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嫦娥一号宇生伽马射线能谱分析 被引量：2

Analysis of Cosmogenic Radionuclides in Chang'e-1 Gamma-ray Spectrometer Spectra
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摘要 介绍了一种通过宇生伽马射线分析月表部分元素含量的方法。我国嫦娥一号卫星携带的伽马射线能谱仪(CE1-GRS)探测的伽马射线能谱中,既包含月表天然放射性元素(K、U、Th等)放出的伽马射线,也包含银河宇宙射线(GCR)与月表物质(Fe、Si、O等)发生簇射反应过程中产生的伽马射线。根据已知GCR的强度和能量分布,使用蒙特卡罗方法模拟,计算出GCR与月表物质反应产生的伽马射线特征峰及面积,并与CE1-GRS测量谱线相比较,建立了几种元素测量谱线与其月表含量的关系,该方法将可用于月表非天然放射性元素平均含量的计算。 A method for determination of concentration for some major elements on the lunar surface was introduced by analyzing gamma-ray spectrum produced by cosmogenic radionuclides.The gamma-ray spectra,recorded by Chang'e-1Gamma-ray Spectrometer(CE1-GRS),consist of gamma-rays released by the decay of natural radioactive elements on the lunar surface(such as K,U,Th),also include that produced by the interaction of surface material(Fe,Si,O)and galaxy cosmic ray(GCR)with shower reaction.According to the GCR flux,the gamma-ray spectra,including the full energy peaks and their peak areas,can be simulated and calculated by Monte Carlo method.Comparing simulation results with measured spectrum by CE1-GRS,the relationship between the full energy peak area and elemental concentration was established.This method could be used for calculating some elements' average abundance on the moon surface.
作者 张婧瑶 王南萍
机构地区 中国地质大学地球物理与信息技术学院 中国地质大学地下信息探测技术与仪器教育部重点实验室
出处 《原子能科学技术》 EI CAS CSCD 北大核心 2014年第S1期9-13,共5页 Atomic Energy Science and Technology
关键词 月球探测 CE1-GRS 伽马能谱 月表伽马射线 detecting of the moon CE1-GRS gamma-ray spectra gamma-ray emission from the moon
分类号 P184.5 [天文地球—天文学]
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共引文献32

同被引文献25

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原子能科学技术
2014年 第S1期

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