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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 17 (1980), S. 689-695 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The identity recently presented by Hiller, Sucher, and Feinberg relating the expectation value of a δ-function operator to that of another operator is rederived for the case of the Fermi contact interaction and the required expectation values expressed in terms of the spin-density and conditional spin-density matrices. The ground state of the H atom is considered as an example and it is shown that, for approximation by a linear combination of Gaussian orbitals, use of the identity improves the estimate of spin density at the nucleus by an order of magnitude or more.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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