Electron impact excitation of 2p and 3p states of hydrogen at intermediate energies |
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Authors: | M ZM Kamali K Ratnavelu Y Zhou |
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Institution: | (1) Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur, Malaysia;(2) Institute of Mathematical Sciences, University of Malaya, Kuala Lumpur, Malaysia;(3) Institute of Atomic and Molecular Physics, Jilin University, 130012, Changchun, P.R. China |
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Abstract: | The recent theoretical work by Bartlett et al. J. Phys. B 38, L95 (2005)] and the latest measurements on the reduced Stokes parameters
,
and
for 54.4 eV electron impact excitation of the 2p state atomic hydrogen by Williams and Mikosza J. Phys. B 39, 4113 (2006)] has motivated the present work. A coupled-channel-optical calculation with 9 and 12 atomic states supplemented
with the continuum optical potentials for the stronger coupling channels has been performed. The calculated n = 2 and n =
3 differential cross sections and the reduced Stokes parameters are comparable with the state-of-the art calculations. There is closer agreement between the present calculations and the experimental measurements for the reduced
Stokes parameters
and
in the n = 2p excitation at 54.4 eV. The present CCO calculations also display good accord with the limited experimental
data for the reduced Stokes parameters in the n=3p excitation. |
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Keywords: | 34 10 +x General theories and models of atomic and molecular collisions and interactions 34 80 -i Electron scattering 34 80 Dp Atomic excitation and ionization by electron impact |
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