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Abstract : We report a neutron scattering experiment on thin helium films deposited on exfoliated graphite. The results can be explained by taking into account the effects of Van der Waals forces between the substrate and the helium atoms.

Keywords : neutron diffraction examination of materials superfluid helium 4 surface phenomena neutron scattering exfoliated graphite Van der Waals forces thin He films superfluid sup 4 He surface effects

Author: B. Lambert D. Salin J. Joffrin R. Scherm



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