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10 results on '"M. Polettini"'

1. Conceptual design of the AGATA 2π array at LNL

Author

J.J. Valiente-Dobón, R. Menegazzo, A. Goasduff, D. Agguiaro, P. Aguilera, F. Angelini, M. Balogh, D. Bazzacco, J. Benito, G. Benzoni, N. Bez, M. Bolognesi, S. Bottoni, D. Brugnara, S. Carollo, P. Cocconi, A. Cogo, J. Collado, F.C.L. Crespi, A. Ertoprak, R. Escudeiro, F. Galtarossa, E.R. Gamba, A. Gambalonga, B. Góngora Servín, A. Gottardo, A. Gozzelino, M. Gulmini, Z. Huang, T. Marchi, D. Mengoni, P. Modanese, D.R. Napoli, J. Pellumaj, R.M. Pérez-Vidal, S. Pigliapoco, E. Pilotto, L. Ramina, M. Rampazzo, W. Raniero, M. Rebeschini, K. Rezynkina, D. Rosso, M. Scarcioffolo, D. Scarpa, M. Sedlák, R. Smith, N. Toniolo, F. Veronese, V. Volpe, L. Zago, I. Zanon, G. Zhang, R. Abels, M.L. Allegrini, C. Aufranc, G. Baulieu, C. Belkhiria, M. Benettoni, D. Benini, M. Bentley, M. Biasotto, M. Blaizot, J. Blasco Miquel, C. Boiano, A. Boston, H. Boston, A. Boujrad, P. Bourgault, A. Bracco, S. Brambilla, I. Burrows, F. Camera, S. Capra, A. Capsoni, R. Cash, J.V. Civera, E. Clément, S. Coelli, M. Cordwell, L. Corradi, S. Coudert, G. De Angelis, L. De Ruvo, G. Debras, M. Del Fabbro, J. Diklić, N. Dosme, G. Duchene, B. Duclos, J. Dudouet, J. Eberth, S. Elloumi, C. Everett, S. Fantinel, M. Fillinger, E. Fioretto, C. Fransen, A. Gadea, L. Gibelin, V. González, J. Goupil, C. Görgen, A. Grant, K. Green, J. Ha, T. Hartnett, K. Henseler, H. Hess, R. Hirsch, C. Houarner, J. Jacob, T. Joannem, D.S. Judson, N. Karkour, M. Karolak, M. Kebbiri, J. Kieffer, M. Labiche, X. Lafay, P. Le Jeannic, A. Lefevre, E. Legay, F. Legruel, S. Lenzi, S. Leoni, D. Linget, M. Liptrot, A. López-Martens, A. Lotodé, L. Manara, L. Ménager, T. Mijatović, B. Million, A. Minarello, G. Montagnoli, P. Morrall, I. Mullacrane, J. Nyberg, G. Philippon, M. Polettini, F. Popieul, A. Pullia, F. Recchia, P. Reiter, G. Richardt, M. Rocchini, A. Roger, F. Saillant, E. Sanchis, Md.S.R. Laskar, G. Secci, M.-H. Sigward, J. Simpson, N. Solenne, F. Spee, A.M. Stefanini, O. Stézowski, S. Szilner, N. Templeton, Ch. Theisen, S. Thiel, F. Tomasi, S. Tzvetkov, D. Vigano, E. Viscione, O. Wieland, K. Wimmer, G. Wittwer, M. Zielińska, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), Institut Pluridisciplinaire Hubert Curien (IPHC), and 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)

Subjects
AGATA spectrometer, DANTE detector, EUCLIDES detector, LNL facility, Plunger device, PRISMA spectrometer, Pulse shape analysis, TRACE detector, γ-ray tracking, Nuclear and High Energy Physics, Settore FIS/04 - Fisica Nucleare e Subnucleare, ray tracking, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation
Abstract

International audience; The Advanced GAmma Tracking Array (AGATA) has been installed at Laboratori Nazionali di Legnaro (LNL), Italy. In this installation, AGATA will consist, at the beginning, of 13 AGATA triple clusters (ATCs) with an angular coverage of 1π, and progressively the number of ATCs will increase up to a 2π angular coverage. This setup will exploit both stable and radioactive ion beams delivered by the Tandem–PIAVE-ALPI accelerator complex and the SPES facility. The new implementation of AGATA at LNL will be used in two different configurations, firstly one coupled to the PRISMA large-acceptance magnetic spectrometer and lately a second one at Zero Degrees, along the beam line. These two configurations will allow us to cover a broad physics program, using different reaction mechanisms, such as Coulomb excitation, fusion-evaporation, transfer and fission at energies close to the Coulomb barrier. These setups have been designed to be coupled with a large variety of complementary detectors such as charged particle detectors, neutron detectors, heavy-ion detectors, high-energy γ-ray arrays, cryogenic and gasjet targets and the plunger device for lifetime measurements. We present in this paper the conceptual design, characteristics and performance figures of this implementation of AGATA at LNL.

Published
2023

2. First Report of a Doublet 2209-keV State in $^{100}$Zr

Author

D. Kalaydjieva, P.E. Garrett, H. Bidaman, M. Rocchini, M. Zielińska, W. Korten, V. Bildstein, S. Pannu, Z. Ahmed, C. Andreoiu, D. Annen, G.C. Ball, G. Benzoni, S.S. Bhattacharjee, S. Buck, R.J. Coleman, S. Devinyak, I. Dillmann, R. Caballero-Folch, F.H. Garcia, A.B. Garnsworthy, B. Greaves, C.J. Griffin, G.F. Grinyer, E. Gyabeng Fuakye, G. Hackman, D. Hymers, R. Kanungo, K. Kapoor, E. Kasanda, N. Marchini, K.M. Mashtakov, A. Nannini, C. Natzke, B. Olaizola, K. Ortner, C.M. Petrache, M. Polettini, A.J. Radich, N. Saei, M. Satrazani, M. Siciliano, M. Singh, P. Spagnoletti, C.E. Svensson, D.A. Torres, R. Umashankar, V. Vedia, T. Zidar, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; A β-decay experiment aiming at investigation of the low-spin structure of 100Zr was performed using the GRIFFIN spectrometer at TRIUMFISAC. Based on the obtained data, a new 2 + state is postulated which is degenerate in energy with the established (5+) level at 2209 keV.

Published
2022

4. Nature of seniority symmetry breaking in the semimagic nucleus Ru-94

Author

B. Das, B. Cederwall, C. Qi, M. Górska, P. H. Regan, Ö. Aktas, H. M. Albers, A. Banerjee, M. M. R. Chishti, J. Gerl, N. Hubbard, S. Jazrawi, J. Jolie, A. K. Mistry, M. Polettini, A. Yaneva, S. Alhomaidhi, J. Zhao, T. Arici, S. Bagchi, G. Benzoni, P. Boutachkov, T. Davinson, T. Dickel, E. Haettner, O. Hall, Ch. Hornung, J. P. Hucka, P. R. John, I. Kojouharov, R. Knöbel, D. Kostyleva, N. Kuzminchuk, I. Mukha, W. R. Plass, B. S. Nara Singh, J. Vasiljević, S. Pietri, Zs. Podolyák, M. Rudigier, H. Rösch, E. Sahin, H. Schaffner, C. Scheidenberger, F. Schirru, A. Sharma, R. Shearman, Y. Tanaka, J. Vesić, H. Weick, H. J. Wollersheim, U. Ahmed, A. Algora, C. Appleton, J. Benito, A. Blazhev, A. Bracco, A. M. Bruce, M. Brunet, R. Canavan, A. Esmaylzadeh, L. M. Fraile, G. Häfner, H. Heggen, D. Kahl, V. Karayonchev, R. Kern, A. Korgul, G. Kosir, N. Kurz, R. Lozeva, M. Mikolajczuk, P. Napiralla, R. Page, C. M. Petrache, N. Pietralla, J.-M. Régis, P. Ruotsalainen, L. Sexton, V. Sanchez-Temble, M. Si, J. Vilhena, V. Werner, J. Wiederhold, W. Witt, P. J. Woods, and G. Zimba

Subjects
Nuclear Theory, Física nuclear, Nuclear Experiment
Abstract

Direct lifetime measurements via gamma -gamma coincidences using a fast timing detector array consisting of LaBr3(Ce) scintillators has been applied to determine the lifetime of low-lying states in the semimagic (N = 50) nucleus Ru-94. The experiment was carried out as the first in a series of "FAIR-0" experiments with the DESPEC experimental setup at the Facility for Antiproton and Ion Research (FAIR). Excited states in Ru-94 were populated primarily via the beta-delayed proton emission of Pd-95 nuclei, produced in the projectile fragmentation of an 850 MeV/nucleon Xe-124 beam impinging on a 4 g/cm(2) Be-9 target. While the deduced E2 strength for the 2(+) -> 0(+) transition in the yrast cascade follows the expected behavior for conserved seniority symmetry, the intermediate 4(+) -> 2(+) transition exhibits a drastic enhancement of transition strength in comparison with pure-seniority model predictions as well as standard shell model predictions in the f pg proton hole space with respect to doubly magic Sn-100. The anomalous behavior is ascribed to a subtle interference between the wave function of the lowest seniority v = 2, I-pi = 4(+) state and that of a close-lying v = 4 state that exhibits partial dynamic symmetry. In addition, the observed strongly prohibitive 6(+) -> 4(+) transition can be attributed to the same mechanism but with a destructive interference. It is noted that such effects may provide stringent tests of the nucleon-nucleon interactions employed in state-of-the-art theoretical model calculations.

Published
2022

5. (\gamma \) Decay from the Near-neutron-threshold \(2^{+}\) State in \(^{14}\)C: A Probe of Collectivization Phenomena in Light Nuclei

Author

G. Corbari, S. Bottoni, M. Ciemala, F.C.L. Crespi, S. Leoni, B. Fornal, R.V.F. Janssens, S.D. Pain, M. Siciliano, E. Albanese, A.D. Ayangeakaa, G. Benzoni, S. Carmichael, M. Carpenter, K. Chipps, N. Cieplicka, P. Copp, J. Forson, E. Gamba, L.W. Iskra, H. Jayatissa, F. Kondev, T. Lauritsen, B. Million, C. Müller-Gatermann, A. Palmisano, M. Polettini, C. Porzio, W. Reviol, N. Sensharma, D. Seweryniak, C. Ummel, O. Wieland, G. Wilson, S. Zhu, and S. Ziliani

Subjects
General Physics and Astronomy
Published
2023

7. Commissioning the FAst TIMing array (FATIMA) at FAIR Phase-0: Half-lives of excited states in the N=50 isotones 96Pd and 94Ru

Author

S. Jazrawi, A. Yaneva, M. Polettini, B. Das, P.H. Regan, M. Górska, B. Cederwall, J. Jolie, H.M. Albers, M.M.R. Chishti, A. Banerjee, N. Hubbard, A.K. Mistry, M. Rudigier, G. Benzoni, J. Gerl, A.M. Bruce, Zs Podolyák, B.S. Nara Singh, G.X. Zhang, S. Alhomaidhi, C. Appleton, T. Arici, A. Blazhev, T. Davinson, A. Esmaylzadeh, L.M. Fraile, G. Häfner, O. Hall, P.R. John, V. Karayonchev, I. Koujoharov, N. Kurz, M. Mikolajczuk, N. Pietralla, S. Pietri, J.M. Regis, E. Sahin, L. Sexton, H. Schaffner, C. Scheidenberger, A. Sharma, J. Vesic, H. Weick, V. Werner, R. Lozeva, and M. Si

Subjects
Radiation
Published
2022

8. The GALILEO γ-ray array at the Legnaro National Laboratories

Author

R. Menegazzo, I. Zanon, F. Veronese, D.A. Testov, J. Ha, N. Bez, B. Million, G. Pasqualato, Alberto Pullia, M. Biasotto, L. Ramina, S. Bottoni, C. A. Ur, M. L. Cortés, D. Mengoni, S. Coelli, G. Gosta, C. Fanin, M. Siciliano, A. Saltarelli, D. Bazzacco, D. Tomasella, J. J. Valiente-Dobón, S. Leoni, M. Romanato, S. Ventura, A. Gadea, N. Toniolo, Marco Bellato, Diego Barrientos, S. Brambilla, D. Brugnara, R.M. Pérez-Vidal, F. Recchia, F. C. L. Crespi, F.J. Egea, S. Lunardi, S. Capra, M. Rebeschini, S. Fantinel, G. Jaworski, A. Bracco, M. Gulmini, G. Rampazzo, M. Scarcioffolo, N. Blasi, J. Pellumaj, S. Pigliapoco, G. Benzoni, V. Volpe, P. Cocconi, A. Boso, O. Wieland, K. Hadyńska-Klȩk, E.R. Gamba, A. Capsoni, A. Gambalonga, E. Viscione, F. Camera, G. de Angelis, A. Nannini, Roberto Isocrate, C. Boiano, A. Illana, M. Rocchini, G. Zhang, A. Gottardo, A. Goasduff, C. Gesmundo, P. R. John, N. Marchini, S. Ziliani, K. Rezynkina, D. R. Napoli, E. Gregor, A. Gozzelino, D. Rosso, M. Rampazzo, V. Modamio, M. Polettini, M. Magalini, F. Tomasi, S. M. Lenzi, and C. Porzio

Subjects
Physics, Nuclear and High Energy Physics, Silicon, business.industry, Instrumentation, High-resolution γ-ray spectroscopy, Detector, Neutron, DAQ, Electronics, HPGe, Semiconductor detector, Optics, Data acquisition, Galileo (vibration training), business, Hpge detector
Abstract

GALILEO, a new 4 π high-resolution γ -detection array, based on HPGe detectors, has been developed and installed at the Legnaro National Laboratories. The GALILEO array greatly benefits from a fully-digital read-out chain, customized DAQ, and a variety of complementary detectors to improve the resolving power by the detection of particles, ions or high-energy γ -ray transitions. In this work, a full description of the array, including electronics and DAQ, is presented together with its complementary instrumentation.

Published
2021

9. Geometric aspects of Schnakenberg’s network theory of macroscopic nonequilibrium observables

Author

M. Polettini

Subjects
Classical mechanics, Differential form, Entropy (statistical thermodynamics), Entropy production, Observable, Graph theory, Network theory, Gauge theory, Quantum field theory, Mathematics
Abstract

Schnakenberg’s network theory deals with macroscopic thermodynamical observables (forces, currents and entropy production) associated to the steady states of diffusions on generic graphs. Using results from graph theory and from the theory of discrete differential forms we recast Schnakenberg's treatment in the form of a simple discrete gauge theory, which allows to interpret macroscopic forces as the Wilson loops of a real connection. We discuss the geometric properties of transient states, showing that heat fluxes allow for a notion of duality of macroscopic observables which interchanges the role of the environment and that of the system. We discuss possible generalizations to less trivial gauge groups and the relevance for nonequilibrium fluctuation theorems. Based on work in collaboration with professor A. Maritan, University of Padua, to be published.

Published
2011

10. Prefazione

Author

CIPOLLA, COSTANTINO, NIERO M, POLETTINI P, and Cipolla C

Published
2008

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