High efficiency photoemission from Cs-K-Te

被引：7

作者：

Bisero, D ^{[1
]}

vanOerle, BM ^{[1
]}

Ernst, GJ ^{[1
]}

Verschuur, JWJ ^{[1
]}

Witteman, WJ ^{[1
]}

机构：

[1] UNIV TWENTE,DEPT APPL PHYS,NL-7500 AE ENSCHEDE,NETHERLANDS

来源：

APPLIED PHYSICS LETTERS | 1997年 / 70卷 / 12期

关键词：

D O I：

10.1063/1.118362

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cs-K-Te films have been fabricated under ultrahigh vacuum by vapor deposition of Te, K, and Cs onto a Mo substrate into the preparation chamber of the free electron laser of the University of Twente. Their photoemission properties are reported in this letter. The average quantum efficiency at 259 nm measured on 5 evaporated Cs-K-Te photocathodes is 22.5%, whereas the best quantum efficiency obtained at 259 nm is 23.4%. To our knowledge, this is the highest quantum efficiency at 259 nm reported so far, being about twice that of Cs,Te photocathodes. The reported results demonstrate that Cs-K-Te photocathodes are very promising for the use in photoinjectors. (C) 1997 American Institute of Physics.

引用

页码：1491 / 1493

页数：3

共 10 条

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