Differences in the detachment of electron bubbles from superfluid 4He droplets versus nonsuperfluid 3He droplets

被引：38

作者：

Farnik, M ^{[1
]}

Henne, U ^{[1
]}

Samelin, B ^{[1
]}

Toennies, JP ^{[1
]}

机构：

[1] Max Planck Inst Stromungsforsch, D-37073 Gottingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.81.3892

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The rate of detachment of electron bubbles inside size-selected He-4 and He-3 droplets (10(5)-10(7) atoms) has been measured. At zero electric field the lifetimes of 4He droplets increase with size from 10(-3) to 0.2 s, orders of magnitude smaller than previously predicted. With increasing fields the detachment gradually increases for 4He droplets, whereas a sharp threshold was found at 1.45 kV/cm for He-3 droplets, independent of size. A simple dynamical model which accounts for superfluidity in the 4He droplets versus a viscous dynamics in He-3 can explain the observations. [S0031-9007(98)07487-0].

引用

页码：3892 / 3895

页数：4

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