Application of the hyperspherical hidden-crossing method to positronium formation in positron-lithium collisions

Journal Article · Mon Sep 01 04:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.032720· OSTI ID:20640194

Ward, S J; Shertzer, J ^[1]

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1. Department of Physics, University of North Texas, Denton, Texas 76203, USA (United States)

The hyperspherical hidden-crossing method (HHCM) has been applied to s-, p-, and d-wave positronium formation in positron-lithium collisions in the energy range 0-1.8 eV, using a model potential to describe the atomic core. The calculations have provided a test of the HHCM. The s-, p-, and d-wave positronium formation cross sections are reported and compared with variational and close-coupling calculations. A minimum is obtained in the s-wave positronium formation cross section which is due to the Stuckelberg phase having a value of {pi}. The cross sections have also been computed including the correction term which emerges from the one-Sturmian theory.

• OSTI ID: 20640194
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 68; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CORRECTIONS
COUPLING
CROSS SECTIONS
D WAVES
EV RANGE
LITHIUM
POSITRON-ATOM COLLISIONS
POSITRONIUM
POSITRONS
POTENTIALS
S WAVES
VARIATIONAL METHODS