Triply differential cross sections for electron and positron impact on methane

被引：0

作者：

Singh, Prithvi ^{[1
]}

Bagul, Vijay ^{[1
]}

Champion, Christophe ^{[2
]}

机构：

[1] Sir Padampat Singhania Univ, Sch Engn, Dept Phys, Udaipur 313601, Rajasthan, India

[2] Univ Bordeaux, CELIA, F-33400 Talence, France

来源：

JOURNAL OF CHEMICAL PHYSICS | 2023年 / 159卷 / 04期

关键词：

CLOSE-COUPLING CALCULATIONS; IONIZATION; PHOTOIONIZATION; MOLECULES;

D O I：

10.1063/5.0149844

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We here report theoretical triply differential cross sections (TDCS) for 250 eV electron and positron impact ionization of the methane molecule calculated within the second-order distorted-wave Born approximation (DWBA2) for various momentum transfer conditions. The experimental data taken from Isik et al. [J. Phys. B: At., Mol. Opt. Phys. 49, 065203 (2016)] will be compared with the current theoretical predictions as well as molecular three body distorted wave (M3DW) approximation and generalized Sturmian function (GSF) theoretical models in a non-coplanar geometry. In the low analyzer scattering plane, the results obtained within the DWBA2 theory show better agreement with the experimental results compared to the GSF results. The M3DW results also exhibit agreement with the experimental results, in particular in the perpendicular plane geometry. Furthermore, significant differences between electron and positron TDCS were observed.

引用

页数：7

共 31 条

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