A device and procedure for measurements of the effective secondary emission coefficient

被引：2

作者：

Lopatin, I. V. ^{[1
]}

Kovalskiy, S. S. ^{[1
]}

Koval, N. N. ^{[1
]}

Akhmadeev, Yu. H. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst High Current Elect, Siberian Branch, Tomsk 634055, Russia

来源：

INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2015年 / 58卷 / 02期

关键词：

Secondary emission - Cathodes;

D O I：

10.1134/S0020441215020104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The design of the device and procedure of measuring the effective secondary emission coefficient gamma(eff) in glow discharges with a large-area cathode are described. The values of gamma(eff) and the density of the ion current on the cathode in the self-sustained and nonself-sustained (under the additional external injection of electrons) discharge burning modes are determined. It is shown that for the self-sustained burning mode of the basic discharge with a current of 30 A, the value gamma(eff) a parts per thousand 0.15, being in good agreement with both the theoretically calculated and known reference data. When the basic discharge occurs in the nonself-sustained mode, gamma(eff) = 0.08-0.12, depending on the discharge burning voltage, and the ion current density on the cathode surface is equal to 0.8-1.1 mA/cm(2), being a parts per thousand 10% lower than the value characteristic of the self-sustained discharge mode.

引用

页码：247 / 251

页数：5

共 14 条

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