| Isoscaling in Statistical Sequential Decay Model |
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| 作者姓名： | 田文栋 马余刚 蔡翔舟 方德清 郭威 马春旺 刘贵华 沈文庆 石钰 苏前敏 王宏伟 王鲲 颜廷志 |
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| 作者单位： | [1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800 [2]School of the Chinese Academy of Sciences, Beijing 100049 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10405033, 10405032, 10505026 and 10135030, the Shanghai Development Foundation for Science and Technology under Grant Nos 05XD14021 and 03QA14066, and the Major State Basic Research Programme under Contract No G200077404. |
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| 摘 要： | A sequential decay model is used to study isoscaling, i.e. the factorization of the isotope ratios from sources of different isospins and sizes over a broad range of excitation energies, into fugacity terms of proton and neutron number, R21（N, Z） = Y2（ N, Z）/Y1（ N, Z） = Cexp（αN -βZ）. It is found that the isoscaling parameters α and β have a strong dependence on the isospin difference of equilibrated source and excitation energy, no significant influence of the source size on α andβ has been observed. It is found that α and β decrease with the excitation energy and are linear functions of 1/T and △（Z/A）2 or△（N/A）2 of the sources. Symmetry energy coefticient Gsym is constrained from the relationship of a and source △（Z/A）2, /3 and source △（N/A）2.
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| 关 键 词： | 连续衰变模型 同位素率 激励能量 中子 |
| 收稿时间： | 2006-8-21 |
| 修稿时间： | 2006-08-21 |
Isoscaling in Statistical Sequential Decay Model |
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| TIAN Wen-Dong,MA Yu-Gang,CAI Xiang-Zhou,FANG De-Qing,GUO Wei,MA Chun-Wang,LIU Gui-Hua,SHEN Wen-Qing,SHI Yu,SU Qian-Min,WANG Hong-Wei,WANG Kun,YAN Ting-ZHi.Isoscaling in Statistical Sequential Decay Model[J].Chinese Physics Letters,2007,24(2):385-388. |
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| Authors: | TIAN Wen-Dong MA Yu-Gang CAI Xiang-Zhou FANG De-Qing GUO Wei MA Chun-Wang LIU Gui-Hua SHEN Wen-Qing SHI Yu SU Qian-Min WANG Hong-Wei WANG Kun YAN Ting-ZHi |
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| Institution: | 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P. 0. Box 800-204, Shanghai 201800 2School of the Chinese Academy of Sciences, Beijing 100049 |
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| Abstract: | |
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| Keywords: | 24 10 -i 24 10 Pa 25 70 -z |
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