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Electron runaway in rf discharges

Abstract

The critical electric field is computed as a function of pressure and starting energy for electrons to run away to high energies in moderate pressure discharges. The runaway conditions depend critically on the shape of the elastic cross section vs. energy curve. Computations are made for H, H{sub 2}, and He gases, and it is shown that runaway occurs much more readily in atomic hydrogen than in the other gases. The values of the runaway fields are larger than would normally occur in dc discharges, where large voltages would lead to arc formation. However, in rf discharges such electric fields can be sustained over times long compared to electron transit times but short compared to ion transit times. (author).
Authors:
Publication Date:
Oct 01, 1992
Product Type:
Technical Report
Report Number:
PSC-25
Reference Number:
SCA: 700380; PA: JPN-93:002243; SN: 93000952439
Resource Relation:
Other Information: PBD: Oct 1992
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; HIGH-FREQUENCY DISCHARGES; RUNAWAY ELECTRONS; HYDROGEN; HELIUM; STRIATIONS; CROSS SECTIONS; ATOM COLLISIONS; MEAN FREE PATH; PLASMA POTENTIAL; 700380; ELEMENTARY AND CLASSICAL PROCESSES IN PLASMAS
OSTI ID:
10130365
Research Organizations:
Nagoya Univ. (Japan). Plasma Science Center
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE93771407; TRN: JP9302243
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
26 p.
Announcement Date:
Jul 04, 2005

Citation Formats

Chen, F F. Electron runaway in rf discharges. Japan: N. p., 1992. Web.
Chen, F F. Electron runaway in rf discharges. Japan.
Chen, F F. 1992. "Electron runaway in rf discharges." Japan.
@misc{etde_10130365,
title = {Electron runaway in rf discharges}
author = {Chen, F F}
abstractNote = {The critical electric field is computed as a function of pressure and starting energy for electrons to run away to high energies in moderate pressure discharges. The runaway conditions depend critically on the shape of the elastic cross section vs. energy curve. Computations are made for H, H{sub 2}, and He gases, and it is shown that runaway occurs much more readily in atomic hydrogen than in the other gases. The values of the runaway fields are larger than would normally occur in dc discharges, where large voltages would lead to arc formation. However, in rf discharges such electric fields can be sustained over times long compared to electron transit times but short compared to ion transit times. (author).}
place = {Japan}
year = {1992}
month = {Oct}
}