A Theoretical Study of Scattering of <i>e</i><sup>±</sup> by Tl Atom
Sunzida Parvin,
M. Masum Billah,
Mahmudul H. Khandker,
M. Ismail Hossain,
M. M. Haque,
Mehrdad Shahmohammadi Beni,
Hiroshi Watabe,
A. K. Fazlul Haque,
M. Alfaz Uddin
Affiliations
Sunzida Parvin
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
M. Masum Billah
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
Mahmudul H. Khandker
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
M. Ismail Hossain
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
M. M. Haque
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
Mehrdad Shahmohammadi Beni
Division of Radiation Protection and Safety Control, Cyclotron and Radioisotope Center, Tohoku University, 6-3 Aoba, Aramaki, Aoba, Sendai 980-8578, Japan
Hiroshi Watabe
Division of Radiation Protection and Safety Control, Cyclotron and Radioisotope Center, Tohoku University, 6-3 Aoba, Aramaki, Aoba, Sendai 980-8578, Japan
A. K. Fazlul Haque
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
M. Alfaz Uddin
Atomic and Molecular Physics Laboratory, Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh
This article incorporates details of our calculations of the observable quantities for the scattering of electrons and positrons from a post transition metal Thallium (Tl), in the energy range of 1 eV ≤ Ei ≤ 1 MeV, using the relativistic Dirac partial wave (phase-shift) analysis employing a complex optical-potential. Absolute differential, integrated elastic and inelastic, transport, total ionization, and total cross sections and a thorough study of the critical minima in the elastic differential cross sections along with the associated angular positions of the maximum polarization points in the Sherman function are provided to study the collision dynamics. The optical potential model incorporates the interactions of the incident electron and/or positron with both the nucleus and the bound electrons of the target atom. In-depth analyses of the spin asymmetry, which are sensitive to phases related interference effect, brought on by the various ingredients of the lepton-atom interaction, are also presented. The performance of the current approach to explain the observations, with the exception of the extremely low energy domain, is shown by a comparison of the previous experimental and theoretical results on this target atom.
