EVIDENCE FOR CONDENSATION OF HE3 ATOMS ON SURFACE OF BUBBLES IN LIQUID HE4

被引：31

作者：

DAHM, AJ

机构：

[1] Physics Department, University of Pennsylvania, Philadelphia

[2] Physics Department, Case Western Reserve University, Cleveland

来源：

PHYSICAL REVIEW | 1969年 / 180卷 / 01期

关键词：

D O I：

10.1103/PhysRev.180.259

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A phenomenological model is presented to explain the reduction in the critical velocity for vortex-ring creation by negative ions in liquid helium when small concentrations of He3 impurities are added. The model is based on the assumption that the surface state for a He3 atom has a lower energy than the bulk state. This results in an enhanced concentration of He3 atoms on the surface of the negative ions. This change in the surface affects the flow of liquid helium in the boundary layer around the ion. The effects of the difference in the surface of the positive and negative ions on the critical velocity is discussed in both the continuous and instantaneous vortex-ring creation models. © 1969 The American Physical Society.

引用

页码：259 / &

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