Document Type

Article

Publication Date

2011

Publication Title

Physical Review A - Atomic, Molecular, and Optical Physics

Volume

83

Issue

3

First Page

34503-1

Last Page

34503-4

DOI

10.1103/PhysRevA.83.034503

Abstract

We present improved calculations of variational energy eigenvalues for the 1s22s2S, 1s23s2S, and 1s22p2P states of lithium using basis sets with up to 30 224 terms in Hylleraas coordinates. The nonrelativistic energies for infinite nuclear mass are -7.4780603239101437(45) a.u. for 1s22s2S, -7. 3540984214443164(32) a.u. for 1s23s2S, and -7.4101565326516(5) a.u. for 1s22p2P, which represent the most accurate variational upper bounds to date. An important advantage of the basis sets with multiple distance scales is their exceptional numerical stability. © 2011 American Physical Society.

Comments

copyright American Physical Society http://dx.doi.org/10.1103/PhysRevA.83.034503

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