月球顽辉石质子注入的SRIM模拟  

SRIM Stimulation of Proton's Role in the Radiation of Lunar Enstatite

作　　者：李阳[1,2] 李雄耀[1] 王世杰[1] 李世杰[1] 唐红[1] 

机构地区：[1]中国科学院地球化学研究所月球与行星科学研究中心,贵阳550002 [2]中国科学院大学,北京100049

出　　处：《矿物岩石地球化学通报》2014年第1期71-76,共6页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：探月三期预研究项目(TY3Q20110029);国家自然科学基金资助项目(41003027;41273080;40803019)

摘　　要：本文旨在通过模拟实验评估太阳风质子在月表顽辉石辐射损伤中所起的作用。实验通过SRIM软件开展,系统模拟了太阳风质子对顽辉石的辐射过程,获得了太阳风质子在顽辉石中的射程、浓度分布,主要组分的溅射产额以及顽辉石的晶格损伤分布等重要参数。实验结果证明,足够剂量的太阳风质子能够对顽辉石的晶格结构形成明显的损伤,并最终导致非晶化。除此之外,太阳风质子还能够通过对不同元素的差异溅射降低顽辉石的Mg/Si与O/Si。由此得出以下结论:太阳风质子能够显著改变月表矿物的晶体结构与化学组成,是制约月表物质太空风化演化的重要因素。The purpose of this paper is to evaluate the effects of solar wind protons On the irradiation of lunar enstatire. The radiation of solar wind protons was stimulated by SRIM software, and the injection range, concentration distribution of protons, lattice damage and the sputtering yield of enstatite were calculated. The results of the stimulant experiment proved that notable crystal damage of enstatite can be produced by sufficient implanted protons. In addition, the Mg/Si and O/Si of enstatite keep decreasing with the sputtering of proton, while the reason might be attributed to the lower sputtering yield of 0 and Mg than Si in enstatite. A conclusion can be made that solar wind protons can damage the crystal structure of enstatite notably and change its chemical composition. Solar wind protons irradiation is an important force for the space weathering process of lunar surface materials.

关 键 词：月球 质子 SRIM 顽辉石 

分 类 号：TQ164[化学工程—高温制品工业]