Total (complete) and ionization cross-sections of argon and krypton by positron impact from 15 to 2000 eV – Theoretical investigations

Pramana

Harshit N Kothari1¹  K N Joshipura² 

[1] Universal College of Engineering & Technology, Near Moti Bhoyan, Kalol 382 721, India$$;Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388 120, India$$

关键词: Positron scattering;    total cross-section;    complex potential.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown