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arXiv physics/0411037physics.plasm-ph
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氮杂质对atmospheric pressure自持直流辉光放电中电子激发氦原子浓度的影响

Influence of nitrogen impurities on an electron-excited helium atoms concentration in the self-sustained normal dc glow discharge at atmospheric pressure

Valery Arkhipenko, Andrey Kirillov, Leanid Simonchik, Siargey Zgirouski

摘要:

研究了大气压下氮杂质对自持正常直流辉光放电参数的影响。在大气压辉光放电中,测量了氦(99.98%He)和含氮氦中低激发态氦原子2_1s、2_1p、2_3s和2_3p的浓度。结果表明,在氦气中加入氮气(小于5%),会导致极间电压和气体温度的增加。与此同时,即使在0.5%的氮混合物中,阴极区低激发态氦原子的浓度也会急剧降低。

英文摘要:

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.

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