液氦中的亚势垒空化区
Sub-barrier cavitation regime in liquid helium
摘要：
本文从模型薛定谔方程出发，考虑了液氦中空穴的隧穿机制，得到了3 He和4 He的负压阈值随温度的变化关系。本文给出了在Lenard-Jones相互作用势近似下计算平面和曲面界面的表面张力系数的结果。它表明，温度依赖性的临界压力在空化开始是逐步的性质。得到的临界压力值与实验数据符合得很好。
英文摘要：
In this paper, on the basis of the model Schrödinger equation, we consider the tunneling mechanism of cavitation in liquid helium and obtain threshold values of negative pressure as a function of temperature for 3He and 4He. The results of calculating the surface tension coefficients for flat and curved interfaces, obtained in the approximation of the Lenard-Jones interaction potential, are presented. It is shown that the temperature dependence of the critical pressure at which cavitation begins is stepwise in nature. The obtained critical pressure values are in satisfactory agreement with the experimental data.
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