https://doi.org/10.1140/epjd/e2007-00317-0
Electron impact excitation of 2p and 3p states of hydrogen at intermediate energies
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
Corresponding author: a kuru052001@gmail.com
Received:
11
July
2007
Revised:
5
October
2007
Published online:
28
November
2007
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.
PACS: 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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
