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    题名: Observing planets and small bodies in sputtered high-energy atom fluxes
    作者: Milillo,A;Orsini,S;Hsieh,KC;Baragiola,R;Fama,M;Johnson,R;Mura,A;Plainaki,C;Sarantos,M;Cassidy,TA;De Angelis,E;Desai,M;Goldstein,R;Ip,WH;Killen,R;Livi,S
    贡献者: 天文研究所
    关键词: ION MASS-SPECTROMETRY;MERCURYS EXOSPHERE;SOLAR-WIND;WATER ICE;SURFACE-COMPOSITION;MAGNETIC-FIELD;LUNAR-SURFACE;MAGNETOSPHERE;MODEL;ATMOSPHERES
    日期: 2011
    上传时间: 2012-03-27 18:12:27 (UTC+8)
    出版者: 國立中央大學
    摘要: The evolution of the surfaces of bodies unprotected by either strong magnetic fields or thick atmospheres in the solar system is caused by various processes, induced by photons, energetic ions, and micrometeoroids. Among these processes, the continuous bombardment of the solar wind or energetic magnetospheric ions onto the bodies may significantly affect their surfaces, with implications for their evolution. Ion precipitation produces neutral atom releases into the exosphere through ion sputtering, with velocity distribution extending well above the particle escape limits. We refer to this component of the surface ejecta as sputtered high-energy atoms (SHEA). The use of ion sputtering emission for studying the interaction of exposed bodies (EB) with ion environments is described here. Remote sensing in SHEA in the vicinity of EB can provide mapping of the bodies exposed to ion sputtering action with temporal and mass resolution. This paper speculates on the possibility of performing remote sensing of exposed bodies using SHEA and suggests the need for quantitative results from laboratory simulations and molecular physic modeling in order to understand SHEA data from planetary missions. In Appendix A, referenced computer simulations using existing sputtering data are reviewed.
    關聯: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
    显示于类别:[天文研究所] 期刊論文

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