Many-body calculations of the hyperfine interaction of some excited states of alkali atoms, using approximate Brueckner or natural orbitals
作者： Ingvar Lindgren , Johannes Lindgren , Ann-Marie M�rtensson
DOI: 10.1007/BF01437866
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摘要: The theory of maximum-overlap or Brueckner orbitals and natural Orbitals is reviewed for closed-shell systems. A technique described to calculate approximate systems with a single valence electron, this applied together the linked-diagram expansion effective operators evaluate hyperfine interaction some excited states alkali atoms. It found that it in way possible reproduce reasonably well also highly perturbed interactions excitedd states, which not low-order based on HF orbitals. Numerical results are given 5d state K 4d Rb, where good experimental information available.
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