Thermal emittance and response time of a cesium antimonide photocathode

被引：41

作者：

Cultrera, Luca ^{[1
]}

Bazarov, Ivan ^{[1
]}

Bartnik, Adam ^{[1
]}

Dunham, Bruce ^{[1
]}

Karkare, Siddharth ^{[1
]}

Merluzzi, Richard ^{[1
]}

Nichols, Matthew ^{[1
]}

机构：

[1] Cornell Univ, Cornell Lab Accelerator Based Sci & Educ, Ithaca, NY 14853 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 15期

基金：

美国国家科学基金会;

关键词：

caesium compounds; photocathodes; photoemission;

D O I：

10.1063/1.3652758

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of the intrinsic emittance and response time of a Cs(3)Sb photocathode are presented. The emittance is obtained with a solenoid scan technique using a high voltage dc photoemission gun. Photoemission response time is evaluated using a RF deflecting cavity synchronized to a picosecond laser pulse train. We find that Cs(3)Sb has both small mean transverse energy, 160 +/- 10 meV at 532 nm laser wavelength, and a prompt response time (below the resolution of our measurement) making it a suitable material for high brightness electron photoinjectors. (C) 2011 American Institute of Physics [doi:10.1063/1.3652758]

引用

页数：3

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