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

被引：4

作者：

Kothari, Harshit N. ^{[1
]}

Joshipura, K. N. ^{[2
]}

机构：

[1] Universal Coll Engn & Technol, Near Moti Bhoyan 382721, Kalol, India

[2] Sardar Patel Univ, Dept Phys, Vallabh Vidyanagar 388120, Gujarat, India

来源：

PRAMANA-JOURNAL OF PHYSICS | 2012年 / 79卷 / 03期

关键词：

Positron scattering; total cross-section; complex potential; INTERMEDIATE-ENERGY POSITRONS; SINGLE IONIZATION; ELECTRON-IMPACT; SCATTERING; AR; HE; NE; KR; HELIUM; XENON;

D O I：

10.1007/s12043-012-0331-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页码：435 / 442

页数：8

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