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Comparison of hollow cathode and Penning discharges for metastable He production

Andruczyk, D; Feng, P X; James, Brian W; Howard, John

Description

The production of helium 21S singlet metastable atoms has been investigated using a hollow cathode discharge and a Penning discharge, under dc discharge conditions. The density of metastable atoms was measured by atomic absorption using the 21S-31P transition (501.57 nm). A range of plasma currents, varying from 16 to 180 mA, and a range of pressures, from 100 mTorr to 5 Torr, were investigated. This work is directed ultimately to the production of a supersonic metastable helium beam for plasma...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/94644
Source: Plasma Sources Science and Technology
DOI: 10.1088/0963-0252/11/4/309

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