The protection of K-Cs-Sb photocathodes with CsBr films

被引：38

作者：

Buzulutskov, A ^{[1
]}

Shefer, E ^{[1
]}

Breskin, A ^{[1
]}

Chechik, R ^{[1
]}

Prager, M ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT PARTICLE PHYS,IL-76100 REHOVOT,ISRAEL

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 400卷 / 01期

关键词：

D O I：

10.1016/S0168-9002(97)00990-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report on photoemission properties of visible K-Cs-Sb reflective photocathodes coated with thin CsBr protective films. We present the absolute quantum efficiency and its stability under prolonged contact with oxygen. It is found that K-Cs-Sb photocathodes coated with 280 Angstrom thick CsBr films have 5% quantum efficiency at 312 nm and can withstand an exposure to 150 Torr of oxygen for half an hour. We discuss the possible role of good lattice constants matching between the photocathodes and the protecting film.

引用

页码：173 / 176

页数：4

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