Thermal Boundary Resistance Between Solid 3He and Cerium Magnesium Nitrate
We have measured the thermal boundary resistance between powdered cerium magnesium nitrate (CMN), (average particle diameter ~50μ) and solid He3 (23.9 cm3/mole, ~15ppm He4) and liquid He3 (S.V.P.) at several different applied magnetic field strengths in the temperature range between 45 mK and 250 mK. At temperatures below 70 mK and fields greater than ~55G, the observed measurements of the magnetic Kapitza resistance are consistent with the T2 dependence of that resistance predicted by R. A. Guyer1 for the solid He and the T dependence for the liquid observed by others at lower temperatures2,3 and theoretically predicted.1,4,5
KeywordsAverage Particle Diameter Thermal Boundary Resistance High Temperature Approximation Adiabatic Demagnetization Powdered Cerium
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- (8).K. W. Mess, Thesis, Leiden, 1969 (unpublished).Google Scholar
- (10).Eq. 3 assumes that the CMN is in thermal contact with a reservoir at constant temperature. We have observed this to be true under all the conditions of our experiment.Google Scholar
- (11).J. Bishop, thesis, University of California at San Diego, 1973 (unpublished).Google Scholar
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