APS » PROLA » Phys. Rev. A » Volume 59 » Issue 4

Phys. Rev. A 59, R2559 - R2562 (1999)

Calculation of the He- 1s2s2 2S resonance using fully correlated Hylleraas functions

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Y. K. Ho
Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei, Taiwan, Republic of China

Zong-Chao Yan
Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario, Canada K1A 0R6

Rapid Communication Received 19 October 1998

The 1s2s2 2S resonance parameters in e--He scattering are calculated using the method of complex-coordinate rotation with Hylleraas functions. A fully correlated basis with all six interparticle coordinates between the three electrons and the nucleus is used to represent the wave function. The resonance energy and width are calculated to computational accuracies (relative error) of six parts in 106 and 2%, respectively. A comparison is made with other calculations and high-resolution experiments.


©1999 The American Physical Society

URL: http://link.aps.org/abstract/PRA/v59/pR2559
DOI: 10.1103/PhysRevA.59.R2559
PACS: 32.80.Dz, 32.80.Cy, 31.25.Jf

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