Isospin-dependent multifragmentation of relativistic projectiles

R. Ogul; A. S. Botvina; U. Atav; N. Buyukcizmeci; I. N. Mishustin; P. Adrich; T. Aumann; C. O. Bacri; T. Barczyk; R. Bassini; S. Bianchin; C. Boiano; A. Boudard; J. Brzychczyk; A. Chbihi; J. Cibor; B. Czech; M. De Napoli; J. -E. Ducret; H. Emling; J. D. Frankland; M. Hellstroem; D. Henzlova; G. Imme; I. Iori; H. Johansson; K. Kezzar; A. Lafriakh; A. Le Fevre; E. Le Gentil; Y. Leifels; J. Luehning; J. Lukasik; W. G. Lynch; U. Lynen; Z. Majka; M. Mocko; W. F. J. Mueller; A. Mykulyak; H. Orth; A. N. Otte; R. Palit; P. Pawlowski; A. Pullia; G. Raciti; E. Rapisarda; H. Sann; C. Schwarz; C. Sfienti; H. Simon; K. Suemmerer; W. Trautmann; M. B. Tsang; G. Verde; C. Volant; M. Wallace; H. Weick; J. Wiechula; A. Wieloch; B. Zwieglinski

doi:10.1103/PhysRevC.83.024608

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Isospin-dependent multifragmentation of relativistic projectiles

Journal article

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Isospin-dependent multifragmentation of relativistic projectiles

R. Ogul, A. S. Botvina, U. Atav, N. Buyukcizmeci, I. N. Mishustin, P. Adrich, T. Aumann, C. O. Bacri, T. Barczyk, R. Bassini, …

Physical review. C, Nuclear physics, Vol.83(2), p.024608

24/02/2011

DOI: https://doi.org/10.1103/PhysRevC.83.024608

Abstract

Physical Sciences

Physics

Physics, Nuclear

Science & Technology

The N/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at the GSI Schwerionen Synchrotron (SIS). Stable and radioactive Sn and La beams with an incident energy of 600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. For the interpretation of the data, calculations with the statistical multifragmentation model for a properly chosen ensemble of excited sources were performed. The parameters of the ensemble, representing the variety of excited spectator nuclei expected in a participant-spectator scenario, are determined empirically by searching for an optimum reproduction of the measured fragment-charge distributions and correlations. An overall very good agreement is obtained. The possible modification of the liquid-drop parameters of the fragment description in the hot freeze-out environment is studied, and a significant reduction of the symmetry-term coefficient is found necessary to reproduce the mean neutron-to-proton ratios < N >/Z and the isoscaling parameters of Z <= 10 fragments. The calculations are, furthermore, used to address open questions regarding the modification of the surface-term coefficient at freeze-out, the N/Z dependence of the nuclear caloric curve, and the isotopic evolution of the spectator system between its formation during the initial cascade stage of the reaction and its subsequent breakup.

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Title: Isospin-dependent multifragmentation of relativistic projectiles
Creators - without role: R. Ogul - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
A. S. Botvina - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
U. Atav - Selçuk University
N. Buyukcizmeci - Selçuk University
I. N. Mishustin - Goethe University Frankfurt
P. Adrich - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
T. Aumann - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
C. O. Bacri - Institut National de Physique Nucléaire et de Physique des Particules
T. Barczyk - Jagiellonian University
R. Bassini - University of Milan
S. Bianchin - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
C. Boiano - University of Milan
A. Boudard - CEA Saclay
J. Brzychczyk - Jagiellonian University
A. Chbihi - GANIL
J. Cibor - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
B. Czech - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. De Napoli - Catania Univ, Dipartimento Fis & Astron, I-95123 Catania, Italy
J. -E. Ducret - CEA Saclay
H. Emling - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
J. D. Frankland - GANIL
M. Hellstroem - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
D. Henzlova - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
G. Imme - Catania Univ, Dipartimento Fis & Astron, I-95123 Catania, Italy
I. Iori - University of Milan
H. Johansson - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
K. Kezzar - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
A. Lafriakh - CEA Saclay
A. Le Fevre - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
E. Le Gentil - CEA Saclay
Y. Leifels - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
J. Luehning - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
J. Lukasik - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
W. G. Lynch - Michigan State University
U. Lynen - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
Z. Majka - Jagiellonian University
M. Mocko - Michigan State University
W. F. J. Mueller - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
A. Mykulyak - A Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland
H. Orth - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
A. N. Otte - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
R. Palit - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
P. Pawlowski - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
A. Pullia - University of Milan
G. Raciti - Catania Univ, Dipartimento Fis & Astron, I-95123 Catania, Italy
E. Rapisarda - Catania Univ, Dipartimento Fis & Astron, I-95123 Catania, Italy
H. Sann - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
C. Schwarz - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
C. Sfienti - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
H. Simon - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
K. Suemmerer - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
W. Trautmann - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
M. B. Tsang - Michigan State University
G. Verde - Michigan State University
C. Volant - CEA Saclay
M. Wallace - Michigan State University
H. Weick - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
J. Wiechula - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
A. Wieloch - Jagiellonian University
B. Zwieglinski - A Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland
Publication Details: Physical review. C, Nuclear physics, Vol.83(2), p.024608
Publisher: Amer Physical Soc
Number of pages: 21
Grant note: 09-02-91331 / RFBR (Russia); Russian Foundation for Basic Research (RFBR) Alexander-von-Humboldt Foundation; Alexander von Humboldt Foundation TUBITAK; Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) DFG; German Research Foundation (DFG) HPRI-CT-1999-00001 / European Community; European Commission 1 P03B 105 28; N202 160 32/4308 / Polish Ministry of Science and Higher Education; Ministry of Science and Higher Education, Poland
Identifiers: 9949269108331
Academic Unit: King Saud University
Language: English
Resource Type: Journal article