Cosmic ray induced degradation in X-ray detectors on board the NEAR spacecraft

Conference on the High Energy Radiation Background in Space. Workshop Record Pub Date : 1997-07-22 DOI:10.1109/CHERBS.1997.660243

S. Floyd, J. Trombka, J. Goldsten, E. Fiore

引用次数: 0

Abstract

The X-ray detectors on board the Near-Earth Asteroid Rendezvous (NEAR) spacecraft are argon gas filled proportional counters. Their resolution is checked periodically by commanding an Fe-55 radioactive source into position in front of the detector window. Low energy tailing and broadening of the 6 keV line is observed. The phenomenon observed, the mechanism behind the degradation and the impact on instrument performance are considered.

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宇宙射线引起近地航天器上x射线探测器的退化

近地小行星交会(NEAR)航天器上的x射线探测器是充满氩气的比例计数器。它们的分辨率是通过命令一个Fe-55放射源进入探测器窗口前的位置来定期检查的。观察到低能量尾迹和6 keV谱线的展宽。考虑了观察到的现象，退化背后的机制以及对仪器性能的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference on the High Energy Radiation Background in Space. Workshop Record

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