A Tutorial on Electron Sources

被引：58
作者：
Jensen, Kevin L. [1 ]
机构：
[1] Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2018年 / 46卷 / 06期
关键词：
Beam optics; electron emission; emittance; field emission; photoemission; space charge; secondary emission; thermal emission; FIELD-EMISSION; WORK FUNCTION; THERMIONIC EMISSION; ENERGY-DISTRIBUTION; SINGLE-CRYSTAL; METALS; CATHODES; FOWLER; DIAMOND; CHARGE;
D O I：
10.1109/TPS.2017.2782485
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A compact introduction to the history and the canonical equations of electron emission is given for thermal emission (Richardson), field emission (Fowler-Nordheim), photoemission (Fowler-DuBridge), and secondary emission (Baroody), as well as the space-charge-limited flow (Child-Langmuir law). A general equation is derived and related to the canonical equations. Processes that affect emission, such as coatings, shielding, excitation and transport, space charge, emittance, and material properties, are considered. Requirements imposed by beam evolution are discussed.
引用
收藏
页码：1881 / 1899
页数：19
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