Weak influence of the secondary surface processes on the regolith of Chang’E-5 landing site
Weak influence of the secondary surface processes on the regolith of Chang’E-5 landing site
复制标题
DOI：
10.1038/s43247-023-00937-9
复制
发表时间：
2023-08
期刊：
影响因子：
--
通讯作者：
Junjie Li;Ziying Li;Zhixin Huang;Ting Li;Dongfa Guo;Hanbin Liu;Guang Fan;M. Qin;Liang Lei;Xin Zhou;Hailong Wang;Kaiyu Wang;Xiang Gao;Apeng Yu;Ruiping Liu;Jia Zhang;Liumin Deng;Sheng He;Yong Wu;Lin‐Fei Qiu
中科院分区：
文献类型：
--
作者：
Junjie Li;Ziying Li;Zhixin Huang;Ting Li;Dongfa Guo;Hanbin Liu;Guang Fan;M. Qin;Liang Lei;Xin Zhou;Hailong Wang;Kaiyu Wang;Xiang Gao;Apeng Yu;Ruiping Liu;Jia Zhang;Liumin Deng;Sheng He;Yong Wu;Lin‐Fei Qiu
月球土壤中的稀有气体提供了关于太阳风和宇宙射线与月球表面相互作用的关键信息，以及影响风化层周转过程的撞击事件的历史。在这里，我们研究了嫦娥五号土壤中惰性气体He、Ne、Ar的特征。高4He/36Ar和20Ne/36Ar值表明土壤具有典型的黑土地形特征。此外，这两个值都高于其他月球土壤，表明土壤中发生的次生过程可能没有其他月球样本那么强烈。捕获的(3He/4He)Trand(20Ne/22Ne)Tr值比阿波罗土壤的Tr值要小，也表明嫦娥五号土壤经历了较弱的次生过程。俘获的(40Ar/36Ar)tr值表明注入的太阳风很年轻。月球表面土壤对太阳风的累计暴露时间表明，嫦娥五号土壤并未严重混合来自附近岩石的溅射物质。
Noble gases in lunar soils provide critical information regarding solar wind and cosmic-ray interactions with the lunar surface, as well as the history of impact events affecting the regolith turnover processes. Here, we studied the characteristics of noble gases He, Ne, Ar in Chang’E-5 soil. High4He/36Ar and20Ne/36Ar values show that the soil has typical mare terrain characteristics. Furthermore, both values are higher than those in other lunar soils, suggesting the secondary processes occurring in the soil may have been less strong than in other lunar samples. Trapped (3He/4He)trand (20Ne/22Ne)trvalues were less fractionated than those of Apollo soils, also indicating the weak secondary processes the Chang’E-5 soil underwent. Trapped (40Ar/36Ar)trvalues indicate the implanted solar wind was young. The integrated exposure times to solar wind of the soil on the lunar surface suggest the Chang’E-5 soil was not seriously admixed by sputtered material from nearby rocks.