Journal
CONTRIBUTIONS TO PLASMA PHYSICS
Volume 50, Issue 9, Pages 808-813Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ctpp.201010136
Keywords
Short dc discharge; electric wall probe; analytical gas detector
Categories
Funding
- Department of Energy Office of Fusion Energy Science [DE-SC0001939]
- AFOSR
Ask authors/readers for more resources
A new approach leading to the development of gas analytical detectors is reported. The approach is based on measurements in the near-cathode plasma of fine structures associated with atomic and molecular plasma processes of the high energy portion of the electron energy distribution function (EEDF). A short (without positive column) dc discharge with cold cathode and conducting walls was used. The EEDF measurements in a dc discharge are technically simpler and have dramatically better sensitivity than in the afterglow since temporal resolution is not required. Additional increased probe sensitivity is achieved by using a large-area, larger-radius-of-curvature conducting wall as the probe instead of the more common thin cylindrical Langmuir probe. The wall probe, being almost flat, also greatly reduces the ion current contribution to the measurements. The new approach allows for the development of micro-analytical, dc plasma electron spectroscopy (PLES) gas detectors that are operational up to atmospheric pressure. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available