Measurement of HgXe /3 0 +/ fluorescence efficiency in an electron-beam-preionized, volume-stable discharge and comparison with Boltzmann kinetics code calculations

Details Measurement of HgXe /3 0 +/ fluorescence efficiency in an electron-beam-preionized, volume-stable discharge and comparison with Boltzmann kinetics code calculations Measurement of HgXe /3 0 +/ fluorescence efficiency in an electron-beam-preionized, volume-stable discharge and comparison with Boltzmann kinetics code calculations

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jap....52...13h&link_type=abstract

Journal of Applied Physics, vol. 52, Jan. 1981, p. 13-18.

Physics

1

Boltzmann Transport Equation, Electron Beams, Fluorescence, Mercury (Metal), Metal Vapor Lasers, Xenon Lamps, Electron Transitions, Emission Spectra, Gas Discharges, Gas Mixtures, Gas Pressure, Quantum Efficiency

Scientific paper

Measurements of the fluorescence efficiency of the molecular HgXe(3 0 +) - Hg(1S0) + Xe(1S0) transition in an electron-beam-preionized, volume-stable discharge are reported and compared with calculations made using a Boltzmann kinetics code. Electon beams depositing energies of 0.5 to 0.1 J/l were used to provide a preionization pulse for a current-limited discharge in a gas mixture with mercury pressures from 2 to 10 Torr and a xenon pressure of 3000 Torr. Analysis of the UV emission spectra obtained at a ratio of electric field gradient across the discharge to gas density of approximately 2 x 10 to the -17th V/sq cm indicates a fluorescence efficiency of 12 + or - 2%. Calculations of the fluorescence efficiency of the HgXe(3 0 +) state performed on the basis of a Boltzmann electron transport code coupled to a kinetics code containing the dynamics of the formation and disappearance of excited HgXe are then presented. Predictions are found to be in agreement with experiment only when the code includes loss processes involving molecular mercury formation, to which is attributed the low yields.

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