Study of the secondary electron emission coefficient using disc and conical electrodes

被引：5
|
作者：
Radwan, Samah I. [1 ]
El-Khabeary, H. [1 ]
Helal, A. G. [1 ]
机构：
[1] Atom Energy Author, Nucl Res Ctr, Basic Nucl Sci Div, Accelerators & Ion Sources Dept, Cairo 13759, Egypt
来源：
CANADIAN JOURNAL OF PHYSICS | 2016年 / 94卷 / 12期
关键词：
breakdown voltage; secondary electron emission coefficient; disc and conical electrodes; first ionization coefficient; discharge current; PLASMA; TEMPERATURE; DISCHARGES; BREAKDOWN; SURFACE; VOLTAGE; ARGON;
D O I：
10.1139/cjp-2016-0334
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this work, glow discharge is formed by similar disc and conical electrode shapes from aluminum material at constant anode-cathode gap distance equal to 10 cm. The breakdown voltage and discharge current against the pressure x distance are measured at different pressures. The secondary electron emission coefficient is calculated using Townsend's secondary ionization coefficient equation. A comparison is made between the breakdown voltage, discharge current, and secondary electron emission coefficient using disc and conical anode-cathode electrodes. Hence with a product of pressure and distance equal to 6 Torr cm, the secondary electron emission coefficient value of conical shape is higher than for the disc shape.
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页码：1275 / 1281
页数：7
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