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arXiv 0906.0579astro-ph.IM
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碲镉汞近红外探测器阵列的^{55}Fe X射线能量响应

The ^{55}Fe X-ray Energy Response of Mercury Cadmium Telluride Near-Infrared Detector Arrays

Ori D. Fox, Augustyn Waczynski, Yiting Wen, Roger D. Foltz, Robert J. Hill, Randy A. Kimble, Eliot Malumuth, Bernard J. Rauscher

摘要:

涉及^{55}Fe X射线的技术提供了测量探测器响应的直接方法。探测器的响应可以直接导致转换增益(e^- ADU^{-1})的计算,以及辅助探测器设计和性能研究。我们用8个HST WFC 3 1.7 \micron飞行级探测器标定了HgCdTe的~(55)Fe X射线能量响应和对产生能量。结果表明,每个K $α$ X射线产生2273个\pm 137电子,对应于2.61 \pm 0.16 eV的成对产生能量。不确定性主要取决于我们对转换增益的了解。在未来的研究中,我们计划通过在非常低的光水平下直接测量转换增益来消除这种不确定性。

英文摘要:

A technique involving ^{55}Fe X-rays provides a straightforward method to measure the response of a detector. The detector's response can lead directly to a calculation of the conversion gain (e^- ADU^{-1}), as well as aid detector design and performance studies. We calibrate the ^{55}Fe X-ray energy response and pair production energy of HgCdTe using 8 HST WFC3 1.7 \micron flight grade detectors. The results show that each K$α$ X-ray generates 2273 \pm 137 electrons, which corresponds to a pair-production energy of 2.61 \pm 0.16 eV. The uncertainties are dominated by our knowledge of the conversion gain. In future studies, we plan to eliminate this uncertainty by directly measuring conversion gain at very low light levels.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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