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Influence of nitrogen impurities on an electron-excited helium atoms concentration in the self-sustained normal dc glow discharge at atmospheric pressure
Valery Arkhipenko 1, Andrey Kirillov 1, Leanid Simonchik 1, Siargey Zgirouski 1
(14/06/2004)

The influence of nitrogen impurities on the parameters of the self-sustained normal dc glow discharge at atmospheric pressure was studied. The concentrations of the low-excited helium atoms in states 2_1s, 2_1p, 2_3s and 2_3p were determined in the atmospheric pressure glow discharge in helium (99.98%He) and in helium with a nitrogen admixture. It was shown that the adding of nitrogen into helium (less 5%) leads to the increase of both interelectrode gap voltage and gas temperature. At the same time the drastically reduction of concentration of the low-excited helium atoms in cathode region even at nitrogen admixture of 0.5 % is occurred.
1 :  Laboratory of Gas Discharge Physics (LGDP)
INSTITUTE OF MOLECULAR AND ATOMIC PHYSICS – National Academy of Sciences of Belarus
Physique/Physique/Physique des plasmas
atmospheric pressure glow discharge – metastable atom – absorption spectroscopy
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