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Title: Dielectric constant of atomic fluids with variable polarizability

Journal Article · · Proc. Natl. Acad. Sci. U.S.A.; (United States)

The Clausius-Mossotti function for the dielectric constant is expanded in terms of single atom and pair polarizabilities, leading to contributions that depend on both the trace and the anisotropy of the pair-polarizability tensor. The short-range contribution of the anisotropic part to the pair polarizabilities has previously been obtained empirically from light scattering experiments, whereas the trace contribution is now empirically determined by comparison to dielectric experiments. For helium, the short-range trace part agrees well with electronic structure calculations, whereas for argon qualitative agreement is achieved.

OSTI ID:
6229205
Journal Information:
Proc. Natl. Acad. Sci. U.S.A.; (United States), Vol. 77:6
Country of Publication:
United States
Language:
English