Modeling of the charge transfer afterglow excited by intense electrical discharges in high pressure helium nitrogen mixtures
Modeling of the charge transfer afterglow excited by intense electrical discharges in high pressure helium nitrogen mixtures
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DOI：
10.1063/1.443897
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发表时间：
1982-07
影响因子：
4.4
通讯作者：
J. Pouvesle;A. Bouchoule;J. Stevefelt
中科院分区：
文献类型：
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作者：
J. Pouvesle;A. Bouchoule;J. Stevefelt
在这项工作中，我们报告了由重复 3 kA、7 ns 持续放电激发的 He-N2 混合物中的双分子和三分子电荷转移和潘宁电离反应的研究。 He(2 3S) 破坏频率通过测量 2 3S→3 3P 氦跃迁的光吸收来确定，并发现与 N2+(B 2Σu→X 2Σg) 荧光的后期衰减率相关。更强烈的早期荧光归因于 He2+ 的电荷转移。双分子和三分子电荷转移反应的值分别为(1.1±0.1)×10−9 cm3 s−1和(1.36±0.20)×10−29 cm6 s−1，而潘宁反应的相应值为(7.6±0.4)×10−11 cm3 s−1和(3.3±0.3)×10−30 cm6 s−1。讨论了在这些反应中产生 N2+(B 2Σu) 态的支化比。已经制定了 He-N2 余辉的综合动力学模型，该模型能够再现作为氦 p 函数获得的所有实验数据......
In this work, we report the study of bimolecular and termolecular charge transfer and Penning ionization reactions in He–N2 mixtures excited by repetitive 3 kA, 7 ns duration discharges. He(2 3S) destruction frequencies have been determined from measurements of the optical absorption of the 2 3S→3 3P helium transition and were found to correlate with the late‐time decay rate of the N2+(B 2Σu→X 2Σg) fluorescence. The much more intense early‐time fluorescence was ascribed to charge transfer from He2+. The values found for the bimolecular and termolecular charge transfer reactions were, respectively, (1.1±0.1)×10−9 cm3 s−1 and (1.36±0.20)×10−29 cm6 s−1, while the corresponding values for the Penning reactions were (7.6±0.4)×10−11 cm3 s−1 and (3.3±0.3)×10−30 cm6 s−1. Branching ratios for producing the N2+(B 2Σu) state in these reactions are discussed. A comprehensive kinetic model of the He–N2 afterglow has been formulated which was able to reproduce all the experimental data obtained as functions of helium p...