| 原子核的中子俘获截面半经验公式研究 |
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| 引用本文： | 程军 吴宏. 原子核的中子俘获截面半经验公式研究[J]. 南京大学学报(自然科学版), 1994, 30(1): 32-41 |
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| 作者姓名： | 程军 吴宏 |
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| 作者单位： | 南京大学天文系，北京天文台，云南天文台 |
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| 摘 要： | 根据最近发表的稳定核及有较长半衰期非稳定核的中子俘获截而数据［１］，考虑了原子核的壳层改正与幻数效应［２］，重新拟合了Ｗｏｏｓｌｅｙ于１９８６年提出的关于重原子核的中子俘获平均热截面半经验公式中的经验系数，并且把新结果推广应用到非稳定核上．我们发现，对于幻数附近以外区域的核素，这种简易的半经验方法给出的σｎｙ（３０Ｋｅｒ）结果大大改进。
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| 关 键 词： | 重元素核合成，中子俘获过程，中子俘获截面 |
RESEARCH OF SEMI-EMPIRICAL FORMULA OF NCLEUS NEUTRON CAPTURE COROSS SECTION |
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| Cheng Jun, Pen Qiuhe,Wu Hong,Yuan Yongquan,. RESEARCH OF SEMI-EMPIRICAL FORMULA OF NCLEUS NEUTRON CAPTURE COROSS SECTION[J]. Journal of Nanjing University: Nat Sci Ed, 1994, 30(1): 32-41 |
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| Authors: | Cheng Jun Pen Qiuhe Wu Hong Yuan Yongquan |
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| Abstract: | Woolslty S E gave a semi-empirical formula of average heat cross section of neutron capture of heavy nucleus in 1986. We fit the empirical coefficients of the formula again and apply the new results to unstable nucleus, according to the recently published neutron capture cross section data of stable nucleus and unstable nucleus with longer half-life, and considering shell correction and magic number effect. We find that the result of nuclide of the region beyond the magic number is greatly improved by the simple semi-empirical method. |
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| Keywords: | nucleosynthesis of the heavy element neutron capture process neutron capture cross section |
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