The He-He potential energy in the region of the van der Waals minimum
- 1 January 1967
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 12 (5) , 475-480
- https://doi.org/10.1080/00268976700100601
Abstract
The energy of interaction of two helium atoms near their van der Waals minimum has been calculated using a perturbation expansion. An SCF wave function is used to calculate the first-order energy and the second-order (dispersion) energy is taken from previous work. An energy minimum of -3·3 × 10-5 a.u. at a separation of 5·5 a.u. is obtained, in good agreement with experimental results.Keywords
This publication has 4 references indexed in Scilit:
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- Long-Range Interaction of Helium Atoms. A. CalculationsThe Journal of Chemical Physics, 1966
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- The theory of intermolecular forces in the region of small orbital overlapProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1965