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

Journal Article · Wed Dec 15 00:00:00 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, Vol. 82, Issue 6; Other Information: DOI: 10.1103/PhysRevA.82.062708; (c) 2010 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

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