Ritz variational method for the high‐lying nonautoionizing doubly excited 1,3Fe states of two‐electron atoms |
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Abstract: | Energy eigenvalues of nonautoionizing doubly excited states originating from 2pnf ( ) configuration of two‐electron atoms have been calculated by expanding the basis set in explicitly correlated Hylleraas coordinates under the framework of Ritz variational method. A detailed discussion on the evaluation of correlated basis integrals is given. The energy eigenvalues of a number of these doubly excited states are being reported for the first time especially for the high lying states. The effective quantum numbers ( ) for the states mentioned above have been calculated by using the theory of quantum defect. |
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Keywords: | doubly excited states Hylleraas coordinates two‐electron atoms variational method |
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