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Calculation of alkali-metal dimers on the basis of a model perturbation theory

  • Optics And Spectroscopy
  • Published:
Russian Physics Journal Aims and scope

Abstract

On the basis of pseudopotential theory, within the framework of a formally accurate model perturbation theory of Rayleigh—Schrödinger type with a zero-approximation inoculating potential, the calculation of some diatomic alkali molecules in homo- and heteronuclear variants LiM (M = Li, Na, K, Rb, Cs, Fr) is considered. A local model potential of Gell-Mann type is adopted as the zero-approximation potential. The calculation results for the energy parameters — in particular, the energy of dissociation — are given; some of these results are obtained here for the first time. The calculation demonstrates the fundamental role of two basic second-order perturbation-theory effects in achieving acceptable accuracy: polarizational interaction of the valence particles through the core; and mutual screening of these particles.

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Authors
  1. A. V. Glushkov
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  2. V. A. Efimov
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  3. E. D. Gopchenko
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  4. S. V. Dan’kov
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  5. V. N. Polishchuk
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  6. I. M. Shpinareva
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Additional information

Odessa Hydrometeorological Institute. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 106–113, May, 1998.

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Glushkov, A.V., Efimov, V.A., Gopchenko, E.D. et al. Calculation of alkali-metal dimers on the basis of a model perturbation theory. Russ Phys J 41, 492–498 (1998). https://doi.org/10.1007/BF02766513

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  • DOI: https://doi.org/10.1007/BF02766513

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