Electron scattering on molecular nitrogen: common gas, uncommon cross sections
Electron scattering on molecular nitrogen: common gas, uncommon cross sections
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DOI：
10.1140/epjd/s10053-023-00687-5
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发表时间：
2023-06
期刊：
影响因子：
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通讯作者：
Mi-Young Song;Hyuck Cho;G. Karwasz;V. Kokoouline;J. Tennyson
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文献类型：
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作者：
Mi-Young Song;Hyuck Cho;G. Karwasz;V. Kokoouline;J. Tennyson
我们讨论了N2分子和N2+离子上的电子散射的特殊特征，这些特征对于建模等离子体、地球和其他行星的大气层非常重要。这些功能是，除其他外：共振增强的振动激发的区域中的形状共振约2.4 eV，共振特性的一些电子激发通道（和高值的这些横截面，无论是三重态和单重态），高横截面的解离成中性，高横截面的弹性散射（和电子跃迁）的亚稳态。对于N2+离子，我们讨论了解离和解离电离，导致在激发态的原子的形成，和解离重组强烈依赖于离子的初始振动状态。我们的结论是，该理论成为一个必不可少的完成实验，预测了许多部分截面和它们的物理特性。我们希望所提供的数据将有助于改进氮等离子体和大气模型。图形摘要
We discuss peculiar features of electron scattering on the N2molecule and the N2+ion, that are important for modeling plasmas, Earth’s and other planets’ atmospheres. These features are, among others: the resonant enhancement of the vibrational excitation in the region of the shape resonance around 2.4 eV, the resonant character of some of electronic excitation channels (and high values of these cross sections, both for triplet and singlet states), high cross section for the dissociation into neutrals, high cross sections for elastic scattering (and electronic transitions) on metastable states. For the N2+ion we discuss both dissociation and the dissociative ionization, leading to the formation of atoms in excited states, and dissociative recombination which depends strongly on the initial vibrational state of the ion. We conclude that the theory became an indispensable completion of experiments, predicting many of partial cross sections and their physical features. We hope that the data presented will serve to improve models of nitrogen plasmas and atmospheres.Graphical abstract