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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Characterization of afterglow kinetics at atmospheric pressures by emission spectroscopy. I: reactions of neon ions with N-2
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Characterization of afterglow kinetics at atmospheric pressures by emission spectroscopy. I: reactions of neon ions with N-2

机译:通过发射光谱表征大气压下的余辉动力学。 I:氖离子与N-2的反应

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摘要

The afterglow of a 1 kA, 10 ns duration discharge in neon at 1-4 bar pressure containing up to 10 mbar of reactant admixture N_2 was studied by time-resolved emission spectroscopy. Destruction rates of neon ions have been experimentally determined from the selectively excited fluorescence of N~(2+) emitted as the result of charge transfer. Reasonable agreement with previously reported results was obtained over the smaller range of nitrogen pressures (below 0.8 mbar) used in those studies. Data obtained at reactant pressures higher than about 1.2 mbar were consistent with a kinetic model in which vibrationally excited Ne~(2+) ions play an important role. The slow collisional relaxation of these ions (rate coefficient 3.7 × 10~(-13) cm~3 s~(-1)) would limit the rate of Ne~+ to Ne~(2+) conversion at neon pressures higher than about 0.2 bar.
机译:通过时间分辨发射光谱法研究了在1-4 bar压力下氖气中1 kA,10 ns持续时间的余辉,其中包含高达10 mbar的反应混合物N_2。氖离子的破坏率已根据电荷转移的结果,通过选择性激发N〜(2+)发出的荧光来确定。在这些研究中使用的氮气压力较小范围(低于0.8 mbar)下,与先前报告的结果取得了合理的一致性。在高于约1.2 mbar的反应物压力下获得的数据与动力学模型一致,在动力学模型中,振动激发的Ne〜(2+)离子起着重要作用。这些离子的缓慢碰撞弛豫(速率系数为3.7×10〜(-13)cm〜3 s〜(-1))会限制氖气在高于大约255℃的压力下从Ne〜+转化为Ne〜(2+)的速率。 0.2巴

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