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

Bray, I., Bartschat, K. and Stelbovics, A.T. (2003) Box-based convergent close-coupling method for solving Coulomb few-body problems. Physical Review A - Atomic, Molecular, and Optical Physics, 67 (6).

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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 R0, with convergence being established by simply varying R0. 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.

Item Type: Journal Article
Murdoch Affiliation: School of Mathematical and Physical Sciences
Publisher: 2010 The American Physical Society
Copyright: © 2003 The American Physical Society
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