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Combined CI-HY studies of atomic states. IV. The four lowest 1S and four lowest 1P states of He and the lowest 1S and 1P states of H−1

✍ Scribed by James S. Sims; Stanley A. Hagstrom; John R. Rumble Jr.

Publisher: John Wiley and Sons
Year: 1976
Tongue: English
Weight: 704 KB
Volume: 10
Category: Article
ISSN: 0020-7608
DOI: 10.1002/qua.560100514

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✦ Synopsis

Abstract

Combined CI‐HY method calculations are reported for the ground and first three excited S states of He with an error on the order of 10^−7^ a.u. within the same 120‐term basis. For He ^1^P, the four lowest states are obtained with an error ≤2 × 10^−6^ a.u. within the same 102‐term basis. H^−1^ S and ^1^P states are also treated by the same CI‐HY technique. The utility of an spd Slater‐type orbital, r, v = 0, 1 basis is investigated, with indications that it might be an excellent basis for states of first row atoms.

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