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Proceedings Paper

Volume Production Of Hydrogen Negative Ions
Author(s): M. Bacal; P. Berlemont; D. A. Skinner
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Paper Abstract

The causes of observed saturation of hydrogen negative ion current at high power operation of tandem volume sources are investigated using a zero-dimensional time-dependent model, which assumes that dissociative electron attachment to highly vibrationally excited molecules is the main formation mechanism of hydrogen negative ions. It was found that the reason for saturation was the reduction of the density of molecular hydrogen, as a result of dissociation. The mean free path of the vibrationally excited molecules for various destruction processes will be discussed in relation with the source high power operation.

Paper Details

Date Published: 25 July 1989
PDF: 8 pages
Proc. SPIE 1061, Microwave and Particle Beam Sources and Directed Energy Concepts, (25 July 1989); doi: 10.1117/12.951836
Show Author Affiliations
M. Bacal, Laboratoire du C.N.R.S (France)
P. Berlemont, Laboratoire du C.N.R.S. (France)
D. A. Skinner, Laboratoire du C.N.R.S (France)

Published in SPIE Proceedings Vol. 1061:
Microwave and Particle Beam Sources and Directed Energy Concepts
Howard E. Brandt, Editor(s)

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