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  • PACS. 02.70.Dh Finite-element and Galerkin methods – 03.65.Ge Solutions of wave equations: bound states – 31.15.Ar Ab initio calculations  (1)
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  • 2001  (1)
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  • Springer  (1)
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  • 2004
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    Electronic Resource
    Electronic Resource
    High accuracy Dirac-finite-element (FEM) calculations for H 2 + and Th 2 179 + (2001)
    Springer
    The European physical journal 17 (2001), S. 167-173 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 02.70.Dh Finite-element and Galerkin methods – 03.65.Ge Solutions of wave equations: bound states – 31.15.Ar Ab initio calculations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: A two-dimensional, fully numerical approach to the four-component first-order Dirac-differential-equation utilizing the Finite-Element-Method (FEM) is employed for H 2 + and Th 2 179 + . Using elliptic-hyperbolic coordinates and further one-dimensional singular transformations, scaling transformations and extrapolation techniques (geometrical over iteration steps and logarithmic over grid points) we achieve for the molecules H 2 + and Th 2 179 + relative accuracies better than 10-12 for 1(1/2) g energies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170019
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