Electron collisions with molecular hydrogen from electronically excited states using the R-matrix method. (20th November 2020)

• Record Type: Journal Article
• Authors: Meltzer, T; Tennyson, J
• Is Part Of: Journal of physics. Volume 53:Number 24(2020:Dec. 15)
• Publication Date: 2020-11-20
• Subjects: R-matrix -- electron collisions -- electronic excitation -- superelastic scattering -- metastable states; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/abc3d1
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: Cross section data for electron impact electronic excitation of electronically excited states of H2 are computed using fixed-nuclear R-matrix calculations. Specifically, there is a focus on transitions from the quasi-metastable excited states a Σ g + 3 and c Π u 3 . Data are compared with known theoretical data where available. Our calculations suggest that the published cross sections are generally too large in the low energy (<20 eV) collision region. The effect of shifting the electronic excitation thresholds to those given by essentially exact calculations is tested.