氦-3熔化压力方程

MELTING PRESSURE EQUATION FOR HELIUM-3

在广泛收集实验数据和理论关联式的基础上,提出了低温流体3He的宽温区、高精度熔化压力方程。该方程采用国际标准单位制,首次以统一而非分段的形式描述了3He在0．001 K-30 K宽温区熔化压力与温度的关系,方程计算值相对于406个实验数据点的最大和平均偏差分别为3．02％和0．106％。计算表明,该方程在0．31586 K时存在最小压力 2．93113 MPa,这一结论与以往的实验和理论研究非常吻合。

Based on a thorough survey of experimental data and theoretical correlations, a melting pressure equation for 3He valid in a wide range was developed. This nonsegment equation, in SI unit, precisely describes the pressure and temperature relation along the melting curve of 3He at temperatures from 0.001 K to 30 K. The maximum and the average differences between calculations by the melting pressure equation and 406 measurements are 3.02% and 0.106%, respectively. A minimum pressure 2.93113 MPa is predicted at 0.31586 K, which agrees with early experimental and theoritical studies fairly well.