Elastic scattering of e^∓ by Na atoms

ABSTRACT

The differential, integrated elastic, momentum transfer, viscosity and total cross-sections along with Sherman function for the elastic scattering of electrons and positrons by sodium atoms have been calculated within the framework of complex projectile–atom optical potential model at the impact energies 0.1 ≤ E_i ≤ 10⁴ eV for both the projectiles. The relativistic Dirac partial wave techniques, with accurate analytical charge densities, are used to obtain the scattering amplitudes. The present results produce satisfactory agreement with the experimental measurements and other theoretical calculations available in the literature.

KEYWORDS:

• Electron and positron scattering
• complex optical potential
• Dirac partial wave technique

Acknowledgments

A. K. F. Haque would like to thank TWAS-UNISCO associateship scheme for partial funding. M. Atiqur R. Patoary thanks UGC for partial supports through Project no-6(74)/UGC/RSP/ST/Physical (10)/2016/4454. B. C. Saha thanks NNSA, Award Number DE-NA0002630, for partial support.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

National Nuclear Security Administration [grant number DE-NA0002630].