饱和液体氦-3的粘度性质  

Viscosity behavior of saturated liquid ~3He

作　　者：黄永华[1] 王晓建[1] 王如竹[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《低温与超导》2010年第1期1-5,28,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金项目(50806047);上海市浦江人才计划资助

摘　　要：文中揭示了低温液态氦-3在其饱和蒸气压下粘度随温度状态参数变化的反常规律,首次提出了3He在0.003K至其临界温度3.3157K温区内完整的气液相平衡曲线粘度方程。该方程计算值与高精度实验数据偏差小于±0.7%,并且在极低温条件下光滑过渡为由量子理论预测的理论极限。这项工作是研究氦-3在整个温度和压力区间上粘度性质行为特性的起点,不仅是构建全区间粘度方程的重要边界,而且对于理解费米-狄拉克量子统计规律在低温下的作用规律具有指导意义。The abnormal viscosity behavior of liquid 3He under its vapor pressure is discussed.An equation is proposed for the viscosity on the gas-liquid equilibrium line at temperatures from 0.003K to 3.3175K.The estimated uncertainty of the equation upon the measurements is ±0.7%.It smoothly joins the theoretical limit predicted by the quantum theory at extremely low temperatures.This phase boundary equation,along with the discussions,are not only a starting point for studying the viscosity behavior of 3He in a wider range of temperature and pressure,but also could lead to a better understanding of Fermi-Dirac statistics mechanism on transport properties of 3He.

关 键 词：氦-3(3He) 粘度方程 输运性质 饱和液体 

分 类 号：O645.16[理学—物理化学] TS236.9[理学—化学]