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2. Systematic reduction of the proton-removal cross section in neutron-rich medium-mass nuclei

Author

J. Díaz-Cortés, J. Benlliure, J.L. Rodríguez-Sánchez, H. Álvarez-Pol, T. Aumann, C.A. Bertulani, B. Blank, E. Casarejos, D. Cortina-Gil, D. Dragosavac, V. Föhr, A. Gargano, M. Gascón, W. Gawlikowicz, A. Heinz, K. Helariutta, A. Kelić-Heil, S. Lukić, F. Montes, D. Pérez-Loureiro, L. Pieńkowski, K.-H. Schmidt, M. Staniou, K. Subotić, K. Sümmerer, J. Taieb, and A. Trzcińska

Subjects
Nucleon removal, Medium-mass neutron-rich nuclei, Short-range correlations, Physics, QC1-999
Abstract

Single-neutron and single-proton removal cross sections have been measured for medium-mass neutron-rich nuclei around Z=50 and energies around 1000A MeV using the FRagment Separator (FRS) at GSI. The measured cross sections confirm the relative low values of the proton-removal cross sections, observed since a long time ago and not yet understood. Model calculations considering the knock-out process together with initial- and final-state interactions describe the measured neutron-removal cross sections. Proton-removal cross sections are, however, significantly over-predicted by the same calculations. The observed difference can be explained to a large extent by the knock-out of short-range correlated nucleons from dominant neutron-proton pairs in neutron-rich nuclei.

Published
2020
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3. Neutron-rich fragments produced by in-flight fission of U-238

Author

K. Sümmerer, Andreas Martin Heinz, J. L. Rodriguez-Sanchez, Kerttuli Helariutta, D. Pérez-Loureiro, M. Staniou, L. Pienkowski, A. Trzcińska, J. Díaz-Cortes, M. Gascon, J. Taieb, V. Föhr, K. Subotic, Enrique Casarejos, J. Benlliure, W. Gawlikowicz, K.-H. Schmidt, S. Lukic, B. Blank, Fernando Montes, H. Alvarez-Pol, D. Dragosavac, A. Kelic-Heil, and Department of Chemistry

Subjects
Physics, COLLISIONS, Isotope, 010308 nuclear & particles physics, Fission, Projectile, Nuclear Theory, 116 Chemical sciences, Separator (oil production), 01 natural sciences, 114 Physical sciences, CROSS-SECTIONS, Nuclear physics, MODEL, YIELDS, 0103 physical sciences, Coulomb, RESIDUES, ISOTOPES, Neutron, PROJECTILE-FISSION, 010306 general physics, Nuclear Experiment, NUCLEUS
Abstract

The production cross sections of neutron-rich fission residues in reactions induced by U238 projectiles at 950A MeV impinging on Pb and Be targets are investigated at the Fragment Separator at GSI. These two targets allow us to investigate fission processes induced by two reaction mechanisms, Coulomb and nuclear excitations, and to study the role of these mechanisms in the neutron excess of the final fragments. © 2019 American Physical Society.

Published
2019

4. Systematic Investigation of Nucleon Knockout around $^{132}$Sn

Author

J. L. Rodriguez-Sanchez, M. Staniou, L. Pienkowski, J. Díaz-Cortes, V. Föhr, J. Taieb, Enrique Casarejos, D. Cortina-Gil, Thomas Aumann, S. Lukic, Fernando Montes, J. Benlliure, Andreas Martin Heinz, K. Subotic, D. Dragosavac, K. H. Schmidt, A. Kelic-Heil, A. Trzcińska, W. Gawlikowicz, H. Alvarez-Pol, A. Gargano, Kerttuli Helariutta, B. Blank, M. Gascón, Carlos A. Bertulani, D. Pérez-Loureiro, 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), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Department of Physics, Tracers in Molecular Imaging (TRIM), Department of Chemistry, 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
Nuclear physics, Physics, 010308 nuclear & particles physics, 0103 physical sciences, education, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, Nucleon, Nuclear Experiment, 01 natural sciences, 114 Physical sciences
Abstract

International audience; Neutron- and proton-removal cross sections for nuclei around ^132Sn have been systematically measured. The measurements clearly show the effect of the N = 82 closed shells. Model calculations describing all processes leading to single nucleon removal residual nuclei provide a reasonable description of the neutron removal process but clearly overestimate the proton removal ones. This overestimation of the proton removal channels could be explained as due to the presence of short-range correlated neutron-proton pairs in nuclei.

Published
2018

5. Systematic reduction of the proton-removal cross section in neutron-rich medium-mass nuclei

Author

Andreas Martin Heinz, K.-H. Schmidt, B. Blank, M. Staniou, J. Benlliure, A. Kelic-Heil, K. Helariutta, W. Gawlikowicz, Enrique Casarejos, J. L. Rodriguez-Sanchez, Thomas Aumann, L. Pienkowski, K. Sümmerer, J. Díaz-Cortes, D. Cortina-Gil, M. Gascon, A. Gargano, Carlos A. Bertulani, H. Alvarez-Pol, A. Trzcińska, S. Lukic, D. Dragosavac, Fernando Montes, J. Taieb, V. Föhr, D. Pérez-Loureiro, K. Subotic, Materials Physics, Tracers in Molecular Imaging (TRIM), Department of Chemistry, 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), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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
inorganic chemicals, Nuclear and High Energy Physics, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 114 Physical sciences, 01 natural sciences, Nuclear Theory (nucl-th), Nuclear physics, Medium-mass neutron-rich nuclei, 0103 physical sciences, ddc:530, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Short-range correlations, Nuclear theory, Physics, 010308 nuclear & particles physics, technology, industry, and agriculture, 115 Astronomy, Space science, lcsh:QC1-999, Nucleon removal, 3. Good health, biological sciences, Physics::Accelerator Physics, lipids (amino acids, peptides, and proteins), Nucleon, lcsh:Physics
Abstract

Single-neutron and single-proton removal cross sections have been measured for medium-mass neutron-rich nuclei around Z=50 and energies around 1000A MeV using the FRagment Separator (FRS) at GSI. The measured cross sections confirm the relative low values of the proton-removal cross sections, observed since a long time ago and not yet understood. Model calculations considering the knock-out process together with initial- and final-state interactions describe the measured neutron-removal cross sections. Proton-removal cross sections are, however, significantly over-predicted by the same calculations. The observed difference can be explained to a large extent by the knock-out of short-range correlated nucleons from dominant neutron-proton pairs in neutron-rich nuclei.

Published
2020

6. Correlations between emission timescale of fragments and isospin dynamics in ^{124}Sn+^{64}Ni and ^{112}Sn+^{58}Ni reactions at 35A MeV

Author

E. De Filippo, A. Pagano, P. Russotto, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, B. Borderie, R. Bougault, M. Bruno, T. Cap, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D'Agostino, R. Dayras, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, A. Grzeszczuk, P. Guazzoni, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, C. Maiolino, M. Papa, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, K. Schmidt, K. Siwek Wilczyńska, I. Skwira Chalot, A. Trifirò, M. Trimarchi, G. Verde, J. P. Wieleczko, J. Wilczyński, L. Zetta, W. Zipper, LOMBARDO, IVANO, ROSATO, ELIO, VIGILANTE, MARIANO, E. De Filippo, A. Pagano, P. Russotto, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, B. Borderie, R. Bougault, M. Bruno, T. Cap, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D'Agostino, R. Dayra, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, A. Grzeszczuk, P. Guazzoni, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, I. Lombardo, C. Maiolino, M. Papa, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, E. Rosato, K. Schmidt, K. Siwek-Wilczyńska, I. Skwira-Chalot, A. Trifirò, M. Trimarchi, G. Verde, M. Vigilante, J. P. Wieleczko, J. Wilczyński, L. Zetta, W. Zipper, E., De Filippo, A., Pagano, P., Russotto, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, B., Borderie, R., Bougault, M., Bruno, T., Cap, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, M., Di Toro, J., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, A., Grzeszczuk, P., Guazzoni, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, N., Le Neindre, Lombardo, Ivano, C., Maiolino, M., Papa, E., Piasecki, S., Pirrone, R., Płaneta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, K., Schmidt, K., Siwek Wilczyńska, I., Skwira Chalot, A., Trifirò, M., Trimarchi, G., Verde, Vigilante, Mariano, J. P., Wieleczko, J., Wilczyński, L., Zetta, and W., Zipper

Subjects
timescale, isospin, semiperipheral collisions, intermediate mass fragment, isospin migration, HEAVY ION REACTIONS, emission timescale, Nuclear Theory, Nuclear Experiment, fragment emission
Abstract

We present a new experimental method to correlate the isotopic composition of intermediate mass fragments (IMF) emitted at midrapidity in semiperipheral collisions with the emission timescale: IMFs emitted in the early stage of the reaction show larger values of (N/Z) isospin asymmetry, stronger angular anisotropies, and reduced odd-even staggering effects in neutron to proton ratio (N/Z) distributions than those produced in sequential statistical emission. All these effects support the concept of isospin “migration”, that is sensitive to the density gradient between participant and quasispectator nuclear matter, in the so called neck fragmentation mechanism. By comparing the data to a stochastic mean field (SMF) simulation we show that this method gives valuable constraints on the symmetry energy term of nuclear equation of state at subsaturation densities. An indication emerges for a linear density dependence of the symmetry energy.

Published
2012

7. Production of neutron-rich nuclei in fragmentation reactions of Sn132 projectiles at relativistic energies

Author

Andreas Martin Heinz, W. Gawlikowicz, M. Staniou, A. Kelic-Heil, D. Pérez-Loureiro, K. Subotić, V. Föhr, M. Gascon, Strahinja Lukić, Enrique Casarejos, K.-H. Schmidt, K. Sümmerer, B. Blank, A. Trzcińska, Kerttuli Helariutta, J. Benlliure, J. Taieb, L. Pienkowski, H. Alvarez-Pol, D. Dragosavac, and Fernando Montes

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Isotopes of uranium, 010308 nuclear & particles physics, Fission, Nuclear Theory, Fragmentation (computing), 01 natural sciences, Nuclear physics, Uranium-238, 0103 physical sciences, Isotopes of tin, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

The fragmentation of neutron-rich Sn 132 nuclei produced in the fission of U 238 projectiles at 950 A MeV has been investigated at the FRagment Separator (FRS) at GSI. This work represents the first investigation of fragmentation of medium-mass radioactive projectiles with a large neutron excess. The measured production cross sections of the residual nuclei are relevant for the possible use of a two-stage reaction scheme (fission + fragmentation) for the production of extremely neutron-rich medium-mass nuclei in future rare-ion-beam facilities. Moreover, the new data will provide a better understanding of the “memory” effect in fragmentation reactions.

Published
2011

8. Time sequence and time scale of intermediate mass fragment emission

Author

E. La Guidara, A. Chbihi, G. Vannini, M. Bruno, R. Bougault, M. Trimarchi, G. Cardella, M. L. Sperduto, I. Berceanu, S. Pirrone, M.F. Rivet, K. Schmidt, J.D. Frankland, M. B. Chatterjee, J.P. Wieleczko, B. Borderie, G. Lanzano, W. Zipper, N. Le Neindre, P. Guazzoni, L. Swiderski, E. Galichet, F. Rizzo, A. Trifirò, E. Geraci, Aldo Bonasera, S. Cavallaro, E. Piasecki, D. Guinet, C. Maiolino, S. M. Li, R. Dayras, F. Giustolisi, S. Russo, J. Blicharska, J. Cibor, Mihai Petrovici, F. Amorini, M. Papa, S. Kowalski, Maria Colonna, W. Gawlikowicz, M. D'Agostino, F. Porto, M. Sassi, P. Russotto, J. Wilczynski, Lucrezia Auditore, R. Planeta, G. Politi, Angelo Pagano, A. Grzeszczuk, Mariano Vigilante, Amalia Pop, G. Lanzalone, M. Di Toro, Zhigang Xiao, V. Baran, A. Anzalone, H. Wu, K. Siwek-Wilczyńska, E. De Filippo, I. Skwira, M. Iacono-Manno, E. Rosato, L. Zetta, Z. Majka, J. Brzychczyk, 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), 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), 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), E., DE FILLIPPO, A., Pagano, J., Wilczynski, F., Amorini, A., Anzalone, N., Arena, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, A., Bonasera, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B. CHATTERJEE A., Chbihi, J., Cibor, M., Colonna, M., D'Agostino, R., Dayra, M., DI TORO, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., IACONO MANNO, S., Kowalski, E., LA GUIDARA, G., Lanzan, G., Lanzalone, N., LE NEINDRE, S., Li, C., Maiolino, Z., Majka, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, M., Sassi, G., Schmidt, K., SIWEK WILCZYNSKA, I., Skwira, M. L., Sperduto, L., Swiderski, A., Trifir, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, H., Wu, Z., Xiao, L., Zetta, W., Zipper, 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), 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)-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 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. De Filippo, A. Pagano, J. Wilczy´nski, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, J. Cibor, M. Colonna, M. D Agostino, R. Dayra, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono-Manno, S. Kowalski, E. La Guidara, G. Lanzano', G. Lanzalone, N. Le Neindre, S. Li, C. Maiolino, Z. Majka, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. PBaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, E. Rosato, F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek-Wilczy´nska, I. Skwira, M. L. Sperduto, A. ´ Swiderski, A. Trifiro', M. Trimarchi, G. Vannini, M. Vigilante, J. P. Wieleczko, H. Wu, Z. Xiao, L. Zetta, and W. Zipper.

Subjects
Physics, Nuclear and High Energy Physics, Reaction mechanism, 010308 nuclear & particles physics, Relative velocity, Time sequence, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, 25.70.Mn, 25.70.Pq, Fragmentation (mass spectrometry), 0103 physical sciences, Heavy ion, Ion emission, Atomic physics, 010306 general physics, Nucleon, Ternary operation
Abstract

Matière Nucléaire NIM; Semiperipheral collisions in the $^{124}$Sn+${64}Ni reaction at 35 MeV/nucleon were studied using the forward part of the Charged Heavy Ion Mass and Energy Resolving Array. Nearly completely determined ternary events involving projectilelike fragments (PLF), targetlike fragments (TLF), and intermediate mass fragments (IMF) were selected. A new method of studying the reaction mechanism, focusing on the analysis of the correlations between relative velocities in the IMF+PLF and IMF+TLF subsystems, is proposed. The relative velocity correlations provide information on the time sequence and time scale of the neck fragmentation processes leading to production of IMFs. It is shown that the majority of light IMFs are produced within 40–80 fm/c after the system starts to reseparate. Heavy IMFs are formed at times of about 120 fm/c or later and can be viewed as resulting from two-step (sequential) neck rupture processes.

Published
2005

9. Production cross sections for intermediate mass fragments from dynamical and statistical decay of projectile-like fragments inSn124+Ni64andSn112+Ni58collisions at35AMeV

Author

J.D. Frankland, M. Trimarchi, P. Russotto, E. V. Pagano, M. D'Agostino, M. B. Chatterjee, S. Pirrone, A. Chbihi, R. Bougault, K. Siwek-Wilczyńska, C. Maiolino, E. Galichet, E. De Filippo, G. Politi, S. Kowalski, F. Porto, W. Zipper, Giuseppe Verde, N. Le Neindre, I. Berceanu, W. Gawlikowicz, G. Lanzalone, J. Wilczynski, L. Acosta, M. Bruno, L. Quattrocchi, G. Lanzano, L. Zetta, G. Cardella, A. Grzeszczuk, Mariano Vigilante, P. Guazzoni, Maria Colonna, Angelo Pagano, M. Papa, E. Piasecki, Triestino Minniti, T. Cap, Elio Rosato, M. Di Toro, F. Rizzo, Ivano Lombardo, V. Baran, B. Gnoffo, I. Skwira-Chalot, B. Borderie, M.F. Rivet, Antonio Trifiro, L. Francalanza, S. Cavallaro, Lucrezia Auditore, K. Schmidt, R. Płaneta, E. Geraci, and J.P. Wieleczko

Subjects
Physics, Nuclear and High Energy Physics, Reaction mechanism, Astrophysics::High Energy Astrophysical Phenomena, Production (computer science), Astrophysics::Cosmology and Extragalactic Astrophysics, Sensitivity (control systems), Atomic physics, Nuclear Experiment, 7. Clean energy, Astrophysics::Galaxy Astrophysics, Energy (signal processing), Charged particle
Abstract

Background: In heavy-ion collisions at intermediate energies the production of light charged particles and intermediate mass fragments (IMFs) is due to different reaction mechanisms and different time scales, ranging from fast dynamical processes to statistical emission from the equilibrated system.Purpose: We compare the IMF statistical and dynamical emission probabilities in collisions of a neutron-rich $^{124}\mathrm{Sn}+^{64}\mathrm{Ni}$ system and a neutron-poor $^{112}\mathrm{Sn}+^{58}\mathrm{Ni}$ system at the laboratory energy of 35 $A$ MeV.Method: The IMFs production mechanism in semiperipheral reactions has been investigated in our previous works. In this paper, the analysis is expanded for the same set of data and production cross sections have been evaluated for dynamical and statistical emission in a coherent way for light and heavy fragments.Results: The data analysis has evidenced a strong competition between dynamical and statistical emission mechanisms. Probability of the dynamical emission of IMFs is strongly influenced by the ($N/Z$) ratio of the colliding system.Conclusions: It is demonstrated that the statistical emission is equally probable for the two systems, while the dynamical emission is enhanced for the neutron-rich system, especially for heavy fragments ($Z\ensuremath{\ge}6$). The observed effect points at a high sensitivity of the prompt-dynamical emission to the ($N/Z$) ratio of a given system.

Published
2015

10. Fragmentation studies with the CHIMERA detector at LNS in Catania: recent progress

Author

H. Wu, L. Auditore, J. Blicharska, M. Papa, G. Vannini, M. Trimarchi, S. M. Li, L. Zetta, Z. Majka, Angelo Pagano, S. Lo Nigro, M. L. Sperduto, T. Paduszynski, G. Lanzalone, G. Lanzanó, A. Chbihi, I. Skwira, M. Iacono-Manno, E. La Guidara, M.F Rivet, M. Bruno, J.P. Wieleczko, K. Siwek-Wilczyńska, Maria Colonna, R. Bougault, G.R. Sechi, E. Rosato, Monica Alderighi, Amalia Pop, V. Simion, J. Cibor, N. Le Neindre, J.C. Steckmeyer, F. Rizzo, F. Porto, E. De Filippo, L. Swiderski, P. Russotto, A. Anzalone, V. Baran, Zhigang Xiao, M. Bartolucci, R. Planeta, M. D'Agostino, J. Wilczynski, M. Di Toro, A. Bonasera, P. Guazzoni, A. Grzeszczuk, R. Dayras, S. Cavallaro, I. Berceanu, S. Russo, E. Geraci, F. Giustolisi, B. Borderie, J. Brzychczyk, M. Sassi, S. Kowalski, W. Gawlikowicz, E. Piasecki, A. Trifiro, Mariano Vigilante, G. Politi, L. Arena, S. Pirrone, W. Zipper, D. Guinet, G. Cardella, G. Manfredi, F. Amorini, C. Maiolino, M. Petrovici, M. B. Chatterjee, 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), 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), A. Pagano, M. Alderighi, F. Amorini, A. Anzalone, L. Arena, L. Auditore, V. Baran, M. Bartolucci, I. Berceanu, J. Blicharska, J.Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, M. Bruno, G.Cardella, S. Cavallaro, M.B. Chatterjee, A. Chbihi, J. Cibor, M.Colonna, M. D'Agostino, R. Dayra, E. De Filippo, M. Di Toro, W.Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D.Guinet, M. Iacono-Manno, S. Kowalski, E. La Guidara, G. Lanzano', G.Lanzalone, N.Le Neindre, S. Li, S. Lo Nigro, C. Maiolino, Z. Majka, G. Manfredi, T. Paduszynski, M. Papa, M. Petrovici, E. Piasecki, S.Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M.F. Rivet, E. Rosato, F. Rizzo, S. Russo, P. Russotto, M. Sassi, G. Sechi, V. Simion, K. Siwek-Wilczynska, I. Skwira, M.L. Sperduto, J.C. Steckmeyer, L. Swiderski, A. Trifiro`, M. Trimarchi, G. Vannini, M. Vigilante, J.P. Wieleczko, J. Wilczynski, H. Wu, Z. Xiao, L. Zetta, W. Zipper, 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
Nuclear reaction, Nuclear and High Energy Physics, APPARATO DI RIVELAZIONE, TECNICHE DI IDENTIFICAZIONE, REAZIONI NUCLEARI SEMI-PERIFERICHE, PRODUZIONE DI FRAMMENTI DI MASSA INTERMEDIA, TEMPI DI PRODUZIONE DEI FRAMMENTI, Cyclotron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Particle identification, law.invention, Ion, Nuclear physics, law, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Detector, Charged particle, Time of flight, Nucleon
Abstract

The new detector CHIMERA, in its final 4π configuration, has been installed at Laboratori Nazionali del Sud (LNS) in Catania in January 2003. Beams of different energies ranging from protons to Au ions were delivered by the Tandem and the Super Conducting Cyclotron for nuclear reaction studies, in agreement with the approval of the Scientific Advisory Committee of LNS. Recent experimental results confirm very low energy thresholds of the trigger (below 0.5 MeV/nucleon), ensured within a wide dynamical range. Good characteristics of identification of light charged particles and heavy fragments have been obtained by using three detection techniques: Δ E-E , Δ E -time of flight, and the Pulse-Shape discrimination method. We present results of recent analysis concerning the production of intermediate mass fragments (IMF) in semi-peripheral collisions. Our results combined with theoretical Boltzmann-Nordheim-Vlasov simulations clearly demonstrate the presence of very fast processes of IMF production in the overlapping region of the target and projectile nuclei during re-separation, i.e. in the time scale comparable with the collision time. Evidence for slower, sequential-like production of IMF's is also shown.

Published
2004

11. Strong enhancement of dynamical emission of heavy fragments in the neutron rich 124Sn+64Ni reaction at 35 AMeV

Author

P. Russotto, E. De Filippo, A. Pagano, E. Piasecki, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D'Agostino, R. Dayras, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, C. Maiolino, Z. Majka, M. Papa, M. Petrovici, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet1, F. Rizzo, K. Schmidt, K. Siwek Wilczyńska, I. Skwira Chalot, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, J. P. Wieleczko, J. Wilczyński, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, P., Russotto, E., De Filippo, A., Pagano, E., Piasecki, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, M., Di Toro, J., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, N., Le Neindre, C., Maiolino, Z., Majka, M., Papa, M., Petrovici, S., Pirrone, R., Płaneta, G., Politi, A., Pop, F., Porto, M. F., Rivet1, Rosato, Elio, F., Rizzo, K., Schmidt, K., Siwek Wilczyńska, I., Skwira Chalot, A., Sochocka, L., Swiderski, A., Trifirò, M., Trimarchi, Vigilante, Mariano, J. P., Wieleczko, J., Wilczyński, L., Zetta, and W., Zipper

Subjects
isospin, fisica nucleare, reazioni nucleari
Abstract

A quantitative comparison is made between the absolute cross sections associated with statistical and dynamical emission of heavy fragments in the 124Sn+64Ni and 112Sn+58Ni collisions experimentally investigated at 35A MeV beam energy using the multidetector CHIMERA. The result shows that the dynamical process is about twice as probable in the neutron-rich 124Sn+64Ni system as in the 112Sn+58Ni neutron-poor one. This unexpected and significant difference indicates that the reaction mechanism is strongly dependent on the entrance-channel isospin (N/Z) content.

Published
2010

12. Reaction dynamics and 'hierarchy' effects from light particle correlations

Author

E. De Filippo, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, B. Borderie, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayras, M. Di Toro, U. Emanuele, J. D. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, L. Grassi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, I. Lombardo, C. Maiolino, Z. Majka, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, P. Russotto, K. Schmidt, K. Siwek Wilczynska, I. Skwira, A. Trifirò, M. Trimarchi, G. Verde, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, J.D.Frankland, A.Pagano, S.Pirrone, M.F.Rivet, F.Rizzo, E., De Filippo, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, B., Borderie, R., Bougault, M., Bruno, J., Brzychczyk, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D’Agostino, R., Dayra, M., Di Toro, U., Emanuele, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, L., Grassi, A., Grzeszczuk, P., Guazzoni, D., Guinet, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, N., Le Neindre, I., Lombardo, C., Maiolino, Z., Majka, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, Rosato, Elio, F., Rizzo, P., Russotto, K., Schmidt, K., Siwek Wilczynska, I., Skwira, A., Trifirò, M., Trimarchi, G., Verde, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2010

13. A calibration method for phoswich detectors

Author

W. U. Schröder, Jan Toke, and W. Gawlikowicz

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Detector, Calibration, Atomic number, Scintillator, Instrumentation, Signal, Particle identification, Energy (signal processing), Computational physics
Abstract

A new method of particle identification and energy calibration is proposed for phoswich detectors consisting of a fast plastic scintillator optically coupled to a CsI(Tl) crystal. In this method, functional relationships between integrated yields of three properly selected portions of the observed composite light output signal are parameterized in terms of three physical components (overlapping in time) of this signal. Then, a complete set of calibration constants is derived, linking these integrated partial yields to particle atomic numbers ( Z ) and energies ( E ). The calibration is based on the correlations between partial yields observed in actual data from the physics or “production” runs, and energy deposits calculated for detector elements. The method is found suitable for a wide range of incident particle species and energies, largely eliminating the need for costly and time-consuming conventional calibration experiments with a variety of beams, targets, and bombarding energies.

Published
2002

15. Isospin Effects in Heavy-Ion Collisions: Some Results From CHIMERA Experiments At LNS And Perspectives With Radioactive Beams

Author

G. Cardella, F. Amorini, A. Anzalone, N. Arena, L. Auditore, R. Barnà, A. Benisz, I. Berceanu, M. B. Chatterjee, S. Cavallaro, E. De Filippo, U. Emanuele, W. Gawlikowicz, E. Geraci, L. Grassi, G. Giuliani, A. Grzeszczuk, P. Guazzoni, S. Kowalski, E. La Guidara, G. Lanzalone, I. Lombardo, S. Lo Nigro, D. Loria, C. Maiolino, N. G. Nicolis, A. Pagano, M. Papa, I. Pawelczak, M. Petrovici, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, F. Previdi, M. Quinlan, F. Rizzo, E. Rosato, P. Russotto, W. U. Schrőder, I. Skwira-Chalot, K. Siwek-Wilczynska, K. Schmidt, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, J. Tõke, G. Verde, M. Vigilante, J. Wilczynski, L. Zetta, W. Zipper, Sun-Chan Jeong, Yutaka Utsuno, Tohru Motobayashi, Angela Bracco, S.C.Jeong,Y.Utsuno, T.Motobayashi, A.Bracco, G., Cardella, F., Amorini, A., Anzalone, N., Arena, L., Auditore, R., Barnà, A., Benisz, I., Berceanu, M. B., Chatterjee, S., Cavallaro, E., De Filippo, U., Emanuele, W., Gawlikowicz, E., Geraci, L., Grassi, G., Giuliani, A., Grzeszczuk, P., Guazzoni, S., Kowalski, E., La Guidara, G., Lanzalone, I., Lombardo, S., Lo Nigro, D., Loria, C., Maiolino, N. G., Nicoli, A., Pagano, M., Papa, I., Pawelczak, M., Petrovici, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, F., Previdi, M., Quinlan, F., Rizzo, Rosato, Elio, P., Russotto, W. U., Schr?der, I., Skwira Chalot, K., Siwek Wilczynska, K., Schmidt, A., Sochocka, L., Swiderski, A., Trifirò, M., Trimarchi, J., Toke, G., Verde, Vigilante, Mariano, J., Wilczynski, L., Zetta, and W., Zipper

Subjects
Physics, Particle physics, Field (physics), Nuclear Theory, Physics::Medical Physics, Detector, Nuclear structure, Scintillator, Charged particle, Nuclear physics, Settore ING-INF/04 - Automatica, Isospin, Heavy ion, Nuclear Experiment, Spin (physics)
Abstract

CHIMERA is a 4π multidetector for charged particles available at Laboratori Nazionali del Sud (INFN‐LNS). A new method to measure the time scale of the emission of nuclear fragments is described, together with some applications in the field of the isospin dynamics of heavy‐ion collisions. Competition between fusion‐like and binary reactions near the energy threshold for nuclear multifragmentation is discussed. Opportunities are pointed out to use the detector at low and intermediate energies using the kinematical‐coincidence method.

Published
2009

16. Isospin effects in projectile-like dynamical fission for 112-124Sn + 58-64Ni reactions at 35 a MeV

Author

P. Russotto, E. De Filippo, A. Pagano, E. Piasecki, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, B. Borderie, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayras, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, C. Maiolino, Z. Majka, M. Papa, M. Petrovici, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, K. Schmidt, K. Siwek Wilczynska, I. Skwira Chalot, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, Audrey Chatillon, Herbert Faust, Gabriele Fioni, Dominique Goutte, Héloise Goutte, P., Russotto, E., De Filippo, A., Pagano, E., Piasecki, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, B., Borderie, R., Bougault, M., Bruno, J., Brzychczyk, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D’Agostino, R., Dayra, M., Di Toro, J., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, N., Le Neindre, C., Maiolino, Z., Majka, M., Papa, M., Petrovici, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, Rosato, Elio, F., Rizzo, K., Schmidt, K., Siwek Wilczynska, I., Skwira Chalot, A., Sochocka, L., Swiderski, A., Trifirò, M., Trimarchi, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Subjects
nuclear fission, nucleus-nucleus collision, multidetectors, Isospin, nuclear physic
Published
2009

17. PLF fragmentation in the 40Ca+40Ca reaction at 35 MeV/nucleon

Author

D. Heuer, D. Benchekroun, A. Wieloch, A.J. Cole, A. Chabane, M. Charvet, Brigitte Cheynis, J.B. Viano, R. Płaneta, A. Demeyer, A. Giorni, W. Gawlikowicz, E. Bisquer, J. Brzychczyk, L. Vagneron, K. Grotowski, Z. Sosin, Piotr Pawłowski, P. Lautesse, P. Désesquelles, Annick Lleres, L. Lebreton, E. Gerlic, S. Micek, D. Guinet, P. Hachaj, and M. Stern

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Fragmentation (mass spectrometry), Nucleon
Published
2001

18. Centrality dependence of isospin effect signatures in 124Sn+64Ni and 112Sn+58Ni reactions

Author

R. Planeta, F. Amorini, A. Anzalone, L. Auditore, V. Baran, A. Benisz, I. Berceanu, B. Borderie, J. Borgenstajn, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D'Agostino, R. Dayras, E. De Filippo, M. Di Toro, J. D. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, M. Krauze, E. La Guidara, G. Lanzanò, G. Lanzalone, N. Le Neindre, J. Lukasik, C. Maiolino, Z. Majka, N. G. Nikolis, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, P. Russotto, K. Schmidt, K. Siwek Wilczynska, I. Skwira Chalot, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, G. Vannini, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, R., Planeta, F., Amorini, A., Anzalone, L., Auditore, V., Baran, A., Benisz, I., Berceanu, B., Borderie, J., Borgenstajn, R., Bougault, M., Bruno, J., Brzychczyk, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, E., De Filippo, M., Di Toro, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, G., Giuliani, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, S., Kowalski, M., Krauze, E., La Guidara, G., Lanzanò, G., Lanzalone, N., Le Neindre, J., Lukasik, C., Maiolino, Z., Majka, N. G., Nikoli, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, P., Russotto, K., Schmidt, K., Siwek Wilczynska, I., Skwira Chalot, A., Sochocka, L., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2008

19. Investigation of the isospin dependances in Sn+Ni and Sn+Al systems

Author

K. Schmidt, F. Amorini, A. Anzalone, L. Auditore, V. Baran, A. Benisz, I. Berceanu, A. Bonasera, B. Borderie, J. Borgenstajn, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, R. Coniglione, B. Chatterjee A. Chbihi, M. Colonna, M. D'Agostino, R. Dayras, E. De Filippo, M. Di Toro, J. D. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, J. Lukasik, C. Maiolino, Z. Majka, N. G. Nicolis, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, S. Russo, P. Russotto, K. Siwek Wilczynska, I. Skwira Chalot, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, G. Vannini, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, B.Borderie, J.D.Frankland, A.Pagano, S.Pirrone, F.Rizzo, K., Schmidt, F., Amorini, A., Anzalone, L., Auditore, V., Baran, A., Benisz, I., Berceanu, A., Bonasera, B., Borderie, J., Borgenstajn, R., Bougault, M., Bruno, J., Brzychczyk, G., Cardella, S., Cavallaro, R., Coniglione, B. Chatterjee A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, E., De Filippo, M., Di Toro, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, G., Giuliani, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, N., Le Neindre, J., Lukasik, C., Maiolino, Z., Majka, N. G., Nicoli, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, Rosato, Elio, F., Rizzo, S., Russo, P., Russotto, K., Siwek Wilczynska, I., Skwira Chalot, A., Sochocka, L., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2008

20. Dynamical emission in 112-124Sn + 58-64Ni reactions at 35 a MeV as seen in CHIMERA

Author

P. Russotto, E. Piasecki, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, B. Chatterjee A. Chbihi, M. Colonna, M. D'Agostino, R. Dayras, E. De Filippo, M. Di Toro, J. D. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, C. Maiolino, Z. Majka, A. Pagano, M. Papa, M. Petrovici, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, K. Schmidt, K. Siwek Wilczynska, I. Skwira Chalot, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, B.Borderie, J.D.Frankland, A.Pagano, S.Pirrone, F.Rizzo, P., Russotto, E., Piasecki, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, B. Chatterjee A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, E., De Filippo, M., Di Toro, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, N., Le Neindre, C., Maiolino, Z., Majka, A., Pagano, M., Papa, M., Petrovici, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, Rosato, Elio, F., Rizzo, K., Schmidt, K., Siwek Wilczynska, I., Skwira Chalot, A., Sochocka, L., Swiderski, A., Trifirò, M., Trimarchi, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2008

21. Present and future activity with the CHIMERA 4π detector

Author

G. Cardella, C. Agodi, F. Amorini, A. Anzalone, N. Arena, L. Auditore, R. Barnà, A. Benisz, I. Berceanu, S. Cavallaro, E. De Filippo, U. Emanuele, W. Gawlikowicz, L. Grassi, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, S. Kowalski, E. La Guidara, G. Lanzalone, I. Lombardo, S. Lo Nigro, D. Loria, C. Maiolino, N. G. Nicolis, A. Pagano, M. Papa, I. Pawelczak, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, F. Previdi, M. Quinlan, F. Rizzo, P. Russotto, U. Schroder, I. Skwira Chalot, V. Sipala, K. Siwek Wilczynska, K. Schmidt, M. L. Sperduto, A. Sochocka, M. Stiro, Ł. Swiderski, A. Trifirò, M. Trimarchi, J. Toke, G. Verde, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, B.Borderie, J.D.Frankland, A.Pagano, S.Pirrone, F.Rizzo, G., Cardella, C., Agodi, F., Amorini, A., Anzalone, N., Arena, L., Auditore, R., Barnà, A., Benisz, I., Berceanu, S., Cavallaro, E., De Filippo, U., Emanuele, W., Gawlikowicz, L., Grassi, G., Giuliani, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, S., Kowalski, E., La Guidara, G., Lanzalone, I., Lombardo, S., Lo Nigro, D., Loria, C., Maiolino, N. G., Nicoli, A., Pagano, M., Papa, I., Pawelczak, M., Petrovici, E., Piasecki, S., Pirrone, R., Płaneta, G., Politi, A., Pop, F., Porto, F., Previdi, M., Quinlan, F., Rizzo, Rosato, Elio, P., Russotto, U., Schroder, I., Skwira Chalot, V., Sipala, K., Siwek Wilczynska, K., Schmidt, M. L., Sperduto, A., Sochocka, M., Stiro, Ł., Swiderski, A., Trifirò, M., Trimarchi, J., Toke, G., Verde, Vigilante, Mariano, J., Wilczynski, L., Zetta, and W., Zipper

Published
2007

22. Dynamical multi-breakup processes in the 124Sn+64Ni system at 35 MeV/nucleon

Author

M. Papa, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, R. Dayras, E. De Filippo, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzano', C. Maiolino, Z. Majka, N. Le Neindre, A. Pagano, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, F. Rizzo, E. Rosato, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek Wilczynska, I. Skwira, A. Sochocka, L. Swiderski, A. Trifiro', M. Trimarchi, G. Verde, M. Vigilante, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, GERACI, ELENA IRENE, VANNINI, GIANNI, 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), 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), Istituto Nazionale di Fisica Nucleare, Sezione di Catania (INFN), Università degli studi di Catania [Catania], 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), 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), 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), Università degli studi di Catania = University of Catania (Unict), 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), M. Papa, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, R. Dayra, E. De Filippo, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono-Manno, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzano', C. Maiolino, Z. Majka, N. Le Neindre, A. Pagano, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, F. Rizzo, E. Rosato, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek-Wilczynska, I. Skwira, A. Sochocka, L. Swiderski, A. Trifiro', M. Trimarchi, G. Vannini, G. Verde, M. Vigilante, J. P. Wieleczko, J. Wilczynski, L. Zetta, and W. Zipper

Subjects
BREAK-UP, 25.70.Mn, 24.10.Cn, 25.70.Pq, MOLECULAR DYNAMICS, EXPERIMENT, HEAVY-ION COLLISIONS, FISSION, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; Multi-breakup processes for the $^{124}$Sn+$^{64}$Ni system at 35 MeV/nucleon have been studied with the forward part of the CHIMERA detector. An extensive comparison between experimental data corresponding to almost complete ternary events and constrained molecular dynamics (CoMD-II) calculations suggests different characteristic times in the selected processes. This is in agreement with previous studies of the same reaction already published concerning the prompt intermediate-mass-fragment emission. Stimulated by CoMD-II calculations, we investigate the existence of more complex dynamical multi-breakup processes occurring on the same time scale. A detailed study of the rotational dynamics leading to slower dynamical fission processes is also presented.

Published
2007

23. Isospin effects studied with the CHIMERA dertector at 35 MeV/nucleon

Author

R. Planeta, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, M. B. Chatterjee A. Chbihi, M. Colonna, M. D'Agostino, E. De Filippo, R. Dayras, M. Di Toro, J. D. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, E. La Guidara, G. Lanzanò, G. Lanzalone, J. Lukasik, C. Maiolino, Z. Majka, N. Le Neindre, N. G. Nicolis, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek Wilczynska, I. Skwira Chalot, A. Sochocka, M. L. Sperduto, L. Swiderski, A. Trifirò, M. Trimarchi, G. Vannini, G. Verde, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, R., Planeta, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B. Chatterjee A., Chbihi, M., Colonna, M., D'Agostino, E., De Filippo, R., Dayra, M., Di Toro, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., Iacono Manno, S., Kowalski, E., La Guidara, G., Lanzanò, G., Lanzalone, J., Lukasik, C., Maiolino, Z., Majka, N., Le Neindre, N. G., Nicoli, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, M., Sassi, K., Schmidt, K., Siwek Wilczynska, I., Skwira Chalot, A., Sochocka, M. L., Sperduto, L., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, G., Verde, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2006

24. Identification of 8Be isotopes in the CsI of CHIMERA detector

Author

W. Zipper, J. Blicharska, A. Grzeszczuk, M. Krauze, A. Stasz, M. Alderighi, A. Anzalone, L. Auditore, R. Barnà, V. Baran, I. Berceanu, M. Bartolucci, A. Bonasera, B. Borderie, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayras, E. De Filippo, D. De Pasquale, M. Di Toro, W. Gawlikowicz, E. Geraci, F. Giustolisi, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, A. Italiano, E. La Guidara, G. Lanzanò, G. Lanzalone, N. Le Neindre, S. Li, S. Lo Nigro, C. Maiolino, Z. Majka, G. Manfredi, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, R. Russo, P. Russotto, K. Schmidt, G. Sechi, V. Simion, M. L. Sperduto, J. C. Steckmeyer, A. Trifirò, M. Trimarchi, G. Vannini, J. P. Wieleczko, J. Wilczynski, H. Wu, X. Ziao, L. Zetta, ROSATO, ELIO, VIGILANTE, MARIANO, R.Bougault, A.Pagano, S.Pirrone, M.F.Rivet e F.Rizzo, W., Zipper, J., Blicharska, A., Grzeszczuk, M., Krauze, A., Stasz, M., Alderighi, A., Anzalone, L., Auditore, R., Barnà, V., Baran, I., Berceanu, M., Bartolucci, A., Bonasera, B., Borderie, R., Bougault, M., Bruno, J., Brzychczyk, G., Cardella, S., Cavallaro, A., Chbihi, M., Colonna, M., D’Agostino, R., Dayra, E., De Filippo, D., De Pasquale, M., Di Toro, W., Gawlikowicz, E., Geraci, F., Giustolisi, P., Guazzoni, D., Guinet, M., Iacono Manno, S., Kowalski, A., Italiano, E., La Guidara, G., Lanzanò, G., Lanzalone, N., Le Neindre, S., Li, S., Lo Nigro, C., Maiolino, Z., Majka, G., Manfredi, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Płaneta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, R., Russo, P., Russotto, K., Schmidt, G., Sechi, V., Simion, M. L., Sperduto, J. C., Steckmeyer, A., Trifirò, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, H., Wu, X., Ziao, and L., Zetta

Published
2006

25. Dynamical fission in the Sn+Ni interaction at 35 AMeV

Author

P. RUSSOTTO, E. PIASECKI, F. AMORINI, A. ANZALONE, L. AUDITORE, V. BARAN, I. BERCEANU, J. BLICHARSKA, J. BRZYCHCZYK, B. BORDERIE, R. BOUGAULT, M. BRUNO, G. CARDELLA, S. CAVALLARO, R. CONIGLIONE, M. B. CHATTERJEE A. CHBIHI, M. COLONNA, M. D'AGOSTINO, R. DAYRAS, E. DE FILIPPO, M. DI TORO, J. D. FRANKLAND, E. GALICHET, W. GAWLIKOWICZ, E. GERACI, F. GIUSTOLISI, A. GRZESZCZUK, P. GUAZZONI, D. GUINET, M. IACONO MANNO, S. KOWALSKI, E. LA GUIDARA, G. LANZALONE, G. LANZAN, N. LE NEINDRE, C. MAIOLINO, Z. MAJKA, A. PAGANO, M. PAPA, M. PETROVICI, S. PIRRONE, R. PLANETA, G. POLITI, A. POP, F. PORTO, M. F. RIVET, F. RIZZO, S. RUSSO, M. SASSI, K. SCHMIDT, K. SIWEK WILCZYNSKA, I. SKWIRA, M. L. SPERDUTO, A. SOCHOCKA, L. SWIDERSKI, A. TRIFIR, M. TRIMARCHI, G. VANNINI, VIGILANTE, MARIANO, J. P. WIELECZKO, J. WILCZYNSKI, L. ZETTA AND W. ZIPPER, ROSATO, ELIO, P., Russotto, E., Piasecki, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, R., Coniglione, M. B. CHATTERJEE A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, E., DE FILIPPO, M., DI TORO, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., IACONO MANNO, S., Kowalski, E., LA GUIDARA, G., Lanzalone, G., Lanzan, N., LE NEINDRE, C., Maiolino, Z., Majka, A., Pagano, M., Papa, M., Petrovici, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, M., Sassi, K., Schmidt, K., SIWEK WILCZYNSKA, I., Skwira, M. L., Sperduto, A., Sochocka, L., Swiderski, A., Trifir, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, and L. ZETTA AND W., Zipper

Published
2006

26. Isoscaling in neck fragmentation

Author

E. DE FILIPPO, F. AMORINI, A. ANZALONE, L. AUDITORE, V. BARAN, I. BERCEANU, J. BLICHARSKA, J. BRZYCHCZYK, B. BORDERIE, R. BOUGAULT, M. BRUNO, G. CARDELLA, S. CAVALLARO, M. B. CHATTERJEE A. CHBIHI, M. COLONNA, M. D'AGOSTINO, R. DAYRAS, M. DI TORO, J. D. FRANKLAND, E. GALICHET, W. GAWLIKOWICZ, E. GERACI, F. GIUSTOLISI, A. GRZESZCZUK, P. GUAZZONI, D. GUINET, M. IACONO MANNO, S. KOWALSKI, E. LA GUIDARA, G. LANZALONE, G. LANZAN, N. LE NEINDRE, C. MAIOLINO, Z. MAJKA, N. G. NICOLIS, A. PAGANO, M. PAPA, M. PETROVICI, E. PIASECKI, S. PIRRONE, R. PLANETA, G. POLITI, A. POP, F. PORTO, M. F. RIVET, F. RIZZO, S. RUSSO, P. RUSSOTTO, D. SANTONOCITO, P. SAPIENZA, M. SASSI, K. SCHMIDT, K. SIWEK WILCZYNSKA, I. SKWIRA, M. L. SPERDUTO, A. SOCHOCKA, L. SWIDERSKI, A. TRIFIR, M. TRIMARCHI, G. VANNINI, G. VERDE, VIGILANTE, MARIANO, J. P. WIELECZKO, J. WILCZYNSKI, L. ZETTA E. W. ZIPPER, ROSATO, ELIO, E., DE FILIPPO, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B. CHATTERJEE A., Chbihi, M., Colonna, M., D'Agostino, R., Dayra, M., DI TORO, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., IACONO MANNO, S., Kowalski, E., LA GUIDARA, G., Lanzalone, G., Lanzan, N., LE NEINDRE, C., Maiolino, Z., Majka, N. G., Nicoli, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, D., Santonocito, P., Sapienza, M., Sassi, K., Schmidt, K., SIWEK WILCZYNSKA, I., Skwira, M. L., Sperduto, A., Sochocka, L., Swiderski, A., Trifir, M., Trimarchi, G., Vannini, G., Verde, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, and L. ZETTA E. W., Zipper

Published
2006

27. Dynamic multi-break processes in the 124Sn+64Ni at 35 Mev/nucleon and the CoMD-II calculations

Author

M. Papa, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayras, E. De Filippo, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, C. Maiolino, Z. Majka, N. Le Neindre, A. Pagano, M. Petrovici, E. Piasecki, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek Wilczynska, I. Skwira, A. Sochockas, Ł. Swiderski, A. Trifirò, M. Trimarchi, G. Vannini, G. Verde, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Z.i.p.p.e.r. ., ROSATO, ELIO, VIGILANTE, MARIANO, R.Bougault, A.Pagano, S.Pirrone, M.F.Rivet e F.Rizzo, M., Papa, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, A., Bonasera, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D’Agostino, R., Dayra, E., De Filippo, M., Di Toro, J., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, G., Giuliani, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., Iacono Manno, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, C., Maiolino, Z., Majka, N., Le Neindre, A., Pagano, M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, M., Sassi, K., Schmidt, K., Siwek Wilczynska, I., Skwira, A., Sochocka, Ł., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, G., Verde, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W. Z. i. p. p. e. r., .

Published
2006

28. Study of the quasi projectile in the 124Sn+64Ni and 112Sn+58Ni reactions

Author

E. Galichet, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayras, E. De Filippo, M. Di Toro, J. Frankland, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, C. Maiolino, Z. Majka, N. Le Neindre, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek Wilczynska, I. Skwira, A. Sochockas, Ł. Swiderski, A. Trifirò, M. Trimarchi, G. Vannini, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, R.Bougault, A.Pagano, S.Pirrone, M.F.Rivet e F.Rizzo, E., Galichet, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, M., Colonna, M., D’Agostino, R., Dayra, E., De Filippo, M., Di Toro, J., Frankland, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., Iacono Manno, S., Kowalski, E., La Guidara, G., Lanzalone, G., Lanzanò, C., Maiolino, Z., Majka, N., Le Neindre, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Płaneta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, M., Sassi, K., Schmidt, K., Siwek Wilczynska, I., Skwira, A., Sochocka, Ł., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2006

29. Fragment-fragment correlation in the nuclear reaction 124Sn+64Ni at 35A MeV with CHIMERA

Author

C. Maiolino, C. Agodi, R. Alba, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzy chczyk, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, R. Coniglione, M. B. Chatterjee, A. Chbihi, J. Cibor, M. Colonna, M. D’Agostino, E. De Filippo, R. Dayras, A. Del Zoppo, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, E. La Guidara, G. Lanzanò, G. Lanzalone, N. Le Neindre, Z. Majka, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, F. Rizzo, S. Russo, P. Russotto, D. Santonocito, P. Sapienza, M. Sassi, K. Schmidt, K. Siwek Wilczynska, I. Skwira, M. L. Sperduto, Ł. Swiderski, A. Trifirò, M. Trimarchi, G. Vannini, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, ROSATO, ELIO, VIGILANTE, MARIANO, I.Iori, A.Bortolotti, C., Maiolino, C., Agodi, R., Alba, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzy chczyk, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, R., Coniglione, M. B., Chatterjee, A., Chbihi, J., Cibor, M., Colonna, M., D’Agostino, E., De Filippo, R., Dayra, A., Del Zoppo, M., Di Toro, J., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., Iacono Manno, S., Kowalski, E., La Guidara, G., Lanzanò, G., Lanzalone, N., Le Neindre, Z., Majka, A., Pagano, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Płaneta, G., Politi, A., Pop, F., Porto, M. F., Rivet, Rosato, Elio, F., Rizzo, S., Russo, P., Russotto, D., Santonocito, P., Sapienza, M., Sassi, K., Schmidt, K., Siwek Wilczynska, I., Skwira, M. L., Sperduto, Ł., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, L., Zetta, and W., Zipper

Published
2005

30. Dynamical fission in 124Sn+64Ni collision at 35A MeV

Author

E. De Filippo, A. Pagano, E. Piasecki, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, 1 G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, R. Dayras, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono Manno, S. Kowalski, E. La Guidara, G. Lanzano', G. Lanzalone, N. Le Neindre, S. Li, S. Lo Nigro, C. Maiolino, Z. Majka, M. Papa, M. Petrovici, S. Pirrone, R. Baneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, E. Rosato, 1 F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek Wilczy´nska, I. Skwira, M. L. Sperduto, J. C. Steckmeyer, A. ´Swiderski, A. Trifiro', M. Trimarchi, M. Vigilante, J. P. Wieleczko, J. Wilczy´nski, H. Wu, Z. Xiao, L. Zetta, W. Zipper, BRUNO, MAURO, D'AGOSTINO, MICHELA, GERACI, ELENA IRENE, VANNINI, GIANNI, E. De Filippo, A. Pagano, E. Piasecki, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, J. Brzychczyk, A. Bonasera, B. Borderie, R. Bougault, M. Bruno, 1 G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D Agostino, R. Dayra, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono-Manno, S. Kowalski, E. La Guidara, G. Lanzano', G. Lanzalone, N. Le Neindre, S. Li, S. Lo Nigro, C. Maiolino, Z. Majka, M. Papa, M. Petrovici, S. Pirrone, R. Baneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, E. Rosato, 1 F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek-Wilczy´nska, I. Skwira, M. L. Sperduto, J. C. Steckmeyer, A. ´Swiderski, A. Trifiro', M. Trimarchi, G. Vannini, M. Vigilante, J. P. Wieleczko, J. Wilczy´nski, H. Wu, Z. Xiao, L. Zetta, and W. Zipper

Published
2005

31. Intermediate velocity source of intermediate-mass fragments in the40Ca+40Careaction atElab=35MeV/nucleon

Author

Piotr Pawłowski, Annick Lleres, D. Heuer, L. Vagneron, E. Bisquer, A. Chabane, M. Stern, A. Giorni, P. Desesquelles, R. Płaneta, E. Gerlic, A.J. Cole, P. Lautesse, D. Guinet, W. Gawlikowicz, L. Lebreton, Brigitte Cheynis, P. Hachaj, J. Brzychczyk, D. Benchekroun, S. Micek, A. Wieloch, K. Grotowski, M. Charvet, A. Demeyer, J. B. Viano, and Zbigniew Sosin

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Nucleon
Published
1998

32. Fragmentation studies with the CHIMERA detector at LNS Catania: recent progress

Author

A. PAGANO, M. ALDERIGHI, F. AMORINI, A. ANZALONE, N. ARENA, L. AUDITORE, V. BARAN, M. BARTOLUCCI, I. BERCEANU, J. BLICHARSKA, J. BRZYCHCZYK, A. BONASERA, B. BORDERIE, R. BOUGAULT, M. BRUNO, G. CARDELLA, S. CAVALLARO, M. B. CHATTERJEE, A. CHBIHI, J. CIBOR, M. COLONNA, M. D'AGOSTINO, R. DAYRAS, E. DE FILIPPO, M. DI TORO, W. GAWLIKOWICZ, E. GERACI, F. GIUSTOLISI, A. GRZESZCZUK, P. GUAZZONI, D. GUINET, M. IACONO MANNO, S. KOWALSKI, E. LA GUIDARA, G. LANZALONE, G. LANZAN, N. LE NEINDRE, S. LI, S. LO NI GRO, C. MAIOLINO, Z. MAJKA, G. MANFREDI, T. PADUSZYNSKI, M. PAPA, C. M. PETROVICI, E. PIASECKI, S. PIRRONE, R. PLANETA, G. POLITI, A. POP, F. PORTO, M. F. RIVET, F. RIZZO, S. RUSSO, P. RUSSOTTO, M. SASSI, G. SECHI, V. SIMION, K. SIWEK WILCZYNSKA, I. SKWIRA, M. L. SPERDUTO, J. C. STECKMEYER L. SWIDERSKI, A. TRIFIR, M. TRIMARCHI, G. VANNINI, J. P. WIELECZKO, J. WILCZYNSKI, H. WU, Z. XIAO, L. ZETTA E. W. ZIPPER, ROSATO, ELIO, VIGILANTE, MARIANO, A., Pagano, M., Alderighi, F., Amorini, A., Anzalone, N., Arena, L., Auditore, V., Baran, M., Bartolucci, I., Berceanu, J., Blicharska, J., Brzychczyk, A., Bonasera, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, J., Cibor, M., Colonna, M., D'Agostino, R., Dayra, E., DE FILIPPO, M., DI TORO, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., IACONO MANNO, S., Kowalski, E., LA GUIDARA, G., Lanzalone, G., Lanzan, N., LE NEINDRE, S., Li, S., LO NI GRO, C., Maiolino, Z., Majka, G., Manfredi, T., Paduszynski, M., Papa, C. M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, M., Sassi, G., Sechi, V., Simion, K., SIWEK WILCZYNSKA, I., Skwira, M. L., Sperduto, J. C. STECKMEYER L., Swiderski, A., Trifir, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, H., Wu, Z., Xiao, and L. ZETTA E. W., Zipper

Published
2004

33. Present status of the CHIMERA-ISOSPIN experiment

Author

G. POLITI, M. ALDERIGHI, F. AMORINI, A. ANZALONE, N. ARENA, L. AUDITORE, V. BARAN, R. BARN, I. BERCEANU, J. BLI CHARSKA, A. BONASERA, B. BORDERIE, R. BOUGAULT, J. BRZYCHCZYK, M. BRUNO, G. CARDELLA, S. CAVALLARO, M. B. CHATTERJEE A. CHBI HI, J. CIBOR, M. COLONNA, M. D'AGOSTINO, R. DAYRAS, E. DE FILLIPPO, M. DI TORO, D. DE PASQUALE, E. FUSCHINI, W. GAWLIKOWICZ, E. GERACI, F. GIUSTOLISI, A. GRZESZCZUK, P. GUAZZONI, D. GUINET, M. IACONO MANNO, S. KOWALSKI, E. LA GUIDARA, G. LANZALONE, G. LANZAN, N. LE NEINDRE, S. LI, S. LO NIGRO, C. MAIOLINO, Z. MAJKA, N. G. NICOLIS, A. PAGANO, M. PAPA, C. M. PETROVICI, E. PIASECKI, S. PIRRONE, R. PLANETA, A. POP, F. PORTO, M. F. RIVET, F. RIZZO, S. RUSSO, P. RUSSOTTO, G. SECHI, K. SIWEK WILCZYNSKA, I. SKWIRA, M. L. SPERDUTO, L. SWIDERSKI, A. TRIFIR, M. TRIMARCHI, G. VANNINI, J. P. WIELECZKO, J. WILCZYNSKI, H. WU, Z. XIAO, L. ZETTA, W. ZIPPER, ROSATO, ELIO, VIGILANTE, MARIANO, G.Agnello, A.Pagano, S.Pirrone, G., Politi, M., Alderighi, F., Amorini, A., Anzalone, N., Arena, L., Auditore, V., Baran, R., Barn, I., Berceanu, J., BLI CHARSKA, A., Bonasera, B., Borderie, R., Bougault, J., Brzychczyk, M., Bruno, G., Cardella, S., Cavallaro, M. B. CHATTERJEE A., CHBI HI, J., Cibor, M., Colonna, M., D'Agostino, R., Dayra, E., DE FILLIPPO, M., DI TORO, D., DE PASQUALE, E., Fuschini, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., IACONO MANNO, S., Kowalski, E., LA GUIDARA, G., Lanzalone, G., Lanzan, N., LE NEINDRE, S., Li, S., LO NIGRO, C., Maiolino, Z., Majka, N. G., Nicoli, A., Pagano, M., Papa, C. M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, G., Sechi, K., SIWEK WILCZYNSKA, I., Skwira, M. L., Sperduto, L., Swiderski, A., Trifir, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, H., Wu, Z., Xiao, and L. ZETTA, W. ZIPPER

Published
2003

34. Dynamical aspects of fragment productions in the reactions 124Sn+64Ni and 112Sn+58Ni at 35 A.Mev

Author

E. DE FILLIPPO, M. ALDERIGHI, F. AMORINI, A. ANZALONE, N. ARENA, L. AUDITORE, V. BARAN, M. BARTOLUCCI, I. BERCEANU, J. BLICHARSKA, J. BRZYCHCZYK, A. BONASERA, B. BORDERIE, R. BOUGAULT, M. BRUNO, G. CARDELLA, S. CAVALLARO, M. B. CHATTERJEE, A. CHBIHI, J. CIBOR, M. COLONNA, M. D'AGOSTINO, R. DAYRAS, M. DI TORO, W. GAWLIKOWICZ, E. GERACI, F. GIUSTOLISI, A. GRZESZCZUK, P. GUAZZONI, D. GUINET, M. IACONO MANNO, S. KOWALSKI, E. LA GUIDARA, G. LANZAN, G. LANZALONE, N. LE NEINDRE, S. LI, S. LO NIGRO, C. MAIOLINO, Z. MAJKA, G. MANFREDI, T. PADUSZYNSKI, A. PAGANO, M. PAPA, C. M. PETROVICI, E. PIASECKI, S. PIRRONE, R. PLANETA, G. POLITI, A. POP, F. PORTO, M. F. RIVET, F. RIZZO, S. RUSSO, P. RUSSOTTO, K. SCHMIDT, G. SECHI, V. SIMION, K. SIWEK WILCZYNSKA, I. SKWIRA, M. L. SPERDUTO, J. C. STECKMEYER, L. SWIDERSKI, A. TRIFIR, M. TRIMARCHI, G. VANNINI, J. P. WIELECZKO, J. WILCZYNSKI, H. WU, Z. XIAO, L. ZETTA, W. ZIPPER, ROSATO, ELIO, VIGILANTE, MARIANO, G.Agnello, A.Pagano, S.Pirrone, E., DE FILLIPPO, M., Alderighi, F., Amorini, A., Anzalone, N., Arena, L., Auditore, V., Baran, M., Bartolucci, I., Berceanu, J., Blicharska, J., Brzychczyk, A., Bonasera, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, J., Cibor, M., Colonna, M., D'Agostino, R., Dayra, M., DI TORO, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., IACONO MANNO, S., Kowalski, E., LA GUIDARA, G., Lanzan, G., Lanzalone, N., LE NEINDRE, S., Li, S., LO NIGRO, C., Maiolino, Z., Majka, G., Manfredi, T., Paduszynski, A., Pagano, M., Papa, C. M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, Rosato, Elio, F., Rizzo, S., Russo, P., Russotto, K., Schmidt, G., Sechi, V., Simion, K., SIWEK WILCZYNSKA, I., Skwira, M. L., Sperduto, J. C., Steckmeyer, L., Swiderski, A., Trifir, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, J., Wilczynski, H., Wu, Z., Xiao, and L. ZETTA, W. ZIPPER

Published
2003

35. Ca40+Ca40reaction atElab=35MeV/nucleon: Filters and signatures to distinguish nearly central from peripheral collisions

Author

Zbigniew Sosin, E. Bisquer, L. Vagneron, D. Benchekrovn, J. Brzychczyk, S. Micek, D. Guinet, A.J. Cole, A. Chabane, R. Płaneta, A. Wieloch, M. Stern, A. Giorni, D. Heuer, Brigitte Cheynis, P. Lautesse, W. Gawlikowicz, K. Grotowski, P. Desesquelles, J. B. Viano, E. Gerlic, P. Hachaj, L. Lebreton, Piotr Pawłowski, Annick Lleres, A. Demeyer, P. Burzyński, and M. Charvet

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Nucleon
Published
1996

36. Gas chambers for identification of charged particles in 4π systems

Author

T. Barczyk, L. Vagneron, D. Benchekrovn, A. Demeyer, A.J. Cole, L. Lebreton, A. Chabane, P. Burzyński, K. Grotowski, S. Micek, A. Giorni, R. Planeta, Piotr Pawłowski, J.B. Viano, Brigitte Cheynis, E. Gerlic, Annick Lleres, W. Gawlikowicz, M. Stern, P. Lautesse, J. Brzychczyk, P. Désesquelles, D. Heuer, and D. Guinet

Subjects
Physics, Nuclear and High Energy Physics, Argon, chemistry.chemical_element, Charged particle, Methane, Particle detector, Anode, chemistry.chemical_compound, chemistry, Ionization, Isobutane, Tetrafluoromethane, Atomic physics, Instrumentation
Abstract

Gas ionization chambers of a special shape adapted for 4π detector systems are presented. Different anode wire configurations are discussed for three working gases: Ar + methane(10%), isobutane, and tetrafluoromethane.

Published
1995

37. Correlations between emission timescale of fragments and isospin dynamics in124Sn+64Ni and112Sn+58Ni reactions at 35AMeV

Author

E. Geraci, M. Bruno, L. Zetta, K. Schmidt, R. Płaneta, Ivano Lombardo, M. Trimarchi, B. Borderie, Maria Colonna, S. Cavallaro, E. La Guidara, Giuseppe Verde, G. Lanzano, S. Pirrone, T. Cap, M. D'Agostino, M. B. Chatterjee, R. Bougault, A. Pagano, P. Guazzoni, E. De Filippo, J.P. Wieleczko, A. Anzalone, I. Berceanu, S. Kowalski, W. Gawlikowicz, E. Piasecki, Lucrezia Auditore, E. Galichet, C. Maiolino, M. Papa, J.D. Frankland, G. Politi, F. Rizzo, M.F. Rivet, Antonio Trifiro, F. Porto, P. Russotto, Amalia Pop, J. Wilczynski, M. Di Toro, V. Baran, Elio Rosato, K. Siwek-Wilczyńska, I. Skwira-Chalot, A. Chbihi, W. Zipper, N. Le Neindre, G. Cardella, F. Amorini, A. Grzeszczuk, Mariano Vigilante, G. Lanzalone, and R. Dayras

Subjects
Physics, Nuclear and High Energy Physics, Density gradient, 010308 nuclear & particles physics, media_common.quotation_subject, Nuclear matter, 01 natural sciences, Asymmetry, Nuclear physics, Mean field theory, Fragmentation (mass spectrometry), Isospin, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Anisotropy, media_common
Abstract

We present a new experimental method to correlate the isotopic composition of intermediate mass fragments (IMF) emitted at midrapidity in semiperipheral collisions with the emission timescale: IMFs emitted in the early stage of the reaction show larger values of $\ensuremath{\langle}N/Z\ensuremath{\rangle}$ isospin asymmetry, stronger angular anisotropies, and reduced odd-even staggering effects in neutron to proton ratio $\ensuremath{\langle}N/Z\ensuremath{\rangle}$ distributions than those produced in sequential statistical emission. All these effects support the concept of isospin ``migration'', that is sensitive to the density gradient between participant and quasispectator nuclear matter, in the so called neck fragmentation mechanism. By comparing the data to a stochastic mean field (SMF) simulation we show that this method gives valuable constraints on the symmetry energy term of nuclear equation of state at subsaturation densities. An indication emerges for a linear density dependence of the symmetry energy.

Published
2012

38. Aligned breakup of heavy nuclear systems as a new type of deep inelastic collisions at small impact parameters

Author

W. Zipper, F. Amorini, G. Cardella, L. Zetta, Z. Majka, M. Trimarchi, S. Pirrone, F. Rizzo, I. Skwira-Chalot, E. La Guidara, Maria Colonna, S. Cavallaro, E. De Filippo, C. Maiolino, P. Guazzoni, A. Anzalone, M. B. Chatterjee, M. Papa, K. Siwek-Wilczyńska, P. Russotto, E. Geraci, J. Brzychczyk, J. Wilczynski, F. Porto, E. Piasecki, K. Schmidt, R. Płaneta, Angelo Pagano, S. Kowalski, W. Gawlikowicz, J. Łukasik, M. Di Toro, V. Baran, Antonio Trifiro, G. Lanzalone, Ł. Świderski, N. G. Nicolis, A. Grzeszczuk, A. Sochocka, Lucrezia Auditore, G. Politi, J.P. Wieleczko, 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 reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Inelastic collision, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Inelastic scattering, Breakup, Deep inelastic scattering, 01 natural sciences, Nuclear physics, 0103 physical sciences, 25.70.Lm, 25.70.Mn, Impact parameter, Nuclear Experiment, 010306 general physics, Nucleon, Ternary operation
Abstract

An interesting process of violent reseparation of a heavy nuclear system into three or four fragments of comparable size was recently observed in {sup 197}Au+{sup 197}Au collisions at 15 MeV/nucleon. Combined analysis of the binary deep inelastic events and the ternary and quaternary breakup events demonstrates that the newly observed ternary and quaternary reactions belong to the same wide class of deep inelastic collisions as the conventional (binary) damped reactions. It is shown that the ternary and quaternary breakup reactions occur at extremely inelastic collisions corresponding to small impact parameters, while more peripheral collisions lead to well-known binary deep inelastic reactions.

Published
2010

39. Strong enhancement of dynamical emission of heavy fragments in the neutron-richSn124+Ni64reaction at35A MeV

Author

R. Dayras, M. Papa, P. Russotto, Angelo Pagano, J. Wilczynski, M. D'Agostino, Amalia Pop, F. Porto, J. Blicharska, M. Di Toro, G. Cardella, Lucrezia Auditore, S. Pirrone, V. Baran, Maria Colonna, A. Chbihi, E. La Guidara, A. Grzeszczuk, G. Politi, Mariano Vigilante, J.D. Frankland, K. Siwek-Wilczyńska, P. Guazzoni, F. Rizzo, E. Piasecki, K. Schmidt, R. Płaneta, J.P. Wieleczko, G. Lanzalone, S. Kowalski, Mihai Petrovici, W. Gawlikowicz, I. Skwira-Chalot, M. B. Chatterjee, F. Amorini, R. Bougault, M. Trimarchi, F. Giustolisi, E. De Filippo, W. Zipper, N. Le Neindre, C. Maiolino, S. Cavallaro, E. Galichet, B. Borderie, A. Anzalone, I. Berceanu, Elio Rosato, L. Zetta, E. Geraci, Z. Majka, M. Bruno, J. Brzychczyk, M.F. Rivet, Antonio Trifiro, G. Lanzano, and D. Guinet

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, Elementary particle, Fermion, 01 natural sciences, Molecular physics, Isospin, 0103 physical sciences, Isotopes of tin, Content (measure theory), Neutron, Atomic physics, 010306 general physics, Nucleon
Abstract

A quantitative comparison is made between the absolute cross sections associated with statistical and dynamical emission of heavy fragments in the {sup 124}Sn+{sup 64}Ni and {sup 112}Sn+{sup 58}Ni collisions experimentally investigated at 35A MeV beam energy using the multidetector CHIMERA. The result shows that the dynamical process is about twice as probable in the neutron-rich {sup 124}Sn+{sup 64}Ni system as in the {sup 112}Sn+{sup 58}Ni neutron-poor one. This unexpected and significant difference indicates that the reaction mechanism is strongly dependent on the entrance-channel isospin (N/Z) content.

Published
2010

40. Energy dependence of 238U fission yields investigated in inverse kinematics

Author

L. Pienkowski, Enrique Casarejos, M. Staniou, K. Sümmerer, K. Subotic, H. Alvarez-Pol, K. Helariutta, B. Blank, W. Gawlikowicz, Martin Veselsky, S. Lukic, V. Föhr, Fernando Montes, D. Pérez-Loureiro, J. Benlliure, J. Taieb, Andreas Martin Heinz, and M. Gascón

Subjects
Physics, Nuclear reaction, Inverse kinematics, Isotopes of uranium, Neutron emission, Fission, QC1-999, Nuclear Theory, Fission product yield, Nuclear physics, Uranium-238, Neutron, Atomic physics, Nuclear Experiment
Abstract

The production cross sections of neutron-rich fission residues produced in reactions induced by a 238U beam impinging onto Pb and Be targets were investigated at the Fragment Separator (FRS) at GSI using the inverse kinematic technique. These data allowed us to discuss the optimum energies in fission for producing the most neutron-rich residues.

Published
2010

41. Observation of fast collinear partitioning of theAu197 +Au197system into three and four fragments of comparable size

Author

M. Di Toro, V. Baran, E. La Guidara, F. Amorini, L. Zetta, Z. Majka, M. Trimarchi, G. Lanzalone, W. Zipper, Maria Colonna, Antonio Trifiro, J.P. Wieleczko, J. Łukasik, G. Cardella, F. Porto, K. Siwek-Wilczyńska, J. Brzychczyk, S. Pirrone, A. Sochocka, E. De Filippo, A. Anzalone, A. Grzeszczuk, Ł. Świderski, K. Schmidt, R. Płaneta, N. G. Nicolis, M. B. Chatterjee, E. Geraci, E. Piasecki, Lucrezia Auditore, S. Cavallaro, A. Pagano, P. Guazzoni, G. Politi, I. Skwira-Chalot, S. Kowalski, Michele Papa, W. Gawlikowicz, C. Maiolino, F. Rizzo, J. Wilczyński, and P. Russotto

Subjects
Physics, Nuclear and High Energy Physics, Angular momentum, 010308 nuclear & particles physics, Hadron, Inelastic collision, Elementary particle, Inelastic scattering, 7. Clean energy, 01 natural sciences, Baryon, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Ternary operation
Abstract

Collisions of a very heavy nonfusing nuclear system $^{197}\mathrm{Au}$$+$$^{197}\mathrm{Au}$ were studied at an energy of $15$ MeV/nucleon. An interesting process of violent reseparation of this heavy system into three or four fragments of comparable size was observed. In the case of ternary partitioning, either the projectile-like fragment (PLF) or target-like fragment (TLF) breaks up almost collinearly with the PLF-TLF separation axis. In the case of quaternary reactions, both PLF and TLF were observed breaking up along this direction. By comparison with a dynamical model of deep inelastic collisions it was concluded that the ternary and quaternary reactions occur in semiperipheral collisions, in a range of angular momenta corresponding to about $0.5--0.7$ of the maximum $L$ value for grazing collisions. The time elapsing from the scission of the binary PLF $+$ TLF system to the secondary scission of PLF or TLF was estimated to be of about $70--80$ fm/$c$ for the ternary reactions and $80--100$ fm/$c$ for the quaternary reactions.

Published
2010

42. Correlations between reaction product yields as a tool for probing heavy-ion reaction scenarios

Author

L. G. Sobotka, Zbigniew Sosin, S. A. Baldwin, Romualdo deSouza, Jan Toke, D. G. Sarantites, S. Micek, W. Gawlikowicz, W. U. Schröder, T. Barczyk, R. Płaneta, K. Grotowski, Dileep Agnihotri, and R. J. Charity

Subjects
Baryon, Nuclear reaction, Physics, Nuclear physics, Nuclear and High Energy Physics, Hadron, Neutron, Elementary particle, Fermion, Atomic number, Statistical physics, Nuclear Experiment, Nucleon
Abstract

Experimental multidimensional joint distributions of neutrons and charged reaction products were analyzed for 136 Xe + 209 Bi reactions at E/A = 28, 40, and 62 MeV and were found to exhibit several different types of prominent correlation patterns. Some of these correlations have a simple explanation in terms of the system excitation energy and pose little challenge to most statistical decay theories. However, several other types of correlation patterns are difficult to reconcile with some, but not other, possible reaction scenarios. In this respect, correlations between the average atomic numbers of intermediate-mass fragments, on the one hand, and light particle multiplicities, on the other, are notable. This kind of multiparticle correlation provides a useful tool for probing reaction scenarios, which is different from the traditional approach of interpreting inclusive yields of individual reaction products.

Published
2010

43. NEW DETECTOR SYSTEM FOR SUPER HEAVY ELEMENTS DETECTION

Author

N. Alamanos, A. Wieloch, Louise Stuttge, M. Adamczyk, Francis Hanappe, J. Błocki, Tomasz Kozik, P. Bańka, M. Kisielewski, M. Kowalczyk, A. Gillibert, W. Gawlikowicz, Jean Péter, A. Khouaja, F. Hannachi, E. Piasecki, Ch. Vandamme, L. Manduci, K. Łojek, S. Grévy, R. Hue, A. Drouart, F. de Oliveira Santos, G. Politi, P. Lasko, J.P. Wieleczko, Ch. Stodel, A. Lopez-Martens, A.J. Kordyasz, R. Dayras, Ł. Zosiak, Zbigniew Sosin, Benoît Avez, M. G. Saint-Laurent, Anna Gonciarz, A. Trzcińska, 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, 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), CSNSM SNO, 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)-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 de Sciences Nucléaires et de Sciences de la Matière (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), 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), Normandie Université (NU)-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)-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 de Sciences Nucléaires et de Sciences de la Matière (CSNSM)

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Fermium, Detector, Cyclotron, General Physics and Astronomy, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Particle detector, law.invention, Nuclear physics, chemistry, law, 0103 physical sciences, 010306 general physics, Radioactive decay, Spontaneous fission
Abstract

A new detector system dedicated for very/super heavy elements (VHE/SHE) detection that decay by spontaneous fission is presented. Such a decay mode of nuclei can be found e.g. in the region of Z ≈100 (Fermium). Future experiments realized in the frame of French-Polish collaboration at the cyclotrons in GANIL and in the Heavy Ion Laboratory (HIL), University of Warsaw, is described. The results of test measurements made in the HIL for reactions 20 Ne (8 A . MeV )+120 Sn , 179 Au are presented.

Published
2010

44. Investigating the radial distributions of medium-mass nuclei

Author

Martin Veselsky, L. Pienkowski, B. Blank, Enrique Casarejos, H. Alvarez-Pol, D. Dragosavac, Fernando Montes, M. Gascon, J. Benlliure, Kerttuli Helariutta, Strahinja Lukić, V. Föhr, A. Trzcińska, K. Subotic, J. Taieb, D. Pérez-Loureiro, Andreas Martin Heinz, K. Sümmerer, M. Staniou, W. Gawlikowicz, Universidade de Santiago de Compostela [Spain] (USC ), 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), Heavy Ion Laboratory, University of Warsaw, University of Warsaw (UW), Wright Nuclear Structure Laboratory, Yale University, New Haven, Yale University [New Haven], University of Helsinki, Vinča Institute of Nuclear Sciences, University of Belgrade [Belgrade], 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), 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 Helsingin yliopisto = Helsingfors universitet = University of Helsinki

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Nuclear Theory, Radius, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Distribution (mathematics), 0103 physical sciences, Neutron, Nuclear cross section, 010306 general physics, Nuclear Experiment
Abstract

The radial evolution of the matter distributions with neutron excess has been investigated at GSI measuring total interaction cross sections for long isotopic chains of medium-mass nuclei. Comparisons with different model calculations show a clear increase of the total interaction cross sections for the most neutron-rich nuclei that we interpret as a signature for a larger matter radius of those nuclei. 10th International Conference on Nucleus-Nucleus Collisions (NN2009), Aug 16-21, 2009, Beijing, Peoples R China

Published
2009

45. Isospin effects in projectile-like dynamical fission for 112,124Sn+58,64Ni reactions at 35 AMeV

Author

P. Russotto, E. De Filippo, A. Pagano, E. Piasecki, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, B. Borderie, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayras, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanò, N. Le Neindre, C. Maiolino, Z. Majka, M. Papa, M. Petrovici, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M. F. Rivet, E. Rosato, F. Rizzo, K. Schmidt, K. Siwek-Wilczynska, I. Skwira-Chalot, A. Sochocka, L. Swiderski, A. Trifirò, M. Trimarchi, M. Vigilante, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, Audrey Chatillon, Herbert Faust, Gabriele Fioni, Dominique Goutte, Héloise Goutte, 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), 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 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), 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), 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 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
Physics, nuclear mass. fission. radioactivity, Cold fission, Cluster decay, Fission, Projectile, Nuclear Theory, 020206 networking & telecommunications, 02 engineering and technology, 21.10.Hw, 21.10.Dr, 25.70.Jj, 23.70.+j, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Entrance channel, Nuclear physics, Nuclear isospin, Isospin, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Neutron, Atomic physics, Nuclear Experiment, Beam energy
Abstract

International audience; A quantitative comparison regarding absolute cross sections associated to Statistical and Dynamical Fission processes in the 124Sn+64Ni and 112Sn+58Ni collisions experimentally investigated at 35 AMeV beam energy using multi-detector CHIMERA is presented. It results that Dynamical Fission process is about two times more probable in the neutron rich 124Sn+64Ni system than in the 112Sn+58Ni neutron poor one. The observed difference could indicate an influence of the entrance channel Isospin (N/Z) content on the reaction mechanisms.

Published
2009

46. Effects of weakly coupled channels on quasielastic barrier distributions

Author

G. Tiourin, Kouichi Hagino, W. Gawlikowicz, Aleksandra Piórkowska, Ł. Świderski, Sergei Smirnov, T. Krogulski, N. Keeley, S. Kliczewski, Krzysztof Piasecki, I. Strojek, Jerzy Jastrzębski, A. Trzcińska, A.J. Kordyasz, E. Koshchiy, E. M. Kozulin, Wladyslaw Henryk Trzaska, T. Loktev, M. Kisieliński, N. Rowley, M. Kowalczyk, S. V. Khlebnikov, Manfred Mutterer, M. Sillanpää, K. Rusek, A. Staudt, E. Piasecki, 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, Quasielastic scattering, 010308 nuclear & particles physics, chemistry.chemical_element, Fusion barrier, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Neon, Distribution (mathematics), chemistry, 0103 physical sciences, Quasiparticle, Absorption (logic), Atomic physics, 010306 general physics, Nuclear Experiment
Abstract

Heavy-ion collisions often produce fusion barrier distributions with structures displaying a fingerprint of couplings to highly collective excitations. Similar distributions can be obtained from large-angle quasielastic scattering, although in this case, the role of the many weak direct-reaction channels is unclear. For $^{20}\mathrm{Ne}+^{90}\mathrm{Zr}$, we have observed the barrier structures expected for the highly deformed neon projectile; however, for $^{20}\mathrm{Ne}+^{92}\mathrm{Zr}$, we find significant extra absorption into a large number of noncollective inelastic channels. This leads to smearing of the barrier distribution and a consequent reduction in the ``resolving power'' of the quasielastic method.

Published
2009

47. Production of medium-mass neutron-rich nuclei in [sup 238]U fission

Author

D. Pérez-Loureiro, H. Álvarez-Pol, J. Benlliure, B. Blank, E. Casarejos, D. Dragosavac, V. Föhr, M. Gascón, W. Gawlikowicz, A. Heinz, K. Helariutta, A. Kelić, S. Lukić, F. Montes, L. Pieńkowski, K.-H. Schmidt, M. Staniou, K. Subotić, K. Sümmered, J. Taieb, A. Trzcińska, Audrey Chatillon, Herbert Faust, Gabriele Fioni, Dominique Goutte, and Héloise Goutte

Subjects
010302 applied physics, Nuclear reaction, Cluster decay, Isotopes of uranium, Isotope, Fission, Chemistry, Radiochemistry, 01 natural sciences, Nuclear physics, Uranium-238, 0103 physical sciences, Nuclear fusion, Neutron, 010306 general physics
Abstract

The production cross sections of neutron‐rich fission residues produced in reactions induced by a 238U beam impinging onto Pb and Be targets were investigated at the Fragment Separator (FRS) at GSI. These data allowed us to discuss the optimum energies in fission for producing the most neutron‐rich residues.

Published
2009

48. Fast Ternary and Quaternary Breakup of theAu197+Au197System in Collisions at15 MeV/nucleon

Author

Maria Colonna, G. Cardella, S. Cavallaro, K. Schmidt, R. Płaneta, J.P. Wieleczko, Di Toro M, Lucrezia Auditore, L. Zetta, C. Maiolino, J. Łukasik, Z. Majka, A. Anzalone, W. Zipper, A. Grzeszczuk, Angelo Pagano, N. G. Nicolis, G. Lanzano, S. Kowalski, W. Gawlikowicz, G. Politi, Swiderski Ł, Antonio Trifiro, E. Piasecki, J. Brzychczyk, A. Sochocka, F. Amorini, F. Rizzo, P. Russotto, J. Wilczynski, De Filippo E, I. Skwira-Chalot, M. Trimarchi, Baran, P. Guazzoni, La Guidara E, M. B. Chatterjee, F. Porto, S. Pirrone, E. Geraci, Siwek-Wilczyńiska K, and G. Lanzalone

Subjects
Nuclear physics, Physics, General Physics and Astronomy, Atomic physics, Nucleon, Breakup, Ternary operation
Abstract

A new reaction mechanism of violent reseparation of a heavy nucleus-nucleus system, {sup 197}Au+{sup 197}Au, into three or four massive fragments in collisions at 15 MeV/nucleon has been observed. After reseparation, the fragments are almost exactly aligned, thus showing a very short time scale of the reseparation process, of about 70-80 fm/c.

Published
2008

49. Centrality dependence of isospin effect signatures inSn124+64Ni andSn112+Ni58reactions

Author

G. Vannini, E. Piasecki, M. Trimarchi, Mihai Petrovici, S. Pirrone, W. Zipper, N. Le Neindre, A. Sochocka, Amalia Pop, M. Vigilanti, E. La Guidara, Maria Colonna, M. Di Toro, M. D'Agostino, V. Baran, J.D. Frankland, B. Borderie, Aldo Bonasera, F. Rizzo, E. Geraci, M. B. Chatterjee, R. Dayras, C. Maiolino, J.P. Wieleczko, G. Lanzano, A. Benisz, L. Zetta, Z. Majka, F. Amorini, K. Schmidt, A. Pagano, P. Guazzoni, J. Borgensztajn, R. Płaneta, J. Łukasik, G. Cardella, R. Bougault, Lucrezia Auditore, M. Papa, M. Krauze, K. Siwek-Wilczyńska, G. Giuliani, I. Berceanu, A. Chbihi, F. Porto, E. De Filippo, S. Cavallaro, G. Politi, A. Anzalone, D. Guinet, L. Świderski, J. Brzychczyk, I. Skwira-Chalot, A. Grzeszczuk, M.F. Rivet, E. Galichet, F. Giustolisi, P. Russotto, S. Kowalski, W. Gawlikowicz, J. Wilczynski, Antonio Trifiro, N. G. Nicolis, M. Bruno, G. Lanzalone, and Elio Rosato

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Isotopes of lithium, Nuclear Theory, 01 natural sciences, Helium-4, Excited state, Isospin, Helium-3, 0103 physical sciences, Neutron, Atomic physics, Impact parameter, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

Signatures of isospin effects were investigated for neutron-rich ({sup 124}Sn+{sup 64}Ni) and neutron-poor ({sup 112}Sn+{sup 58}Ni) systems at 35 MeV/nucleon for noncentral collisions. The centrality dependence of these signatures was tested for several impact parameter estimators. Our main observations are (i) the yields of {sup 1}H and {sup 3}He particles in the neutron-poor system are strongly enhanced with respect to the neutron-rich system, and the yields of {sup 3}H, {sup 6}He, and {sup 7,8}Li are suppressed at all impact parameters, (ii) the yields of {sup 2}H, {sup 4}He, and {sup 6}Li particles are almost the same for both systems, (iii) the N/Z ratio of intermediate mass fragments is correlated with the neutron richness of the system and is weakly dependent on the centrality of the collision, and (iv) the neutron richness of the detected fragments increases strongly with decreasing rapidity in the range from that of the projectile-like fragment to the c.m. region. The gross features of experimental data are reproduced by quantum molecular dynamics model calculations. A comparison between model calculations and the data indicates that the fragments produced in the c.m. regions are weakly excited.

Published
2008

50. A Simple Method for Rise-Time Discrimination of Slow Pulses from Charge-Sensitive Preamplifiers

Author

M. J. Quinlan, W. Gawlikowicz, W. Udo Schröder, and Jan Toke

Subjects
Physics, Nuclear and High Energy Physics, Silicon, Preamplifier, business.industry, Physics::Instrumentation and Detectors, Amplifier, Detector, chemistry.chemical_element, FOS: Physical sciences, Ranging, Particle identification, Pulse (physics), Optics, chemistry, Rise time, Nuclear Experiment (nucl-ex), business, Nuclear Experiment, Instrumentation
Abstract

Performance of a simple method of particle identification via pulse rise time discrimination is demonstrated for slow pulses from charge-sensitive preamplifiers with rise times ranging from 10 ns to 500 ns. The method is based on a comparison of the amplitudes of two pulses, derived from each raw preamplifier pulse with two amplifiers with largely differing shaping times, using a fast peak-sensing ADC. For the injected charges corresponding to energy deposits in silicon detectors of a few tens of MeV, a rise time resolution of the order of 1 ns can be achieved. The identification method is applicable in particle experiments involving large-area silicon detectors, but is easily adaptable to other detectors with a response corresponding to significantly different pulse rise times for different particle species., Comment: 10 pages, 7 figures

Published
2008
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