Threshold Limit of Electron and Positron Impact Ionization of Hydrogen Atom in the Effective Charge Model

2000 ◽  
Vol 62 (4) ◽  
pp. 310-315
Author(s):  
Utpal Roy ◽  
K Roy ◽  
N C Sil
Keyword(s):  
Hydrogen Atom ◽  
Effective Charge ◽  
Impact Ionization ◽  
Positron Impact ◽  
Threshold Limit ◽  
Charge Model

scholarly journals Few Body Effects in the Electron and Positron Impact Ionization of Atoms

Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 33
Author(s):  
R.I. Campeanu ◽  
Colm T. Whelan
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Differential Cross ◽  
Impact Ionization ◽  
Inert Gas ◽  
Interference Effects ◽  
Positron Impact ◽  
Competing Interactions ◽  
Energy Sharing

Triple differential cross sections (TDCS) are presented for the electron and positron impact ionization of inert gas atoms in a range of energy sharing geometries where a number of significant few body effects compete to define the shape of the TDCS. Using both positrons and electrons as projectiles has opened up the possibility of performing complementary studies which could effectively isolate competing interactions that cannot be separately detected in an experiment with a single projectile. Results will be presented in kinematics where the electron impact ionization appears to be well understood and using the same kinematics positron cross sections will be presented. The kinematics are then varied in order to focus on the role of distortion, post collision interaction (pci), and interference effects.

scholarly journals Electron-impact ionization of the hydrogen atom: dynamical variational treatment

2012 ◽  
Vol 388 (4) ◽  
pp. 042037
Author(s):  
P Defrance ◽  
T Kereselidze ◽  
J Lecointre ◽  
Z S Machavariani
Keyword(s):  
Hydrogen Atom ◽  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Variational Treatment

Two-center approach to fully differential positron-impact ionization of hydrogen

2014 ◽  
Vol 89 (1) ◽  
Author(s):  
A. S. Kadyrov ◽  
J. J. Bailey ◽  
I. Bray ◽  
A. T. Stelbovics
Keyword(s):  
Impact Ionization ◽  
Positron Impact ◽  
Fully Differential

Positron-impact ionization of helium in the distorted-wave polarized-orbital method

1989 ◽  
Vol 39 (4) ◽  
pp. 1756-1759 ◽  
Author(s):  
K. K. Mukherjee ◽  
P. S. Mazumdar ◽  
S. Brajamani
Keyword(s):  
Impact Ionization ◽  
Orbital Method ◽  
Distorted Wave ◽  
Positron Impact
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