Relativistic treatment of scattering of electrons and positrons by mercury atoms. (2nd September 2019)

• Record Type: Journal Article
• Authors: Haque, M. M.; Haque, A. K. F.; Bhattacharjee, Prajna P.; Uddin, M. Alfaz; Patoary, M. Atiqur R.; Basak, A. K.; Maaza, M.; Saha, B. C.
• Is Part Of: Molecular physics. Volume 117:Number 17(2019)
• Page Start: 2303
• Page End: 2319
• Publication Date: 2019-09-02
• Subjects: Electron and positron scattering -- complex optical potential -- relativistic Dirac partial wave analysis; Molecules -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Molécules -- Périodiques; Chimie physique et théorique -- Périodiques; 539.6.05
• DOI: 10.1080/00268976.2018.1548712
• Languages: English
• ISSNs: 0026-8976

Abstract

ABSTRACT: With a complex optical potential, V ( r ), the Dirac relativistic equation is solved, employing the partial wave technique, to evaluate the differential, integrated, momentum transfer and viscosity cross-sections for the elastic scattering of e ± -Hg system over the incident energy range of 1.0 eV ≤ E i ≤ 10.0 keV. We also calculate the inelastic and grand total cross sections for this system over the same energy range. The real part of V ( r ) includes the static, the exchange and the polarisation components while the imaginary component incorporates the absorption of particles into various inelastic channels. A detailed comparison of our results with experimental and other theoretical findings show a good overall agreement throughout the studied energy range, apart from some discrepancies at lower energies < 10 eV. GRAPHICAL ABSTRACT: