3He melting pressure temperature scale

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W.P. Halperin, C.N. Archie, R.C. Richardson, Finn Berg Rasmussen

The latent heat for solidification of **3He has been measured along the **3He melting curve between 23 and 1 mK. A temperature scale is established which depends only on measurements of heat, pressure and volume, and on the condition that the entropy of solid **3He approaches R ln 2 at high temperatures. The A feature of the melting curve which suggests itself as a thermometric fixed point is found to be T//A equals 2. 75 plus or minus 0. 11 mK. The agreement between this value and independent measurements of T//A, based on nuclear or electronic paramagnetism, Johnson noise thermometry or on properties of liquid **3He, is briefly discussed
Original languageEnglish
Title of host publicationProc of Int Cryog Eng Conf, 6th (ICEC6); Grenoble, Fr, USA; ; 11 May 1976 through 14 May 1976
Number of pages4
Publication date11 May 1976
Publication statusPublished - 11 May 1976

ID: 126476468