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The calculation of dynamic polarizabilities and long-range disperson energy coefficients

✍ Scribed by J.J.C. Teixeira-Dias; A.J.C. Varandas

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
336 KB
Volume
26
Category
Article
ISSN
0009-2614

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✦ Synopsis

The variation-perttibation method previously used in the calculation of dynamic polarizabilities of the hyd!ogen atom and long-range dispersion energy coefficients between hydrogen atoms is applied, within the framework of uncoupled Hartree-Fock perturbation theory. to the dipole and quadrupole polarizabilities of the helium atom. It is shown that, simple fist order wavefunctions built up from Shter-type 2p and 3d orbitals with optimized frequencydependent exponents yield quite accurate values for the dynamic polarizabilities of the helium atom and for the longrange dispersion energy coefficients.

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