Excessive hydrogen and deuterium Balmer lines broadening in a hollow cathode
glow discharges |
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Authors: | N M??i?ovi? G Lj?Majstorovi? Email author" target="_blank">N?Konjevi?Email author |
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Affiliation: | (1) Faculty of Physics, University of Belgrade, 11001 Belgrade, P.O. Box, 368, Serbia and Montenegro;(2) Military Academy, Pavla Jurii - turma 33, 11105 Belgrade, Serbia and Montenegro |
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Abstract: | Results of a Doppler spectroscopy study of hydrogen and deuterium
Balmer lines in the stainless steel and copper hollow cathode glow
discharge, operated in pure hydrogen, deuterium and mixtures of inert gases
with hydrogen, are reported. For all gases and gas mixtures plasma
observations perpendicular to electric field revealed the excessively large
Doppler broadening. By changing mode of glow discharge operation, the
Doppler broadened line profiles in helium-hydrogen mixture are recorded
parallel to the discharge electric field as well. The excessively broadened
part of the H line profile is shifted towards blue or red
wavelength by changing the direction of electric field vector. The presence
of large excessive Balmer lines broadening in pure hydrogen and in its gas
mixture with neon as well as shifting of the excessively broadened part of
line profile by means of electric field is in contradiction with the
resonance transfer model proposed by Mills et al. in several publications,
see e.g. IEEE Trans. Plasma Sci. 31, 338 (2003)]. |
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