Analytical Representation of Total Cross-Sections for Electron Atom Scattering: Application to Atomic Helium

• Authors: A. Mansouri , S. Houamer , M. Moulay
• Languages of publication: EN

Abstracts

EN

Based on the series expansion formalism, an analytical approach is proposed to evaluate the total cross-sections induced by electron impact excitation. As an illustration, an analytical expression of the total cross-section of the double excitation of helium atom by electron impact is obtained for the 2p^2 ^3P and 2p3p ^1P transitions within the framework of the distorted wave Born approximation. The available experimental data are well reproduced by the obtained expression of the total cross-section which is function of the only parameter of the incident electron energy. Comparisons are also made with numerical calculations.

Keywords

EN

31.15.-p; 02.70.-c

Discipline

• 31.15.-p: Calculations and mathematical techniques in atomic and molecular physics(see also 02.70.-c Computational techniques, in mathematical methods in physics)
• 02.70.-c: Computational techniques; simulations(for quantum computation, see 03.67.Lx; for computational techniques extensively used in subdivisions of physics, see the appropriate section; for example, see 47.11.-j Computational methods in fluid dynamics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2003
• Volume: 104
• Issue: 1
• Pages: 25-34

Dates

published

2003-07

received

2002-07-30

revised

2003-04-29

Contributors

author

A. Mansouri

• Département de physique - Faculté des sciences, Université Ferhat Abbas, Sétif, Algeria

author

S. Houamer

• Département de physique - Faculté des sciences, Université Ferhat Abbas, Sétif, Algeria

author

M. Moulay

• CRNA, 2 Bd Frantz Fanon, B.P. 399, Alger-gare, Algeria

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Identifiers

DOI

10.12693/APhysPolA.104.25