中国物理B ›› 2006, Vol. 15 ›› Issue (7): 1481-1485.doi: 10.1088/1009-1963/15/7/017

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Isoscaling of projectile-like fragments

钟晨, 马余刚, 方德清, 蔡翔舟, 陈金根, 沈文庆, 田文栋, 王鲲, 魏义彬, 陈金辉, 郭威, 马春旺, 马国亮, 苏前敏, 颜庭志, 左嘉旭   

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2005-11-30 修回日期:2006-01-24 出版日期:2006-07-20 发布日期:2006-07-20
  • 基金资助:
    Project supported in part by the Shanghai Development Foundation for Science and Technology of China (Grant Nos 05XD14021 and 03QA14066), the National Natural Science Foundation of China (Grant Nos 10328259, 10135030, 10405032,10405033 and 10475108), the

Isoscaling of projectile-like fragments

Zhong Chen (钟晨), Ma Yu-Gang (马余刚), Fang De-Qing (方德清), Cai Xiang-Zhou (蔡翔舟), Chen Jin-Gen (陈金根), Shen Wen-Qing (沈文庆), Tian Wen-Dong (田文栋), Wang Kun (王鲲), Wei Yi-Bin (魏义彬), Chen Jin-Hui (陈金辉), Guo Wei (郭威), Ma Chun-Wang (马春旺), Ma Guo-Liang (马国亮), Su Qian-Min (苏前敏), Yan Ting-Zhi (颜庭志), Zuo Jia-Xu (左嘉旭)   

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2005-11-30 Revised:2006-01-24 Online:2006-07-20 Published:2006-07-20
  • Supported by:
    Project supported in part by the Shanghai Development Foundation for Science and Technology of China (Grant Nos 05XD14021 and 03QA14066), the National Natural Science Foundation of China (Grant Nos 10328259, 10135030, 10405032,10405033 and 10475108), the

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摘要： In this paper, the isotopic and isotonic distributions of projectile fragmentation products have been simulated by a modified statistical abrasion--ablation model and the isoscaling behaviour of projectile-like fragments has been discussed. The isoscaling parameters α and β have been extracted respectively, for hot fragments before evaporation and cold fragments after evaporation. It looks that the evaporation has stronger effect on α than β. For cold fragments, a monotonic increase of α and β with the increase of Z and N is observed. The relation between isoscaling parameter and the change of isospin content is discussed.

关键词: heavy ion reaction, projectile fragmentation, isoscaling

Abstract: In this paper, the isotopic and isotonic distributions of projectile fragmentation products have been simulated by a modified statistical abrasion--ablation model and the isoscaling behaviour of projectile-like fragments has been discussed. The isoscaling parameters $\alpha$ and $\beta$ have been extracted respectively, for hot fragments before evaporation and cold fragments after evaporation. It looks that the evaporation has stronger effect on $\alpha$ than $\beta$. For cold fragments, a monotonic increase of $\alpha$ and $|\beta|$ with the increase of Z and N is observed. The relation between isoscaling parameter and the change of isospin content is discussed.

Key words: heavy ion reaction, projectile fragmentation, isoscaling

中图分类号:  (Projectile and target fragmentation)

  • 25.70.Mn