Premium
Erosion Phenomena on Contaminated Cathodes Caused by Electrical Discharges in Ultra High Vacuum
Author(s) -
Jüttner B.
Publication year - 1978
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19780180409
Subject(s) - cathode , erosion , anode , limiting , contamination , materials science , metallurgy , electrode , chemistry , geology , mechanical engineering , ecology , engineering , biology , paleontology
Self‐limiting discharges occur on contaminated cathodes in UHV without any contribution of the anode. They propagate over the cathode surface with velocities ≥ 5.10 4 m/s, preferentially along grain boundaries. From these observations an analogy is suggested between micro‐discharges in high voltage gaps and are spots with weak erosion.