Artificial-channel method for multichannel-decay-resonance energies and widths

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.43.3474· OSTI ID:5837642

Du, M L; Dalgarno, A ^[1]

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1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (US)

In the artificial-channel method, an {ital N}-channel Hamiltonian describing the multichannel decay of a system is embedded in an ({ital N}+1)-channel Hamiltonian. The resonance energies and partial widths of the original {ital N}-channel physical problem are related simply to the parameters in the Lorentzian forms of the inelastic-scattering probabilities of the ({ital N}+1)-channel problem, the artificial-channel method permitting a straightforward study of a half-collision process with algorithms developed for full scattering processes. The utility of the method is demonstrated numerically for a model problem of Child and Lefebvre (Mol. Phys. 34, 379 (1977)).

• OSTI ID: 5837642
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 43:7; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DECAY
ENERGY-LEVEL TRANSITIONS
EXCITATION
INELASTIC SCATTERING
LEVEL WIDTHS
MOLECULES
MULTILEVEL ANALYSIS
RESONANCE
SCATTERING