Mechanisms of {ital H}{sub 2} vibrational excitation and {ital H}{sup {minus}} generation in a low-voltage plasma-beam cesium-hydrogen discharge
- A. F. Ioffe Physical-Technical Institute, 26 Polytechnicheskaya, St. Petersburg, 194021 (Russia)
The main difficulty of practical realization of the low-voltage cesium-hydrogen discharge in a dense plasma is the high value of the electron emission current density, which is required to obtain a strongly ionized cesium plasma in the discharge at the desirable value of electron temperature. In the present communication it will be shown that in the so called Knudsen mode of the discharge, the discharge at small gas pressure, the required discharge parameters, may be obtained at significantly smaller values of emission current density j{le}10 {sup A}/cm{sup 2}. This cathode emission current value may be achieved without difficulty at cesium pressure {approximately}10{sup {minus}2} Torr which is needed for maximum negative hydrogen yield in the discharge. (AIP) {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 451125
- Report Number(s):
- CONF-9510304-; ISSN 0094-243X; TRN: 97:005637
- Journal Information:
- AIP Conference Proceedings, Vol. 380, Issue 1; Conference: Joint meeting of the 7. international symposium on the production and neutralization of negative ions and beams and the 6. European workshop on the production and application of light negative ions, Upton, NY (United States), 23-27 Oct 1995; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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