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Progress on high-efficiency photocathodes for soft x-ray EUV and FUV photon detection

机译:高效软X射线EUV和FUV光子检测用光电阴极的研究进展

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Abstract: We report on progress in the development of high quantum detection efficiency photocathodes for microchannel plate based photon detectors to increase soft X-ray, EUV and FUV response. Initial investigations of NaBr, KI and CsBr opaque photocathodes are discussed. All show QDE's of approximately 40% in the 300 - 1000 angstroms regime, and QDE $GRT 60% at approximately 100 angstroms. KI also shows high QDE, approximately 60%, for soft X- rays (approximately 11 angstroms). Photoelectron energy and number distributions are also presented. Lifetest measurements on KBr and CsBr photocathodes show good long term stability for storage in dry nitrogen. A co-evaporated photocathode is also evaluated.!17
机译:摘要:我们报道了基于微通道板的光子探测器的高量子探测效率光电阴极的发展进展,以增加软X射线,EUV和FUV响应。讨论了NaBr,KI和CsBr不透明光电阴极的初步研究。在300-1000埃范围内,所有数据均显示约40%的QDE,在约100埃范围内,QDE $ GRT显示60%。 KI对于软X射线(大约11埃)也显示出较高的QDE,约为60%。还介绍了光电子能量和数量分布。在KBr和CsBr光电阴极上进行的寿命测试表明,在干燥氮气中存储具有良好的长期稳定性。还评估了共蒸发的光电阴极!17

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