New approach of fragment charge correlations in 129Xe+(nat)Sn central collisions

J. L. Charvet; R. Dayras; D. Durand; O. Lopez; D. Cussol; D. Dore; L. Nalpas; A. Van Lauwe; C. Volant

doi:10.1016/j.nuclphysa.2003.11.004

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New approach of fragment charge correlations in 129Xe+(nat)Sn central collisions

J. L. Charvet·R. Dayras·D. Durand·O. Lopez·D. Cussol·D. Dore·L. Nalpas·A. Van Lauwe·C. Volant

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Abstract

A previous analysis of the charge (Z) correlations in the $ΔZ- $ plane for Xe+Sn central collisions at 32 MeV/u has shown an enhancement in the production of equally sized fragments (low $ΔZ$) 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 $ΔZ$ bin.

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J. L. Charvet, R. Dayras, D. Durand, O. Lopez, D. Cussol, D. Dore, L. Nalpas, A. Van Lauwe, C. Volant. 2003-11-10. New approach of fragment charge correlations in 129Xe+(nat)Sn central collisions. https://doi.org/10.1016/j.nuclphysa.2003.11.004

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