Vortex nucleation by negative ion in superfluid He4

被引：0

作者：

Yamamoto, H ^{[1
]}

Ishikawa, K ^{[1
]}

机构：

[1] Yokohama City Univ, Grad Sch Integrated Sci, Kanazawa Ku, Yokohama, Kanagawa 2360007, Japan

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2003年 / 130卷 / 1-2期

关键词：

Experimental Data; Vortex; Magnetic Material; Energy Barrier; Barrier Height;

D O I：

10.1023/A:1021837800341

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In superfluid He-4, moving ions nucleate vortex loops by quantum tunneling through the barrier for T < 0.3 K, while thermal phonons activate the system over the barrier at higher temperature. The energy barrier height and the nucleation rate are calculated numerically, and these are well fitted with the experimental data for low pressures P < 16 bar and low electric fields E < 10(5) V/m.

引用

页码：1 / 13

页数：13

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