Activation Energy for Solid Nucleation in Overpressurized Superfluid He-4

被引：0

作者：

Tomoki Minoguchi

机构：

[1] The University of Tokyo,Institute of Physics

来源：

Journal of Low Temperature Physics | 2007年 / 148卷

关键词：

67.80.-s; 64.70.Dv; 68.55.Ac; 64.60.Qb; 64.60.My; 82.60.Nh;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Activation energy for solid nucleation in overpressurized superfluid He-4 is calculated. On the basis of a model free energy of solidification of superfluid He-4, I found that both the critical shape of nucleus and the activation energy deviate from the standard model (the ‘thin wall’ model) as pressure increases. These deviations are similar, even quantitatively, to what Harrowell and Oxtoby (J. Chem. Phys. 80:1639, 1984) calculated for solid nucleation in a supercooled classical liquid. The activation energy can be a few times greater than what the thin wall model predicts.

引用

页码：737 / 742

页数：5

共 29 条

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