期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
Distributions of Neutron Exposures of the Solar System
摘要/Abstract
采用星系化学演化解析模型,结合脉冲AGB星慢中子俘获(s-过程)核合成理论,以AGB星s-过程单辐照解为前提,推导了单辐照情况下太阳系的中子辐照量分布,并将所得结果与利用参数化s-过程模型的计算结果及采用规范多事件s-过程模型的计算结果进行了比较,研究发现,计算结果与文献给出的中子辐照量分布在趋势上是一致的,但量级上有些偏差.这证明了只考虑AGB星的单辐照情况还不足以解释太阳系的中子辐照量分布,还应该考虑中子辐照量指数分布的贡献.
Using a chemical evolution analy tic model of the Galaxy,an analytical solution about the neut ron exposure of the solar system is obtained,in which the s-process material has experienced only a few neut ron exposures in the convective He-burning shell of AGB stars.It is found that they are consistent at the trend of these curves,through comparing with Beer's result and Goriely's result,respectively.But the main and strong components of the analy ticalsolution are lower than these of Beer's result and Goriely's result.This results from the simple suggestions on the evolution model of the Galaxy and the only one exposure of AGB stars,because there are exponential dist ribution of exposures for AGB stars.