OSMOTIC PRESSURE OF He$sup 3$ IN LIQUID He$sup 4$, WITH PROPOSALS FOR A REFRIGERATOR TO WORK BELOW 1 K
OSMOTIC PRESSURE OF He$sup 3$ IN LIQUID He$sup 4$, WITH PROPOSALS FOR A REFRIGERATOR TO WORK BELOW 1 K
复制标题
He$sup 3$ 在液体 He$sup 4$ 中的渗透压，建议冰箱工作温度低于 1 K
DOI：
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发表时间：
1962
期刊：
影响因子：
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通讯作者：
E. Mendoza
中科院分区：
文献类型：
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作者：
H. London;G. R. Clarke;E. Mendoza
在0.8~1.2℃的低温下，对同位素He/sup_3/液体He/sup_4/溶液的渗透压进行了实验研究。超漏是一种填充细粉的管子，起到半透膜的作用，只允许超流体He/sup_4/通过。这些实验的结论是，测量的渗透压与从热力学关系和混合物的其他平衡性质，特别是它们的蒸汽压的热力学关系中预期的值是合理的一致。因此，在实验条件下，似乎已达到热力学平衡。本文的后半部分是关于He/sup_3/He/sup_4/绝热稀释过程中必须发生的冷却的研究。如果在低温下进行稀释，溶液分成两个相，则估计吸收的热量会很大。稀释后的溶液可以蒸馏、浓缩、再循环，制成连续动作的冰箱。它应该可以在0.1℃或更低的温度下运行。(身份验证)
An experimental study has been carried out of the osmotic pressure of solutions of the isotope He/sup 3/ in liquid He/sup 4/ at low temperatures, between 0.8 and 1.2 deg K. A superleak, a tube packed with a fine powder, acted as a semipermeable membrane which allowed only the superfluid He/sup 4/ to pass. The conclusion from these experiments was that the measured osmotic pressures were in reasonable agreement with values expected from the thermodynamic relations with other equilibrium properties of the mixtures, notably their vapor pressures. Thermodynamic equilibrium therefore seemed to have been attained under the conditions of the experiments. The second half of this paper concerns a study of the cooling which must take place during the adiabatic dilution of He/ sup 3/ by He/sup 4/. If the dilution is carried out at low temperatures where the solutions separate into two phases, the absorption of heat is estimated to be usefully large. After dilution the solution can be distilled, condensed and recirculated so as to make a continuously acting refrigerator. It should be possible to operate at temperatures of 0.1 deg K or below. (auth)