Angular distributions in the double ionization of argon by fast electron impact

2021 ◽  
Author(s):  
Amine Herbadji ◽  
Imene Kada ◽  
Abdelaziz Mansouri ◽  
C Dal Cappello
Keyword(s):  
Experimental Data ◽  
Electron Impact ◽  
Fast Electron ◽  
Born Approximation ◽  
Double Ionization ◽  
Angular Distributions ◽  
Initial State ◽  
Final State ◽  
Fast Electrons ◽  
Distorted Waves

Abstract A model describing the two electrons ejected by distorted waves is applied to the study of the double ionization of argon by fast electrons (~ 5500 eV). The correlation is also partially taken into account both in the final state and in the initial state. The results obtained by our model as well as by other models also based on the first Born approximation are compared with the available experimental data.

Angular distributions in the double ionization of noble gases by electron impact

1992 ◽  
Vol 23 (4) ◽  
pp. 389-396 ◽  
Author(s):  
C. Cappello ◽  
J. Langlois ◽  
M. C. Cappello ◽  
B. Joulakian ◽  
A. Lahmam-Bennani ◽  
...  
Keyword(s):  
Electron Impact ◽  
Noble Gases ◽  
Double Ionization ◽  
Angular Distributions

Angular distributions in the double ionization of DNA bases by electron impact

2016 ◽  
Vol 49 (22) ◽  
pp. 225201 ◽  
Author(s):  
M F Khelladi ◽  
A Mansouri ◽  
C Dal Cappello ◽  
I Charpentier ◽  
P A Hervieux ◽  
...  
Keyword(s):  
Electron Impact ◽  
Double Ionization ◽  
Dna Bases ◽  
Angular Distributions

The ionization of H and He + by electron impact

1965 ◽  
Vol 287 (1408) ◽  
pp. 105-122 ◽  
Keyword(s):  
Cross Sections ◽  
Ground State ◽  
Born Approximation ◽  
Threshold Energy ◽  
Initial State ◽  
Ionization Cross ◽  
Final State ◽  
Comparison With Experiment ◽  
Oppenheimer Approximation ◽  
Ionization Cross Sections

The ionization cross-sections of H and He + from the ground state and excited 2 s state for incident electron energies from threshold to about four times threshold energy are calculated. The strong coupling between the hydrogenic 1 s , 2 s and 2 p states is explicitly allowed for in the initial state, and the final state is taken to be an appropriate combination of Coulomb wave functions of the two outgoing electrons. Comparison with experiment for ground-state ionization shows that the method is an improvement over the Born approximation particularly for He + . New results are presented for the Born approximation in He + ionization and for the Born-Oppenheimer approximation for both H and He + ionization. Finally, conclusions are drawn from the results concerning the validity of methods for calculating ionization cross-sections from excited states.

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