The structure of large 3He-4He mixed drops around a dopant molecule

Abstract

We have investigated how helium atoms are distributed within a mixed ${}^3$He${}_{N_3}$-${}^4$He${}_{N_4}$ large drop with $N_3\gg N_4$. For drops doped with a SF${}_6$ molecule or a Xe atom, we have found that the number of ${}^3$He atoms within the volume containing the first two solvation shells increases when $N_4$ decreases in a way such that these dopants may be in a superfluid environment for $N_4\ge$ 60, which gradually disappears as $N_4$ decreases. The result is in qualitative agreement with recent experimental data.

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