Model of a low pressure argon-xenon positive column
- General Electric Co., Schenectady, NY (United States). Corporate Research and Development
The authors are investigating various discharge-phosphor systems with the goal of developing a mercury-free replacement for existing fluorescent lamps. The initial work centers on a low pressure argon-xenon positive column discharge combined with a quantum splitting phosphor. This talk will outline the modeling issues and report results from modeling of the argon-xenon positive column. The model predictions will be compared with experimental measurements described in detail elsewhere at this conference. Xenon is the active radiating gas in a low pressure argon-xenon positive column, emitting resonance radiation near 147 nm. Argon serves as a relatively inactive buffer gas to retard diffusion of the charged species to the wall and thereby control the electron temperature. For use in a fluorescent lamp, they want to find conditions which maximize the efficiency for conversion of input electrical power to emitted 147 nm radiation. Acceptably high efficiency must be obtained simultaneously with power densities comparable to existing argon-mercury fluorescent lamps, around 0.4 W per cm of tube length. Seven to none electronically excited levels of the xenon atom are included in the present model. For the conditions modeled to date, they find that xenon ions are produced predominantly by electron impact on the lowest-lying excited xenon levels.
- OSTI ID:
- 63078
- Report Number(s):
- CONF-940604-; ISBN 0-7803-2006-9; TRN: IM9527%%129
- Resource Relation:
- Conference: 1994 Institute of Electrical and Electronic Engineers (IEEE) international conference on plasma science, Santa Fe, NM (United States), 6-8 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of 1994 IEEE international conference on plasma science; PB: 252 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Vacuum ultraviolet radiometry of xenon positive column discharges
VUV efficiency and radiant emittance characterization of xenon positive column discharges