The influence of surface roughness and surface temperature on arc spot movement in vacuum

The movement of arc cathode spots has been measured with virgin and with eroded Mo surfaces at various temperatures. The erosion process and the temperature influence the random movement only insignificantly. Since with virgin surfaces the cathode craters overlap it is concluded that the elementary...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 1984-02, Vol.17 (2), p.L31-L34
Main Authors: Juttner, B, Pursch, H, Shilov, V A
Format: Article
Language:English
Subjects:
Electric discharges
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The movement of arc cathode spots has been measured with virgin and with eroded Mo surfaces at various temperatures. The erosion process and the temperature influence the random movement only insignificantly. Since with virgin surfaces the cathode craters overlap it is concluded that the elementary displacement step corresponds to a crater radius in all cases, provided the surfaces are sufficiently clean. This result has consequences for cathode heating models. 14 ref.--AA
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/17/2/002