THE CATHODE SPOT PLASMA IN LOW-CURRENT AIR AND VACUUM BREAK ARCS

被引：20
|
作者：
VOGEL, N
机构：
[1] Technische Universitaet, Chemnitz-Zwickau, Chemnitz, Germany
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1993年 / 26卷 / 10期
关键词：
D O I：
10.1088/0022-3727/26/10/017
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The radiation from active cathode spots in air and vacuum break arcs was investigated by different experimental techniques: streak camera recording, time-resolved and time-integrated spectroscopy. Spot rotation has been found with two frequencies omega1 = 2 x 10(5) Hz and omega2 = 4-6 x 10(7) Hz, and two characteristic radial velocities V1 = 21 m s-1 and V2 = 130 m s-1. From spectroscopic measurements, degeneration of the upper excited atom states is deduced, corresponding to a strong non-ideality of the cathode spot plasma with consequences for the particle density (N > 10(28) M-3).
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页码：1655 / 1661
页数：7
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