Experimental determination of the molar volume and derivation of the expansion coefficient, entropy change on compression, compressibility, and first-sound velocity for liquid3He from 35 to 1200 mK and from the saturation pressure to 24 atm
Experimental determination of the molar volume and derivation of the expansion coefficient, entropy change on compression, compressibility, and first-sound velocity for liquid3He from 35 to 1200 mK and from the saturation pressure to 24 atm
复制标题
实验测定液体 3He 从 35 到 1200 mK 以及从饱和压力到 24 atm 的摩尔体积和膨胀系数、压缩熵变、可压缩性和第一声速的推导
DOI：
10.1007/bf00629709
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发表时间：
1971
影响因子：
2
通讯作者：
D. W. Osborne
中科院分区：
文献类型：
--
作者：
B. Abraham;D. W. Osborne
在35-1200 mK的温度范围内和从蒸气压到24 atm的温度范围内，通过测量介电常数，确定了液态~ 3 He的摩尔体积V（P，T）。为了计算等压膨胀系数αP、等温压缩系数κKT和第一声速c 1，将摩尔体积拟合为解析表达式;膨胀系数进行数值积分以获得压缩熵变。在均匀的温度和压力下，V（P，T）的值和导出的量以表格形式给出。由这一工作发现V（0，0）=36.873± 0.015cm ~ 3/mole，c_1（0，0）= 178.4m/sec，比目前公认的值183.4m/sec约低2.5%。
The molar volume of liquid3He,V(P, T), was determined from measurements of the dielectric constant over the temperature range 35–1200 mK and from the vapor pressure to 24 atm. Analytical expressions were fitted to the molar volumes in order to calculate the isobaric expansion coefficient αP, the isothermal compressibility κKT, and the first-sound velocityc1; the expansion coefficient was integrated numerically to arrive at the entropy change on compression. Values ofV(P, T) and the derived quantities are presented in tabular form at even temperatures and pressures. From this work it was found thatV(0, 0)=36.873±0.015 cm3/mole and thatc1(0, 0)=178.4 m/sec, about 2.5% lower than the presently accepted value of 183.4 m/sec.