ON THE THEORY OF ION CURRENT ONSET DELAY IN LIQUID-METAL ION SOURCES

被引：0
|
作者：
VLADIMIROV, VV
PORITSKY, PV
机构：
[1] Institute of Physics, Ukrainian Academy of Sciences, 252650 Kiev
来源：
APPLIED SURFACE SCIENCE | 1995年 / 87-8卷 / 1-4期
关键词：
Conductive materials - Cones - Electric fields - Stability - Viscosity of liquids;
D O I：
10.1016/0169-4332(94)00560-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The phenomenon of delayed onset of ion emission is studied in relation to the value of the applied voltage. On the basis of an analysis of the stability of a thin spherical layer of viscous conductive liquid covering the apex of a needle in a strong electric field, the character of the spatial structure reorganisation of spherical harmonics is described and the change of the volume of the liquid cone is calculated as a function of the value of the voltage. Taking this change and also liquid viscosity into account allows us to explain the main features of the observed dependences between the delay time before the ion current onset and the value of the voltage.
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页码：106 / 111
页数：6
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