Box-based convergent close-coupling method for solving Coulomb few-body problems

Journal Article · Sun Jun 01 04:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.060704· OSTI ID:20636506

Bray, I; Bartschat, K; Stelbovics, A T ^[1]

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1. Centre for Atomic, Molecular, and Surface Physics, School of Mathematical and Physical Sciences, Murdoch University, Perth 6150 (Australia)

We present an implementation of the convergent close-coupling (CCC) method, in which the Laguerre-based target states are replaced with box-based eigenstates. Discrete energies are obtained by taking the states that vanish at the box radius R{sub 0}, with convergence being established by simply varying R{sub 0}. Excellent agreement between box- and Laguerre-based CCC, exterior complex scaling, and renormalized experiment is obtained for one of the most difficult three-body Coulomb breakup problems, near-threshold electron-impact ionization of atomic hydrogen. The simplicity of the box-based CCC method is expected to lead to a greater understanding of the close-coupling formalism generally.

• OSTI ID: 20636506
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CONVERGENCE
COUPLING
EIGENSTATES
ELECTRON-ATOM COLLISIONS
ELECTRONS
HYDROGEN
IMPLEMENTATION
IONIZATION
THREE-BODY PROBLEM