VORTEX NUCLEATION IN SUPERFLUID HE-4 PROBED BY HE-3 IMPURITIES

被引：26

作者：

VAROQUAUX, E

IHAS, GG

AVENEL, O

AARTS, R

机构：

[1] CTR ETUD SACLAY,SERV PHYS ETAT CONDENSE,F-91191 GIF SUR YVETTE,FRANCE

[2] UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611

[3] EINDHOVEN UNIV TECHNOL,DEPT PHYS,5600 MB EINDHOVEN,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.70.2114

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The critical velocity for the onset of phase slips in the flow of superfluid He-4 through a micro-orifice has been found to be strongly affected at temperatures below approximately 0.1 K by minute quantities of He-3 impurities, in the few parts per 10(9) range. It is shown that this effect yields essential information on the vortex nucleation mechanism and in particular the local superfluid velocity at which vortices are formed, which is 22 m/s in these experiments.

引用

页码：2114 / 2117

页数：4

共 27 条

[1]

AVENEL O, 1990, PHYSICA B, V165, P751, DOI 10.1016/S0921-4526(90)81225-D

[2] OBSERVATION OF A REMANENT VORTEX-LINE DENSITY IN SUPERFLUID-HELIUM [J].