Isospin fractionation: Equilibrium versus spinodal decomposition

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• 作者：C. Ducoin ; Ph. Chomaz ; F. Gulminelli
• 刊名：Nuclear Physics A
• 出版年：2007
• 出版时间：15 January 2007
• 年：2007
• 卷：781
• 期：3-4
• 页码：407-423
• 全文大小：1094 K

文摘

This paper focuses on the isospin properties of the asymmetric nuclear-matter liquid–gas phase transition analyzed in a mean-field approach, using Skyrme effective interactions. We compare two different mechanisms of phase separation for low-density matter: equilibrium and spinodal decomposition. The isospin properties of the phases are deduced from the free-energy curvature, which contains information both on the average isospin content and on the system fluctuations. Some implications on experimentally accessible isospin observables are presented.