Photocathodes: the state of the art and some news

被引：18
作者：
Boscolo, I
Michelato, P
机构：
[1] Univ Milan, Dept Phys, I-20133 Milan, Italy
[2] Univ Milan, Ist Nazl Fis Nucl, I-20133 Milan, Italy
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 445卷 / 1-3期
关键词：
photocathode; alkali; protective film; ceramic; auger; laser;
D O I：
10.1016/S0168-9002(00)00089-9
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The present cesium telluride cathodes have the capability to provide, for months, trains of picosecond pulses carrying a charge equal/higher than 10 nanocoulomb, for a total charge higher than the microcoulomb. However, they are very delicate. A possible way to increase their robustness is by covering them with a protective film of nanostructured carbon. Ferroelectric ceramics, as possible new robust photocathodes, showed an interesting level of emission with 532 nm-25 ps laser pulses. (C) 2000 Elsevier Science B.V. All rights reserved.
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收藏
页码：389 / 393
页数：5
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