Carruthers G R
Appl Opt. 1975 Jul 1;14(7):1667-72. doi: 10.1364/AO.14.001667.
Semitransparent photocathodes consisting of vacuum-deposited layers of CsI on electroformed nickel meshes with 40 and 60 lines/mm spacing have been investigated for applications in vacuum-ultraviolet electronic imaging devices. These photocathodes are found to have about half the quantum yield of an opaque CsI photocathode, but a factor of 2 to 3 greater quantum yield than a conventional semitransparent CsI photocathode. The limitations of window materials on short-wavelength spectral response, and their disadvantages in an energetic charged-particle environment, are eliminated. Unlike conventional opaque photocathodes, the mesh photocathodes can be used interchangeably with conventional semitransparent photocathodes in a wide variety of electronic imaging devices. Tests of mesh photocathodes in laboratory electrographic cameras indicate that best results for most applications are obtained if the output electron image has a somewhat poorer resolution than that corresponding to the mesh spacing.
已对由真空沉积在电铸镍网上的碘化铯层组成的半透明光电阴极进行了研究，该镍网的间距为40和60线/毫米，用于真空紫外电子成像设备。发现这些光电阴极的量子产率约为不透明碘化铯光电阴极的一半，但比传统半透明碘化铯光电阴极的量子产率高2至3倍。消除了窗口材料对短波长光谱响应的限制及其在高能带电粒子环境中的缺点。与传统的不透明光电阴极不同，网状光电阴极可在各种电子成像设备中与传统半透明光电阴极互换使用。实验室电子照相相机中网状光电阴极的测试表明，如果输出电子图像的分辨率比对应于网间距的分辨率稍差，则在大多数应用中可获得最佳结果。
