Abstract
Considering interactions and scattering of positrons with argon (Ar) and krypton (Kr) atoms, we have calculated total cross-sections (Q T = Q el + Q inel ) using complex spherical potentials for these systems. In positron–atom scattering it is difficult to bifurcate the ionization and cumulative excitation contained in the total inelastic cross-section. An approximate method called CSP-ic (complex scattering potential-ionization contribution) similar to electron–atom scattering has been applied to bifurcate ionization and cumulative excitation cross-sections at energies from the threshold to 2000 eV. Adequate comparisons of the present results are made, with available data.
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KOTHARI, H.N., JOSHIPURA, K.N. Total (complete) and ionization cross-sections of argon and krypton by positron impact from 15 to 2000 eV – Theoretical investigations. Pramana - J Phys 79, 435–442 (2012). https://doi.org/10.1007/s12043-012-0331-4
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DOI: https://doi.org/10.1007/s12043-012-0331-4