Light and heavy clusters in warm stellar matter

作     者：Helena Pais Francesca Gulminelli Constanca Providencia Gerd Ropke 

作者机构：CFisUC Department of Physics University of Coimbra3004-516 Coimbra Portugal LPC (CNRS/ENSICAEN/Universite de Caen Normandie)UMR6534 14050 Caen Cedex France Institut f'tir Physik Universitat Rostock 18051 RostockGermany National Research Nuclear University (MEPhI) MoscowRussia 115409 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2018年第29卷第12期

页      面：89-95页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：partly supported by the FCT(Portugal)Project No.UID/FIS/04564/2016 by former NewCompStar,COST Action MP1304.H.P.is supported by FCT(Portugal)under Project No.SFRH/BPD/95566/2013 the Organizers of IWND 2018 for the opportunity to present this work,as well as the financial support received 

主　　题：物质 温暖 簇 近似计算 virial 低密度 相对论 原子核 

摘      要：Light and heavy clusters are calculated for warm stellar matter in the framework of relativistic mean-field models, in the single-nucleus approximation. The cluster abundances are determined from the minimization of the free energy. In-medium effects of light cluster properties are included by introducing an explicit binding energy shift analytically calculated in the Thomas–Fermi approximation, and the coupling constants are fixed by imposing that the virial limit at low density is recovered. The resulting light cluster abundances come out to be in reasonable agreement with constraints at higher density coming from heavy-ion collision data. Some comparisons with microscopic calculations are also shown.