Calculations are presented of the equilibrium configuration (''dimple'') of a Na-2 or Li-2 molecule absorbed on the surface of liquid He-3 or liquid He-4. The computed dimer binding energies are somewhat greater than those of the monomers. The lowest energy occurs when the molecule lies flat, but the energy in the erect orientation is only similar to 1 K higher (implying relatively free rotation). The center of mass lies similar to 4 Angstrom above the liquid surface and the dimple has a depth similar to 3 Angstrom. An exceptional case is Li-2 on liquid He-3, for which the surface state is unstable relative to solvation in the bulk.

STRUCTURE OF ALKALI DIMERS AT THE SURFACE OF LIQUID-HELIUM

ANCILOTTO, FRANCESCO;TOIGO, FLAVIO
1995

Abstract

Calculations are presented of the equilibrium configuration (''dimple'') of a Na-2 or Li-2 molecule absorbed on the surface of liquid He-3 or liquid He-4. The computed dimer binding energies are somewhat greater than those of the monomers. The lowest energy occurs when the molecule lies flat, but the energy in the erect orientation is only similar to 1 K higher (implying relatively free rotation). The center of mass lies similar to 4 Angstrom above the liquid surface and the dimple has a depth similar to 3 Angstrom. An exceptional case is Li-2 on liquid He-3, for which the surface state is unstable relative to solvation in the bulk.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/123802
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