Density of Superfluid Helium Droplets

1997/05/08 by Jan Harms, J. P. Toennies, J. Peter Toennies +2 · 6 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat

paper · pdf · doi:10.1103/physrevb.58.3341

published as Phys. Rev. B, 58 (1998) 3341 · 27 pages, REVTeX, 5 postscript figures

arxiv created 1997/05/08 · openalex publication_date 1998/08/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The classical integral cross sections of large superfluid 4He_N droplets and the number of atoms in the droplets (N=10³-10⁴) have been measured in molecular beam scattering experiments. These measurements are found to be in good agreement with the cross sections predicted from density functional calculations of the radial density distributions with a 10-90 % surface thickness of 5.7Å. By using a simple model for the density profile of the droplets a thickness of about 6-8Åis extracted directly from the data.

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