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  • 1
    Electronic Resource
    Electronic Resource
    High-precision calculationsj of the 3,1 P 1 0 →1 S 0 E1 amplitudes for magnesium, calcium, and strontium (2000)
    Springer
    JETP letters 72 (2000), S. 595-598 
    Details
    ISSN: 1090-6487
    Keywords: 32.70.Cs ; 31.15.Md ; 31.25.Jf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High-precision calculations of the 3,1 P 1 0 (ns np→1 S 0(ns 2) E1 amplitudes were carried out for magnesium, calcium, and strontium (n=3, 4, and 5, respectively). The following results were obtained for the reduced matrix element 〈1 P 1 0 ‖d‖ 1 S 0〉 of electric dipole moment operator: 4.03(2) au for Mg, 4.91(7) au for Ca, and 5.28(9) au for Sr. These matrix elements are necessary for calculating the van der Waals coefficients C 6, which are used in evaluating the atomic scattering lengths. The latter determine the dynamics and stability of the Bose-Einstein condensate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1351197
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  • 2
    Electronic Resource
    Electronic Resource
    Calculations of energy levels for atoms with several valence electrons (1996)
    Springer
    JETP letters 63 (1996), S. 882-887 
    Details
    ISSN: 1090-6487
    Keywords: 31.15.Ar ; 31.15.Md ; 31.25.Jf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new ab initio method for doing high-accuracy calculations for atoms with more than one valence electron is described. An effective Hamiltonian for the valence electrons is formed using many body perturbation theory for the residual core-valence interaction. The configuration interaction method is used then to find the energy levels of the atom. Application to thallium shows that this method gives an accuracy of about 0.5% for the ionization potential and a few tenths of a percent for the first few energy intervals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567108
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    Paper (German National Licenses)
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