Original scientific paper
On the truncation scheme for the hyperspherical harmonics expansion basis for two-electron atoms
Rakhi Chattopadhyay
; Department of Physics, University of Calcutta, 92 A.P.C. Road, Calcutta 700 009, India
Tapan Kumar Das
; Department of Physics, University of Calcutta, 92 A.P.C. Road, Calcutta 700 009, India
Abstract
In spite of the fact that the usual hyperspherical harmonics expansion method has a number of advantages, the rate of convergence is quite slow for diffused atomic systems interacting through long-range Coulomb forces. An efficient truncation scheme of the basis, in which only l1 = 0 partial waves for K > KM1, are retained is proposed. This results in a marginal increase in computation beyond that for KM1. Calculation of various quantities indicate that the truncation scheme is particularly useful for diffused atomic systems.
Keywords
Hrčak ID:
299591
URI
Publication date:
1.3.1996.
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