Features of nonequilibrium electron emission in high-current discharges

被引：0
|
作者：
Nastoyashchii, AF [1 ]
机构：
[1] SRC RF Troitsk Inst Innovat & Fus Res, Troitsk 142092, Moscow Reg, Russia
来源：
ISDEIV: XVIIITH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM - PROCEEDINGS, VOLS 1 AND 2 | 1998年 / 18卷
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D O I：
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Peculiarties of high-current electron emission in conditions of electric field penetrating a conductor are discussed. It is shown that an electron subsystem in the vicinity of an emitting surface of a conductor proves to be nonequilibrium which makes possible a sharp increase in current density of electron emission (non-equilibrium electron emission). Electron velocity distribution near the surface of the cathode spot has been found to be a nonlocal function of electric field, and electron transfer towards the emitter surface occurs due to a diffusion mechanism. The estimation of reducing the effective work function is presented.
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页码：70 / 72
页数：3
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