Title

Thermal Expansion of a Dilute 3He-4He Mixture

Document Type

Article

Publication Date

2007

Abstract

Using a titanium capacitive dilatometer, originally designed to measure the thermal expansion of solids as a standard capacitor, we measured the dielectric constant, molar volume, and thermal expansion of the liquid 3He-4He mixture in the dilute phase of a dilution refrigerator from about 15 mK to 800 mK. The thermal expansion is negative over the full temperature range. A minimum in the thermal expansion near 100 mK may be associated with the onset of Fermi-liquid behavior for the 3He component of the mixture.

Advisor

George Schmiedeshoff

Department

physics

Support

Virginia Reid Moore Fellowship

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