Understanding the isoscaling relationship in the fissioning system with evaluated data  

作　　者：Yong-Jing Chen Yang-Yang Liu Li-Le Liu Fang-Yuan Wang Ying-Xun Zhang 陈永静;刘洋阳;刘丽乐;王方元;张英逊(China Nuclear Data Center,China Institute of Atomic Energy,Beijing 102413,China;Department of Nuclear Physics,China Institute of Atomic Energy,Beijing 102413,China;Guangxi Key Laboratory of Nuclear Physics and Technology,Guangxi Normal University,Guilin 541004,China)

机构地区：[1]China Nuclear Data Center,China Institute of Atomic Energy,Beijing 102413,China [2]Department of Nuclear Physics,China Institute of Atomic Energy,Beijing 102413,China [3]Guangxi Key Laboratory of Nuclear Physics and Technology,Guangxi Normal University,Guilin 541004,China

出　　处：《Chinese Physics C》2021年第8期76-82,共7页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11790325,11875323,11875125,11947410,11705163,11790320,11790323,11961141003);the National Key R&D Program of China(2018 YFA0404404);the Continuous Basic Scientific Research Project(WDJC-2019-09,WDJC-2019-13,BJ20002501)of the funding of China Institute of Atomic Energy;Chinese-Polish Joint project by the National Science Foundation of China(11961131010)。

摘　　要：The isoscaling parameters aevai in the fissioning systems,i.e.,those extracted from the Evaluated Nuclear Data Library(ENDF/B-VIII.O)and the Joint Evaluated Fission and Fusion File(JEFF-3.3),show an obvious difference from simple statistic model prediction where only the symmetry energy plays the dominant role.To explain the aeVai as a function of the charge number of the fission fragment,a statistic scission point model is adopted.Our analysis shows that the effects of the shell correction,nuclear shape deformation,and intrinsic temperature of fission fragments are indispensable as well as the symmetry energy.Furthermore,an alternative method for extracting the intrinsic temperatures of fission fragments is proposed based on the isoscaling relationship in fission fragments.The intrinsic temperatures of the light fragments are higher than those of the heavy fragments.

关 键 词：isoscaling analysis temperature of fission fragment shell correction nuclear shape deformation 

分 类 号：O571.43[理学—粒子物理与原子核物理]