Relativistic distorted-wave excitation cross sections of F-like selenium by electron collision
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Abstract
RDWB procedures were applied to study the excitation cross sections induced by electron collision for F-like selenium. GRASP2 code was used for atomic structure calculations. By approaching from the `post' form approximation, it was possible to overcome the complexity involved in using non-orthogonal orbits. From the multipole expansion of the inter-electron potential used, it was found justifiable to add a correction term to the exchange Slater integrals due to the non-orthogonal orbitals. Comparisons are made of the resulting cross sections for excitation from the three low-lying levels as calculated using 113-level and 279-level MCDF configuration expansion both between themselves as well as with existing data. More than 10% in difference has been found in these comparisons.
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Source Title
Journal of Physics B: Atomic, Molecular and Optical Physics
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Date
1999-03-14
DOI
10.1088/0953-4075/32/5/007
Type
Article