An efficient method for computing relativistic mixing in complex spectra: application to sextet-quartet mixing in Cr II

Autor:	T M Luke, K Aashamar
Rok vydání:	1990
Předmět:	Reduction (complexity) Physics Coupling Nuclear magnetic resonance Oscillator strength Structure (category theory) Level structure Algebraic number Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line Mixing (physics) Computational physics
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 23:L733-L738
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/23/22/001
Popis:	Structure and oscillator strength calculations are performed for the Cr II ion in intermediate coupling. Certain important correlation configurations contribute large numbers of levels which makes the problem very demanding in computing resources. A method of selecting a 'natural' basis for the algebraic expansion states is demonstrated. This method results in very substantial reduction in the size of the problem and allows one to investigate large relativistic mixing problems that might otherwise be intractible. The method is applied to the level structure arising from mixing the 4p 6Do, 6Po and 4Po terms in Cr II. Results are reported for oscillator strengths for transition from these levels to the levels arising from 3d5 6S and 4s 6D terms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::849a2402cdae5f011fd6a245f88abb6d https://doi.org/10.1088/0953-4075/23/22/001 Zobrazit plný text záznamu