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Electron impact cross sections for carbon monoxide and their importance in the electron kinetics of CO 2 –CO mixtures
Plasma Sources Science and Technology ( IF 3.3 ) Pub Date : 2020-01-22 , DOI: 10.1088/1361-6595/ab4e72
Polina Ogloblina , Antonio Tejero-del-Caz , Vasco Guerra , Luís L Alves

This work proposes a complete and consistent set of cross sections for electron impact collisions with carbon monoxide (CO), to be published in the IST-Lisbon database with LXCat. The set is validated by comparing swarm parameters calculated using the two-term Boltzmann solver LoKI-B with available experimental data. A severe inconsistency between the total rotational and effective cross sections reported in the literature for low values of the electron energy ( ϵ < 0.1 eV) is pointed out. It is shown that inelastic and superelastic collisions involving rotationally excited levels, as well as superelastic collisions with the first vibrational excited level, have to be taken into account to accurately calculate the electron energy distribution function. The relevance of these mechanisms implies a dependence of the effective momentum transfer cross section on the gas and vibrational temperatures and suggests its replacement by an elastic momentum transfer cross section. T...

中文翻译:

一氧化碳的电子碰撞截面及其在CO 2 -CO混合物的电子动力学中的重要性

这项工作为与一氧化碳(CO)的电子碰撞碰撞提出了一套完整且一致的横截面,并将与LXCat一起发布在IST-里斯本数据库中。通过将使用两项Boltzmann求解器LoKI-B计算的群参数与可用的实验数据进行比较来验证该集合。对于低电子能量值(reported <0.1 eV),指出了文献中报道的总旋转截面和有效截面之间的严重不一致。结果表明,必须考虑涉及旋转激发能级的非弹性和超弹性碰撞,以及与第一振动激发能级的超弹性碰撞,以精确计算电子能量分布函数。这些机制的相关性意味着有效动量传递横截面取决于气体和振动温度,并建议用弹性动量传递横截面代替。T ...
更新日期:2020-01-23
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