Use of the R-matrix method combined with the close-coupling approximation for calculations of negative ion binding energies

Autor:	Vo Ky Lan
Rok vydání:	1991
Předmět:	Physics Shape resonance Binding energy Bound state Linear independence Atomic physics Linear interpolation Condensed Matter Physics Orthonormality Atomic and Molecular Physics and Optics Ion R-matrix
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 24:833-848
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/24/4/010
Popis:	This paper includes a summary of R-matrix theory (in the inner region) and a discussion of how to solve the close-coupling equations exactly when calculating an orthonormal set of outer-region solutions by inward integration when all channels are closed. Techniques are described for obtaining these solutions, satisfying three necessary conditions for a correct bound state calculation: solution columns should: (i) have well defined asymptotic forms; (ii) have good linear independence at the matching point between the inner and outer region; and (iii) allow for accurate linear interpolation in the bound state energy Ek using scanning techniques which do not require estimates of such energies Ek to be provided. Test results for the bound state calculations for an ionic core, C2++e C+, and for a neutral core H+e H-.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a4b51d24ddc9e4fca7ab8d1e2673a59 https://doi.org/10.1088/0953-4075/24/4/010 Zobrazit plný text záznamu