| Measurement of ^2H（^8Li, ^9Be）n Reaction Relevant to Primordial Nucleosynthesis |
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| 引用本文： | 曾晟,柳卫平,李志宏,白希祥,颜胜权,王宝祥,连刚,苏俊.Measurement of ^2H（^8Li, ^9Be）n Reaction Relevant to Primordial Nucleosynthesis[J].中国物理快报,2005,22(9):2219-2221. |
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| 作者姓名： | 曾晟 柳卫平 李志宏 白希祥 颜胜权 王宝祥 连刚 苏俊 |
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| 作者单位： | China Institute of Atomic Energy, PO Box 275（46）, Beijing 102413 |
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| 基金项目： | Supported by the Major State Basic Research Development Programme of China under Grant No G200077400, and the National Natural Science Foundation of China under Grant Nos 19735010, 19935030, 10025524 and 10045002. |
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| 摘 要： | The angular distribution of the ^2H（^8Li, ^9Be）n （ground state） reaction, important to primordial nucleosynthesis in the inhomogeneous model, has been measured at E = 8.1 MeV using a secondary ^8Li beam. Cross section of this reaction was determined to be 9.0 4±3.4 mb. According to the cross section, the astrophysical S-factor was calculated to be 272 4±103 keV b. It is shown that ^2H（8^Li, ^9Be）n （ground state） reaction is important for creating 9Be, but less important for destroying aLl in primordial nucleosynthesis.
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| 关 键 词： | 初始核合成 原子核模型 天体物理学 锂离子束 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-04-18 |
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