H{sup -} Ion Density in the Plasma of a Low-Voltage Cesium-Hydrogen Discharge as a Function of the Cathode Emission Current

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Plasma Physics Reports

DOI:https://doi.org/10.1134/1.1947338· OSTI ID:20718008

Baksht, F G; Ivanov, V G ^[1]

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1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 (Russian Federation)

It was shown theoretically that the increase in the cathode emission current in a low-voltage cesium-hydrogen discharge to {approx_equal}10 A/cm{sup 2} leads to an increase in the electron temperature in the anode plasma to T{sub e} {>=} 1 eV. In this regime, the rate constant for the production of H{sup -} ions via dissociative electron attachment to vibrationally excited H{sub 2} molecules is close to its maximum value and the density of H{sup -} ions is maximal (about 10{sup 13} cm{sup -3}) in the anode plasma.

• OSTI ID: 20718008
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 6 Vol. 31; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANODES
CATHODES
CESIUM
DISSOCIATION
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRON ATTACHMENT
ELECTRON TEMPERATURE
EMISSION
EV RANGE
HYDROGEN
HYDROGEN IONS 1 MINUS
ION DENSITY
ION TEMPERATURE
MOLECULES
PLASMA
PLASMA DENSITY
RADIATION TRANSPORT
REACTION KINETICS