Few-atom 3He–4He mixed molecules

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Abstract
The existence of seven helium molecules, consisting of admixtures of up to five atoms of the two isotopes, is found on the basis of variational calculations using realistic phenomenological helium–helium potentials. The smaller mass of 3He has a significant effect on the binding energies, sizes, and particle distributions of these molecules. Also, a generalization of Tjon’s line to other few‐body systems is discovered.