DocumentCode :
1895699
Title :
Radiometric efficiency of barium discharge plasmas
Author :
Anderson, H.M. ; MacDonagh-Dumler, J. ; Lawler, J.E.
Author_Institution :
Wisconsin Univ., Madison, WI, USA
fYear :
1997
fDate :
19-22 May 1997
Firstpage :
247
Abstract :
Summary form only given. Barium has a number of characteristics that indicate it may be a good atomic radiator in a glow discharge. 1) At practical operating temperatures barium has a vapor pressure in the mTorr range (3 mT at 840 K). 2) The excitation energy of the primary radiating level in barium is less than half of the ionization energy. 3) The wavelength of the resonance transition is suitable for direct use as a visible light source. At 553 nm, this radiation lies at the peak of the eye sensitivity curve. For these reasons, a barium glow discharge may prove to be of interest to the Lighting industry for use in a novel, efficient white light source. Progress in experimental determination of the radiometric efficiency of a dc glow discharge in Barium and progress in a modeling study of the radiometric efficiency of a barium glow discharge will be reported.
Keywords :
barium; discharge lamps; glow discharges; light sources; plasma diagnostics; radiometry; 3 mT; 553 nm; 840 K; Ba; Ba discharge plasmas; atomic radiator; excitation energy; eye sensitivity curve; glow discharge; ionization energy; lighting industry; modeling; radiometric efficiency; resonance transition; visible light source; Atomic measurements; Barium; Glow discharges; Ionization; Light sources; Plasma properties; Plasma temperature; Radiometry; Resonance; Temperature distribution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science, 1997. IEEE Conference Record - Abstracts., 1997 IEEE International Conference on
Conference_Location :
San Diego, CA, USA
ISSN :
0730-9244
Print_ISBN :
0-7803-3990-8
Type :
conf
DOI :
10.1109/PLASMA.1997.604991
Filename :
604991
Link To Document :
بازگشت