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Calculation of Differential Cross Sections for Electron Impact Excitation of $H$ and $He^+$

Calculation of Differential Cross Sections for Electron Impact Excitation of $H$ and $He^+$
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Year:    2014

Author:    Zhuo-Jin Lai, De-Feng Chen, Lin-Qing Pan, Xiao-Han Jiang, Yong-Liang Xu, Zhang-Jin Chen

Journal of Atomic and Molecular Sciences, Vol. 5 (2014), Iss. 4 : pp. 311–323

Abstract

We present the distorted wave Born approximation (DWBA) for electron impact excitation and a method to calibrate the DWBA. With the calibrated DWBA, the differential cross sections (DCS) for excitation of $H$ and $He^+$ from 1s to 2s and 2p are calculated and the results are compared with the absolute experimental measurements for $H$ at incident energies of 50 eV and 100 eV. It has been found that the theoretical results are in very good agreement with the experiment, which confirms the validity of the calibration procedure. This work prepares an efficient theoretical method for numerical simulations of non-sequential double ionization of $He$ in strong laser pulse in which laser-induced electron impact excitation of $He^+$ is involved.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/jams.022814.051414a

Journal of Atomic and Molecular Sciences, Vol. 5 (2014), Iss. 4 : pp. 311–323

Published online:    2014-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    13

Keywords:    electron impact excitation distorted wave Born approximation differential cross sections total cross sections.

Author Details

Zhuo-Jin Lai

De-Feng Chen

Lin-Qing Pan

Xiao-Han Jiang

Yong-Liang Xu

Zhang-Jin Chen

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