自愈可控孔隙储层光电阴极的寿命和量子效率研究进展

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI:10.1109/IVEC.2014.6857524

E. Montgomery, B. Riddick, D. Feldman, A. Boldin, R. Ives, L. Falce

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引用次数: 4

摘要

自由电子激光等应用的电子束需要高亮度、皮秒脉冲的光电电子源。可控孔隙度储层(CPR)光电阴极是一种自修复的电子光电发射器。它的设计灵感来自热离子分配器阴极，提供延长寿命的容易污染的停止表面。我们报告了大气处理和随后的自我修复，并描述了通过使用其他表面涂层来提高量子效率(QE)的努力，该量子效率远高于Cs:W系统现有的0.1%级紫外线性能。

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Lifetime and quantum efficiency advances in self-healing controlled porosity reservoir photocathodes

Electron beams for such applications as free electron lasers demand high brightness, picosecond-pulsed photoemissive electron sources. The controlled porosity reservoir (CPR) photocathode is a self-healing electron photoemitter. Its design is inspired by thermionic dispenser cathodes, offering extended lifetime of the easily-contaminated cesiated surface. We report atmospheric handling and subsequent self-healing and describe efforts underway to increase quantum efficiency (QE) well above the existing 0.1%-class ultraviolet performance of a Cs:W system by using other surface coatings.

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IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference

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