Two-center convergent close-coupling calculations for positron-lithium collisions

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.062708· OSTI ID:21528889

Lugovskoy, A V; Kadyrov, A S; Bray, I; Stelbovics, A T ^[1]

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1. Department of Imaging and Applied Physics, Curtin University, Perth 6150 (Australia)

We report on two-center convergent close-coupling calculations of positron-lithium collisions. The target is treated as one active electron interacting with an inert ion core. The positronium formation channels are taken into account explicitly utilizing both negative- and positive-energy Laguerre-based states. A large number of channels and high partial waves are used to ensure the convergence of the cross sections. We find the Ramsauer-Townsend minimum in total and elastic cross sections at an impact energy E of about 0.0016 eV. As found previously for H and He, the contributions to the breakup cross section from both the Li and the Ps centers become the same as the threshold is approached.

• OSTI ID: 21528889
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CONVERGENCE
COUPLING
CROSS SECTIONS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EV RANGE
FERMIONS
IONS
LEPTONS
LITHIUM
METALS
PARTIAL WAVES
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POSITRONIUM