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Volume 60 Supplement 4

Special Issue: Lunar Science with the SELENE “Kaguya” Mission-Prelaunch Studies-

Instrumentation and performance evaluation of the XRS on SELENE orbiter

Abstract

The x-ray fluorescence spectrometer (XRS) on board Japanese lunar polar orbiter SELENE (Kaguya) will provide global distribution of major elemental composition on the lunar surface in energy range of characteristic K-α x-ray line emission for Mg, Al, Si, Ca, Ti, and Fe. These measurements will contribute to research of lunar origin and its evolution. The XRS shows a good energy resolution within 200 eV at 5.9 keV relying on charge coupled device (CCD) as photon energy dispersive detector. Total collective area of 100 cm2 for main detector facing the lunar surface is composed of 16 CCD chips. Instrumentation of the XRS and its performance evaluated in laboratory are presented.

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Correspondence to K. Shirai.

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Shirai, K., Okada, T., Yamamoto, Y. et al. Instrumentation and performance evaluation of the XRS on SELENE orbiter. Earth Planet Sp 60, 277–281 (2008). https://doi.org/10.1186/BF03352792

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  • DOI: https://doi.org/10.1186/BF03352792

Key words

  • X-ray fluorescent spectrometry
  • global mapping
  • Moon
  • charge coupled device