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Ar(+)-He Interaction Potential and Distribution Function Effects on SwarmMeasurements of Ar(+) + N2 Reaction-Rate Coefficients Using Helium Buffer Gas

机译：ar（+） - He相互作用势和分布函数对氦缓冲气体ar（+）+ N2反应速率系数swarm测量的影响

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Ab initio potentials for the states of ArHe+ are tested as to their ability todescribe swarm measurements of gaseous ion transport coefficients. Also tested are potentials based on spectroscopic measurements and model potentials chosen specifically so as to match the transport data. Ar+ ion velocity distributions in a drift tube containing a helium buffer are calculated from the potentials that best match the mobility data, by solution of the Boltzmann kinetic equation. The velocity distributions are used with estimated cross sections for the charge-transfer reaction Ar+ + N2 to calculate the effects upon the rate coefficients when the distribution differs from a Maxwell-Boltzmann form. The results indicate that the corrections are small at high buffer gas temperatures (293 K and above) and low to moderate electric-field strengths, but become large at low temperature (82 K) and high fields. The smallness of the corrections confirms that previous rate coefficient measurements in a drift tube show a dependence of the Ar+ + N2 reaction upon the rotational temperature of N2.

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作者
Viehland, L. A.; Viggiano, A. A.; Mason, E. A.;
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年度 1991
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总页数 13
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Distribution functions; Mobility; Boltzmann equation; Buffers; Charge transfer; Coefficients; Cross sections; Electric fields; Electrodes; Estimates; Gases; Helium; High temperature; Ions; Kinetic theory; Low temperature; Measurement; Models; Particle acc;

机译：分布函数;迁移率;玻尔兹曼方程;缓冲器;电荷转移;系数;截面;电场;电极;估计;气体;氦;高温;离子;动力学理论;低温;测量;模型;粒子acc;

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机译：激光诱导荧光测量ar（+）+ N2电荷转移中的新生振动和旋转积状态分布在0.2 eV时产生ar + N2（+）（v = 0,1）

Ar(+)-He Interaction Potential and Distribution Function Effects on SwarmMeasurements of Ar(+) + N2 Reaction-Rate Coefficients Using Helium Buffer Gas

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