Scattering of electron and positron by HCN: a theoretical investigation

Abstract

A theoretical investigation of differential, integrated elastic, inelastic, transport (momentum transfer & viscosity), grand total (elastic+inelastic) and total ionisation cross-sections along with the Sherman functions for the scattering of electron and positron by hydrogen cyanide (HCN) in the energy range $1\mathrm{e}\mathrm{V}-1$ MeV are presented in this report. We perform calculations using the single scattering independent atom model (IAM) and IAM with screening correction (IAMS). The scattering observables are calculated using a complex optical model potential in the framework of the Dirac partial wave analysis (DPWA). The inclusion of screening correction to the IAM appreciably improves the cross-sections, especially at low-impact energies. Our calculated results are compared with the available experimental and theoretical works found in the literature. Our present computational data agree well with prior results.

GRAPHICAL ABSTRACT

Keywords:

• Hydrogen cyanide molecule
• optical model
• independent atom model
• screening correction
• Dirac partial wave analysis

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

M. M. Billah and A. K. F. Haque thankfully acknowledge the University of Rajshahi for the partial funding through the Project Nos. 926/5/52/RU/Science-04/2020-2021 and 755/52/RU/Science-07/2022-2023.