Comparison of the R-matrix and Hulthen-Kohn methods for a model multichannel scattering problem
Journal Article
·
· Phys. Rev. A; (United States)
Exact asymptotic wave functions are included in the basis set for variational calculations of the K matrix in a multichannel model problem. Rapid convergence to exact results is demonstrated for both the variational R-matrix method and for the restricted-interpolated-anamoly-free (RIAF) variant of the Hulthen-Kohn method. If ''irregular'' asymptotic functions are omitted, convergence of the R-matrix calculations is much less satisfactory. By a particular choice of the form of discrete basis functions, vanishing at a fixed radius r/sub 1/ in the model problem, the main computational steps of both methods are made to be identical.
- Research Organization:
- IBM Research Laboratory, San Jose, California 95193
- OSTI ID:
- 5935404
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 24:6; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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