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S -wave resonances of the negative positronium ion and stability of a system of two electrons and an arbitrary positive charge

S -wave resonances of the negative positronium ion and stability of a system of two electrons and... We have used a Pekeris-type wave function, expressed on a Sturmian basis in terms of perimetric coordinates, in conjunction with the complex coordinate rotation method, to obtain well-converged estimates of the positions and widths of various S e 1 and S e 3 resonances of Ps. Calculations employing bases with one and two length scales were performed. We compare our results to earlier estimates. We also discuss the minimum positive charge that a particle of arbitrary mass must possess in order to bind two electrons. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

S -wave resonances of the negative positronium ion and stability of a system of two electrons and an arbitrary positive charge

Physical Review A , Volume 71 (5) – May 1, 2005
7 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2005 The American Physical Society
ISSN
1094-1622
DOI
10.1103/PhysRevA.71.052505
Publisher site
See Article on Publisher Site

Abstract

We have used a Pekeris-type wave function, expressed on a Sturmian basis in terms of perimetric coordinates, in conjunction with the complex coordinate rotation method, to obtain well-converged estimates of the positions and widths of various S e 1 and S e 3 resonances of Ps. Calculations employing bases with one and two length scales were performed. We compare our results to earlier estimates. We also discuss the minimum positive charge that a particle of arbitrary mass must possess in order to bind two electrons.

Journal

Physical Review AAmerican Physical Society (APS)

Published: May 1, 2005

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