Joint theoretical and experimental study on elastic electron scattering from a methane molecule. Issue 1 (1st December 2022)

• Record Type: Journal Article
• Authors: Vukalovic, J; Maljkovic, J B; Tökési, K; Predojevic, B; Marinkovic, B P
• Is Part Of: Journal of physics. Volume 2415 Issue 1(2022)
• Publication Date: 2022-12-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/2415/1/012006
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We report on a combined experimental and theoretical study of elastic differential cross section DCS ( E, θ ) from methane molecule in the intermediate energy range (50-300eV), with experimental results limited to an angle interval of 25 to 125 degrees. Theoretical results are acquired using two approximations: a simple sum of individual atomic cross sections and the other with molecular effect taken into the account. The experimental setup based on a crossed beam technique comprising of an electron gun, a single capillary gas needle, and a detection system with a channeltron was used to measure differential cross sections. The absolute scale for the cross sections is obtained by a relative-flow method using argon gas as a reference. The dependence of DCS on the energy of incident electrons has been considered in detail. The results are analysed and compared with available theoretical and experimental data.