Convergent variational calculation of positronium-hydrogen-atom scatteringlengths

Authors
Adhikari, SK Mandal, P
Citation
Sk. Adhikari et P. Mandal, Convergent variational calculation of positronium-hydrogen-atom scatteringlengths, J PHYS B, 34(6), 2001, pp. L187-L194
Citations number
31
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN journal
09534075 → ACNP
Volume
34
Issue
6
Year of publication
2001
Pages
L187 - L194
Database
ISI
SICI code
0953-4075(20010328)34:6<L187:CVCOPS>2.0.ZU;2-4
Abstract
We present a convergent variational basis-set calculational scheme for elas tic scattering of the positronium atom by the hydrogen atom in S wave. High ly correlated trial functions with appropriate symmetry are needed to achie ve convergence. We report convergent results for scattering lengths in atom ic units for both singlet (= 3.49 +/-0.20) and triplet (= 2.46 +/-0.10) sta tes.