Dispersion coefficients for Li+–H and Li+–He systems with coulomb and screened coulomb potentials |
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| Authors: | Sabyasachi Kar Y K Ho |
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| Institution: | 1. Center for Theoretical Atomic and Molecular Physics, The Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, People's Republic of China;2. Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23‐166, Taipei, Taiwan 106, Republic of China |
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| Abstract: | Exploiting powerful computational aspects and highly correlated exponential wave functions for two‐electron atoms, we have investigated the effects of screened Coulomb interaction on the hexadecapole polarizability of Li+(11S), and the dispersion coefficients C6, C8, C10, and C12 for interaction of Li+ with H and He atoms in their ground states. The dispersion coefficients and hexadecapole polarizability for different screening parameters ranging from 0 to 1.0 a are reported. In the unscreened case, the hexadecapole polarizability of Li+, and the dispersion C12 coefficients for Li+–H and Li+–He system are reported for the first time in the literature. The C6, C8, and C10 coefficients for the unscreened cases are comparable with the reported results. © 2011 Wiley Periodicals, Inc. Int J Quantum Chem, 2011 |
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| Keywords: | hexadecapole polarizability dispersion coefficients exponential correlated wave functions screened Coulomb potentials |
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