摘要
嫦娥一号携带的γ射线谱仪传回大量能谱数据,对其分析与解谱是一个比较复杂的过程。针对此问题,提出按照月表γ射线来源的物理过程,分为月球表面天然放射元素、中子非弹性散射和中子俘获三部分。用MCNP程序模拟其在GRS中的能谱数据,将模拟结果叠加并与实测谱线对比,结果表明,模拟γ谱线能帮助辨识出实测谱线中的部分关键元素,例如^(40)K、^(214)Bi等。
It is a more complex data processing problem of the data of γ-ray spectrum, which were collected by Chang＇E-1 from lunar surface. It is presented that MCNP simulation for the 7 spectra, according to three kinds of physical events, such as natural radioactive elements emission, the 7 rays induced by inelastic neutron scattering and neutron capture on the lunar surface in this paper. The simulated results were superimposed and compared with the measured spectrum by Chang＇E-1. The results show that 40K and 214Bi can be identified from the measured data with our MCNP models.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2014年第1期112-117,共6页
Nuclear Physics Review
