Using tritium and x-ray tubes as x-ray calibration sources for the AXAF CCD Imaging Spectrometer
Using tritium and x-ray tubes as x-ray calibration sources for the AXAF CCD Imaging Spectrometer
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使用氚和 X 射线管作为 AXAF CCD 成像光谱仪的 X 射线校准源
DOI：
10.1117/12.255991
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
M. Pivovaroff
中科院分区：
文献类型：
--
作者：
Stephen E. Jones;M. Bautz;S. Kissel;M. Pivovaroff
CCD的精确量子效率校准需要已知X射线能量的稳定源。放射源是最稳定的，尽管有一些稳定的商业X射线管可用。然而，密封的、稳定的X射线管包括过滤低能量X射线的窗口，而我们的CCD对低能量X射线敏感。因此，我们开发了一种无窗放射源，使用氚的β谱从低Z靶发出低能X射线荧光。氚放气的潜在缺点也进行了研究。该源与基于稳定的商业X射线管的附加系统耦合，以产生更高能量的X射线。这些光源一起形成了一个系统，用于比较安装在平移台上的两个CCD的量子效率测量。我们报告这些X射线源的物理和发展。
Accurate quantum efficiency calibrations for CCDs require stable sources of known x-ray energies. Radioactive sources are the most stable although some stable commercial x-ray tubes are available. However, sealed, stable x-ray tubes include windows which filter low energy x-rays to which our CCDs are sensitive. Therefore we have developed a windowless radioactive source using the beta spectrum from tritium to fluoresce low-energy x-rays from low Z targets. The potential drawback of tritium outgassing is also investigated. This source is coupled with an additional system based on a stable commercial x-ray tube to produce higher energy x-rays. Together these sources form a system for comparative quantum efficiency measurements with two CCDs mounted on translation stages. We report on the physics and development of these x-ray sources.