Design and operation of a stable intense high-temperature arc-discharge source of hydrogen atoms and metastable trihydrogen molecules
- Creators
- Garvey, James F.
- Kuppermann, Aron
Abstract
We report a design for a stable intense beam source of hyperthermal hydrogen atoms. The basis for the design is an arc heater used first by Knuth for the generation of high‐translational energy He–Ar beams. In the case of hydrogen atom generation this source is very unstable due to the corresponding higher temperatures which are generated by the plasma discharge. We have substantially eliminated these difficulties by the insertion of discharge‐localizing insulators and the use of a tungsten nozzle mounted in the center of a 1‐kG electromagnet. This source generates exceptionally high hydrogen atom beam intensities of ∼10^(22) atoms s^(−1) sr^(−1) with translational energy distribution functions which extend to 18 eV and whose peak occurs at energies as high as 13 eV. In addition metastable H_3 molecules having an intensity between 10^(20) and 10^(21) molecules s^(−1) sr^(−1) are formed.
Additional Information
© 1986 American Institute of Physics. Received 2 December 1985; accepted for publication 27 February 1986.Attached Files
Published - GARrsi86.pdf
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Additional details
- Eprint ID
- 32138
- Resolver ID
- CaltechAUTHORS:20120627-104220301
- Created
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2012-06-27Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field