron-to-proton ratio degree of freedom on the behavior of hot nuclei at intermediate energies. Comparisons of our data with Constrained Molecular Dynamics calculations confirm that a moderately stiff behavior of the symmetry potential must be used to reproduce experimental data. These findings open the way for future investigations with exotic beams at radioactive ion beam facilities. [ABSTRACT FROM AUTHOR]

Published
2012
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24. Evidence for α-particle condensation in nuclei from the Hoyle state deexcitation

Author

Raduta, Ad.R., Borderie, B., Geraci, E., Le Neindre, N., Napolitani, P., Rivet, M.F., Alba, R., Amorini, F., Cardella, G., Chatterjee, M., De Filippo, E., Guinet, D., Lautesse, P., La Guidara, E., Lanzalone, G., Lanzano, G., Lombardo, I., Lopez, O., Maiolino, C., and Pagano, A.

Subjects
*PARTICLES (Nuclear physics), *CONDENSATION, *NUCLEAR excitation, *NUCLEAR reactions, *CALCIUM ions, *CALCIUM isotopes, *NUCLEAR counters
Abstract

Abstract: The fragmentation of quasi-projectiles from the nuclear reaction 40Ca + 12C at 25 MeV/nucleon was used to produce excited states candidates to α-particle condensation. Complete kinematic characterization of individual decay events, made possible by a high-granularity 4π charged particle multi-detector, reveals that of the particle decays of the Hoyle state correspond to direct decays in three equal-energy α-particles. [Copyright &y& Elsevier]

Published
2011
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25. Silicon Carbide characterization at the n_TOF spallation source with quasi-monoenergetic fast neutrons.

Author

Kushoro, M.H., Rebai, M., Dicorato, M., Rigamonti, D., Altana, C., Cazzaniga, C., Croci, G., Gorini, G., Lanzalone, G., La Via, F., Muoio, A., Muraro, A., Murtas, F., Perelli Cippo, E., Tardocchi, M., Barbagallo, M., Mingrone, F., and Tudisco, S.

Subjects
*MONTE Carlo method, *FAST neutrons, *SILICON carbide, *NEUTRON temperature, *NUCLEAR reactions, *SILICON detectors, *NEUTRON counters
Abstract

Silicon Carbide (SiC) is a relatively new entry in the world of solid-state detectors. Although SiC response to neutrons is more complex than the one obtained with diamonds, the measured energy resolution (FWHM/ E d < 4 %) makes SiC an interesting alternative to diamond and silicon detectors for fast neutrons. The results obtained from the measurements of the response of a 100 μ m thick SiC detector to neutrons in the energy range between 3 and 20 MeV at the n_TOF spallation source at CERN are presented in this paper. By selecting the neutron energy by means of the time of flight, the detector response to quasi-mono-energetic neutrons was measured. The main neutron-induced nuclear reactions were identified in the measured pulse height spectrum. Detection efficiency as a function of neutron energy was measured and interpreted based on available neutron cross section and by making use of Monte Carlo simulations. [ABSTRACT FROM AUTHOR]

Published
2020
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26. N/Z effect on reaction mechanisms cross sections in the $^{78}Kr+^{40}Ca$ and $^{86}Kr+^{48}Ca$ collisions at 10 AMeV

Author

L. Quattrocchi, Michele Papa, F. Porto, B. Borderie, S. De Luca, Giuseppe Verde, G. Ademard, F. Rizzo, A. Pagano, B. Gnoffo, N Le Neidre, J.D. Frankland, S. Pirrone, Lucrezia Auditore, P. Lautesse, D. Lebhertz, E. De Filippo, N. S. Martorana, Antonio D'Onofrio, E. Piasecki, S. Norella, E. V. Pagano, M. La Commara, Maria Colonna, G. Politi, Ivano Lombardo, M. Trimarchi, J.P. Wieleczko, P. Russotto, K. Mazurek, G. Spadaccini, I. Bercenau, D. Dell'Aquila, Antonio Trifiro, G. Cardella, A. Chibihi, C. Beck, Eric Bonnet, G. Lanzalone, Mariano 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), 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 Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), 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), 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), 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Strasbourg (UNISTRA)-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)-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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Gnoffo, B., Pirrone, S., Politi, G., La Commara, M., Wieleczko, J. P., De Filippo, E., Russotto, P., Trimarchi, M., Vigilante, M., Ademard, G., Auditore, L., Beck, C., Bercenau, I., Bonnet, E., Borderie, B., Cardella, G., Chibihi, A., Colonna, M., Dell'Aquila, D., De Luca, S., D'Onofrio, A., Frankland, J. D., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neidre, N., Lombardo, I., Martorana, N. S., Mazurek, K., Norella, S., Pagano, A., Pagano, E. V., Papa, M., Piasecki, E., Porto, F., Quattrocchi, L., Rizzo, F., Spadaccini, G., Trifirò, A., Verde, G., 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), and Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)

Subjects
Nuclear reaction, History, Isotope, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 010308 nuclear & particles physics, Chemistry, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Charged particle, Computer Science Applications, Education, Chemical kinetics, Nuclear physics, Physics and Astronomy (all), medicine.anatomical_structure, 0103 physical sciences, medicine, Neutron, Calcium, De-excitations, Evaporation process, Long-lived systems, Multi-detectors, Reaction mechanism, Nuclear reactions, Atomic physics, 010306 general physics, Nucleon, Nucleus
Abstract

International audience; Nuclear reactions between medium-mass nuclei at low energy are characterized by the competition between binary and evaporation process in the compound nucleus de-excitation. A study of the influence of the neutron richness of the entrance channel on the decay paths of the compound nuclei formed in the (78) Kr +(40) Ca and (86) Kr +(48) Ca at 10 MeV/A is presented. The experiment has been performed at Laboratori Nazionali del Sud by using the CHIMERA 4π multidetector for charged particles. The Kinematical characteristics of the two reactions support the conclusion of a production via long lived system. Besides the results relative to the n-poor system are compared to those obtained at GANIL, performed at 5.5 AMeV, in order to study the energy influence.

Published
2016

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