A model potential for computing total ionization cross sections of atoms and molecules by electron impact

2021 ◽  
Vol 75 (12) ◽  
Author(s):  
Alan Guilherme Falkowski ◽  
Márcio H. F. Bettega ◽  
Marco A. P. Lima ◽  
Luiz G. Ferreira
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Model Potential ◽  
Ionization Cross ◽  
Atoms And Molecules ◽  
Total Ionization ◽  
Ionization Cross Sections

scholarly journals The Electron Impact Ionization Cross Sections of Methanol, Ethanol and 1-Propanol

Atoms ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 60 ◽  
Author(s):  
Yogesh Kumar ◽  
Manoj Kumar ◽  
Sachin Kumar ◽  
Rajeev Kumar
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Impact Ionization ◽  
Experimental Results ◽  
Oscillator Strengths ◽  
Ionization Cross ◽  
Total Ionization ◽  
Plane Wave Born Approximation ◽  
Ionization Cross Sections ◽  
Good Agreement

In the present investigation, the plane-wave Born approximation was employed to calculate the total ionization cross sections by electron impact of methanol, ethanol and 1-propanol from the threshold of ionization to 10 MeV. This method requires continuum generalized oscillator strengths (CGOSs). The two different semi-phenomenological expressions of CGOS, given by Mayol and Salvat and Weizsacker and Williams, along with approximated form of the continuum optical oscillator strength (COOS) by Khare et al. were used. Furthermore, the average of the above two CGOSs was also used. The calculated ionization cross sections were compared to the available previous theoretical results and experimental data. Out of three CGOSs, the present results with the average CGOS were found in good agreement with the available experimental results for all the considered molecules. Collision parameters CRP were also calculated from 0.1 to 100 MeV and the calculations were found to be in excellent agreement with the experimental results of Reike and Prepejchal.

scholarly journals Applicability of Vaisburd and Evdokimov Model to Ionic Targets

2012 ◽  
Vol 4 (2) ◽  
pp. 307
Author(s):  
F. Sabrin ◽  
M. A. Uddin ◽  
A. K. F. Haque
Keyword(s):  
Experimental Data ◽  
Electron Impact ◽  
Cross Sections ◽  
Empirical Model ◽  
Impact Ionization ◽  
Computer Code ◽  
Linear Least Squares ◽  
Ionization Cross ◽  
Atoms And Molecules ◽  
Ionization Cross Sections

The Vaisburd and Evdokimov proposed an empirical model to calculate the electron impact single ionization cross-sections of atoms and molecules. The model has been applied to some atoms and molecules. To examine the efficiency of the model, the present work applies the model to calculate cross-sections for  Ne-isonuclear series Ne+, Ne2+, Ne3+, Ne4+, Ne5+, Ne6+, Ne7+, Ne8+, Ne9+ . The separate sets of values of the parameters of the model are determined by comparison with the available experimental data using a non-linear least-squares fitting computer code. Keywords: Electron impact ionization; Empirical model; Ionic targets. © 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi: http://dx.doi.org/10.3329/jsr.v4i2.8704 J. Sci. Res. 4 (2), 307-313 (2012)

Electron-impact total ionization cross sections of CF4, C2F6, and C3F8

1999 ◽  
Vol 110 (8) ◽  
pp. 3811-3822 ◽  
Author(s):  
H. Nishimura ◽  
Winifred M. Huo ◽  
M. A. Ali ◽  
Yong-Ki Kim
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Ionization Cross ◽  
Total Ionization ◽  
Ionization Cross Sections
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