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The van der Waals interaction of neutral atoms may be characterized by two-body constants C AB and three-body constants C ABC . A recent analysis of spectroscopic, refractive index and Verdet constant measurements has been combined with a simple technique for evaluating oscillator strength summations to give C AB for all pairs and C ABC for all triplets of the atoms H, He, Ne, Ar, Kr and Xe. The results are believed to be accurate to within 10%.
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Bell et al. (1966) studied this question.
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