Infrared photoelectron emission from Scandate dispenser cathodes

被引：2
作者：
Jensen, KL
Feldman, DW
Virgo, M
O'Shea, PG
机构：
[1] USN, Res Lab, ESTD, Washington, DC 20375 USA
[2] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA
[3] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA
来源：
APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 06期
关键词：
D O I：
10.1063/1.1600514
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Nonlinear photoelectric emission from Scandate dispenser cathodes using 1.064-mum radiation in nanosecond-scale pulses has been observed. Unlike single-photon emission, the photocurrent is a strong function of both the initial lattice temperature and the applied electric field as well as laser intensity. The parametric data is compared to a theoretical model for the process, and the data is shown to be explicable in terms of laser heating of the electron gas and subsequent photoemission. (C) 2003 American Institute of Physics.
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页码：1269 / 1271
页数：3
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