A Perturbation-Variation Calculation of Eigenvalues
- 1 February 1961
- journal article
- Published by IOP Publishing in Proceedings of the Physical Society
- Vol. 77 (2) , 467-470
- https://doi.org/10.1088/0370-1328/77/2/330
Abstract
A variational method, based upon perturbation theory, is used to calculate the eigenvalues of the helium sequence. With a trial wave function containing essentially only one variable parameter, the resulting errors range from 0.3 ev for H- to 0.01 ev for Ne8+.Keywords
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