Effect of Exchange and Absorption Potential in the Distorted Wave Calculation of Electron Impact Excitation of Auto Ionizing State of Rubidium

2017 ◽  
Vol 4 (2) ◽  
pp. 1-9
Author(s):  
V Agutu ◽  
C Singh
Keyword(s):  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Distorted Wave ◽  
Absorption Potential ◽  
Wave Calculation

scholarly journals The effect of exchange and absorption potential in the distorted wave calculation of electron impact excitation of the autoionizing state of caesium

2020 ◽  
Vol 1 (1) ◽  
pp. 39-46
Author(s):  
A. A. Ochieng ◽  
J Okumu ◽  
C S Singh
Keyword(s):  
Energy Range ◽  
Electron Impact ◽  
Cross Sections ◽  
Intermediate Energy ◽  
Impact Excitation ◽  
Experimental Result ◽  
Electron Impact Excitation ◽  
Distorted Wave ◽  
Autoionizing State ◽  
Absorption Potential

We have calculated the differential and integral cross sections for electron impact excitation of the lowest autoionizing level of caesium atoms in the energy range 13 – 500 eV using the distorted wave method. In this study we have used a complex distortion potential as the distortion potential both at the initial and the final channels. Our results are compared amongst themselves to establish the effect of exchange and imaginary absorption potentials. We also compared with other available theoretical and experimental results to determine the suitability of our present method. From the results it is seen that when an absorption potential is included in the distortion potential, the integral cross section moves closer to the experimental result in the intermediate energy range 19 – 40 eV.

Relativistic distorted-wave calculation of electron impact excitation of silver and gold

1996 ◽  
Vol 74 (11-12) ◽  
pp. 889-896 ◽  
Author(s):  
V. Zeman ◽  
R. P. McEachran ◽  
A. D. Stauffer
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Dominant Role ◽  
Incident Electron ◽  
Stokes Parameters ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Distorted Wave ◽  
Wave Calculation ◽  
Mott Scattering

Relativistic distorted-wave calculations were performed for the electron impact excitation of silver and gold to their first (np) 2P1/2,3/3 levels at incident electron energies of 30–100 eV. Results are reported for the differential and integrated cross sections, differential and integrated Stokes parameters, and generalized STU parameters. Mott scattering is found to play an increasingly dominant role at larger energies and scattering angles.

A Semi-relativistic Distorted Wave Calculation of Electron Impact Excitation of Gold

1999 ◽  
Vol 16 (9) ◽  
pp. 643-645 ◽  
Author(s):  
Jun-fang Gao ◽  
Wen-ning Pang ◽  
Hong Gao ◽  
Ren-cheng Shang
Keyword(s):  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Distorted Wave ◽  
Wave Calculation
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