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  • 标题:Numerical estimation of lunar X-ray emission for X-ray spectrometer onboard SELENE
  • 其他标题:Numerical estimation of lunar X-ray emission for X-ray spectrometer onboard SELENE
  • 本地全文:下载
  • 作者:Kazunori Ogawa ; Tatsuaki Okada ; Kei Shirai
  • 期刊名称:Earth, Planets and Space
  • 电子版ISSN:1880-5981
  • 出版年度:2008
  • 卷号:60
  • 期号:4
  • 页码:283-292
  • DOI:10.1186/BF03352793
  • 出版社:Springer Verlag
  • 摘要:We conducted a numerical estimation of lunar X-ray spectra, which is applicable for lunar X-ray fluorescence observations using an X-ray spectrometer (XRS) onboard the SELENE orbiter, with an improved simulation model. We investigated the integration times of measurements for six elements (Mg, Al, Si, Ca, Ti, and Fe) to achieve signal-to-background ratio of over 10 under various solar conditions. The results of these calculations indicate that expected along-the-track spatial resolutions of a single orbital path for Mg, Al and Si will be <90 km and 20 km under normal and active Sun conditions, respectively. Ca, Ti and Fe will be also detectable with a spatial resolution of 20 km during the periods active solar flares over M1 class happen to occur.
  • 关键词:Lunar X-ray ;numerical simulation ;X-ray spectrometer ;XRS ;SELENE
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