On the normalization of the positron-impact direct ionization cross-section in the noble gases

2002 ◽  
Vol 192 (1-2) ◽  
pp. 220-224 ◽  
Author(s):  
P. Van Reeth ◽  
M. Szłuińska ◽  
G. Laricchia
Keyword(s):  
Cross Section ◽  
Ionization Cross Section ◽  
Noble Gases ◽  
Positron Impact ◽  
Ionization Cross ◽  
Direct Ionization

Positron-impact ionization of hydrogen atoms

1985 ◽  
Vol 63 (5) ◽  
pp. 621-624 ◽  
Author(s):  
A. S. Ghosh ◽  
P. S. Majumdar ◽  
Madhumita Basu
Keyword(s):  
Cross Section ◽  
Ionization Cross Section ◽  
Impact Ionization ◽  
Orbital Method ◽  
Distorted Wave ◽  
Positron Impact ◽  
Hydrogen Atoms ◽  
Ionization Cross ◽  
Channel Wave ◽  
Final Channel

The ionization cross section of hydrogen atoms by positron impact has been calculated by using a distorted-wave polarized-orbital method. We have employed two models depending on the choice of the final-channel wave function, and the two sets of results differ dramatically. We have also found that below 100 eV the total positron-impact ionization cross section including positronium formation is appreciably larger than the corresponding results for electron-impact ionization.

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