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New approach of fragment charge correlations in $^{129}$Xe+$^{nat}$Sn central collisions

Authors :
L. Nalpas
O. Lopez
A. Van Lauwe
D. Cussol
C. Volant
Diane Doré
R. Dayras
J.L. Charvet
D. Durand
Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Laboratoire 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)
Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
Nuclear Physics A, Nuclear Physics A, Elsevier, 2004, 730, pp.431-447. ⟨10.1016/j.nuclphysa.2003.11.004⟩, Nuclear Physics A, 2004, 730, pp.431-447. ⟨10.1016/j.nuclphysa.2003.11.004⟩
Publication Year :
2004
Publisher :
HAL CCSD, 2004.

Abstract

A previous analysis of the charge (Z) correlations in the $\Delta Z-$ plane for Xe+Sn central collisions at 32 MeV/u has shown an enhancement in the production of equally sized fragments (low $\Delta Z$) which was interpreted as an evidence for spinodal decomposition. However the signal is weak and rises the question of the estimation of the uncorrelated yield. After a critical analysis of its robustness, we propose in this paper a new technique to build the uncorrelated yield in the charge correlation function. The application of this method to Xe+Sn central collision data at 32, 39, 45 and 50 MeV/u does not show any particular enhancement of the correlation function in any $\Delta Z$ bin.<br />Comment: 23 pages, 9 figures, revised version with an added figure and minor changes. To appear in Nuclear Physics A

Details

Language :
English
ISSN :
03759474
Database :
OpenAIRE
Journal :
Nuclear Physics A, Nuclear Physics A, Elsevier, 2004, 730, pp.431-447. ⟨10.1016/j.nuclphysa.2003.11.004⟩, Nuclear Physics A, 2004, 730, pp.431-447. ⟨10.1016/j.nuclphysa.2003.11.004⟩
Accession number :
edsair.doi.dedup.....72b4be0dcbf6f886c329ed536aedd272
Full Text :
https://doi.org/10.1016/j.nuclphysa.2003.11.004⟩