摘要
太空风化作用普遍发生在月球、小行星等一些无大气层的天体表面,主要包括太阳风离子辐射和微陨石撞击等作用.通过对真实月球样品太空风化作用的研究成果以及低能离子和激光照射等地面模拟实验结果的系统综述和分析,重点分析了月壤颗粒中非晶质层和纳米铁的成因,指出太空风化研究中存在的太阳风离子辐射和微陨石撞击贡献难以区分及模拟实验模拟效果尚不充分的问题.进而提出月球太空风化研究不能简单套用其他天体的模型,并建议未来开展更多月球和陨石样品的精细化学分析.
Space weathering on airless bodies （including Moon, asteroids, and comets） is the physical and chemical alteration due to irradiation from solar wind particles and bombardment by micrometeorites. This paper compiles current lunar space weathering results from lunar soil studies, and ion and laser irradiation simulations. On the basis of these, hypothesizes about origin of amorphous rim and nanophase Fe~ on lunar soil particles were analyzed. In current researches, the contribution of solar wind irradiation and mierometeorite impact in lunar space weathering effects could not be completely distinguished. And it is suggested that lunar space weathering model should not be directly invoked for asteroids and other bodies. In the future, more microstructure and chemical compositions of samples from lunar, asteroids and IDP, more appropriate simulations are essential for resolving of the above problems.
出处
《空间科学学报》
CAS
CSCD
北大核心
2011年第6期705-715,共11页
Chinese Journal of Space Science
基金
国家自然科学基金项目(40904051)
国家高技术研究发展计划项目(2009AA122201)共同资助
关键词
月壤
太空风化
太阳风
微陨石撞击
月球
Lunar regolith, Space weathering, Solar wind, Micrometeorite impact, Moon
