The repulsive Σg+1 He2 potential obtained from total cross sections
- 1 September 1974
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 61 (5), 1658-1665
- https://doi.org/10.1063/1.1682159
Abstract
An improved apparatus for obtaining short‐range intermolecular potentials is described. The measured ground state He–He potential in the range 0.49 ≤ r ≤ 1.56 Å is V(r) = (215.3±9.4) × exp[−3.950±0.044)r] eV. This agrees extremely well with the results of molecular orbital theory, whereas earlier experiments were 25% lower, and is confirmed by a recent independent measurement in the range 0.9–1.5 Å. A comparison is also made with statistical model calculations.Keywords
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