QUANTUM NUCLEATION OF VORTICES IN THE FLOW OF SUPERFLUID HE-4 THROUGH AN ORIFICE

被引:61
作者
IHAS, GG
AVENEL, O
AARTS, R
SALMELIN, R
VAROQUAUX, E
机构
[1] UNIV PARIS 11, PHYS SOLIDES LAB, F-91405 ORSAY, FRANCE
[2] UNIV FLORIDA, DEPT PHYS, GAINESVILLE, FL 32611 USA
[3] EINDHOVEN UNIV TECHNOL, DEPT PHYS, 5600 MB EINDHOVEN, NETHERLANDS
关键词
D O I
10.1103/PhysRevLett.69.327
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Flow measurements in ultrapure He-4 through a micron-size orifice at millikelvin temperatures show, for the first time, the transition from thermal to quantum nucleation of nanometer-size vortices below a crossover temperature of 0.147 K. These observations establish the close relationship between this type of critical flow and negative-ion motion in superfluid 4He and strongly suggest that the underlying mechanism, the nucleation of vortex half rings, is identical.
引用
收藏
页码:327 / 330
页数:4
相关论文
共 34 条
[11]   VELOCITY DEPENDENCE OF THE SUPERFLUID DENSITY OF HELIUM-II NEAR THE LAMBDA-POINT [J].
GINZBURG, VL ;
SOBYANIN, AA .
PHYSICS LETTERS A, 1979, 69 (06) :417-419
[12]  
GLABERSON WI, 1986, PROGR LOW TEMPERATUR, V9, pCH1
[13]   QUANTUM DECAY-RATES FOR DISSIPATIVE SYSTEMS AT FINITE TEMPERATURES [J].
GRABERT, H ;
OLSCHOWSKI, P ;
WEISS, U .
PHYSICAL REVIEW B, 1987, 36 (04) :1931-1951
[14]  
HANGGI P, 1990, REV MOD PHYS, V62, P251, DOI 10.1103/RevModPhys.62.251
[15]   THE BREAKDOWN OF SUPERFLUIDITY IN LIQUID-HE-4 .6. MACROSCOPIC QUANTUM TUNNELING BY VORTICES IN ISOTOPICALLY PURE HE-II [J].
HENDRY, PC ;
LAWSON, NS ;
MCCLINTOCK, PVE ;
WILLIAMS, CDH ;
BOWLEY, RM .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1990, 332 (1626) :387-414
[16]   CONTINUOUS-FLOW APPARATUS FOR PREPARING ISOTOPICALLY PURE HE-4 [J].
HENDRY, PC ;
MCCLINTOCK, PVE .
CRYOGENICS, 1987, 27 (03) :131-138
[17]   HEALING AND RELAXATION IN FLOWS OF HELIUM-II .3. PURE SUPERFLOW [J].
HILLS, RN ;
ROBERTS, PH .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (22) :4485-4499
[18]   MOTIONS IN A BOSE CONDENSATE .4. AXISYMMETRIC SOLITARY WAVES [J].
JONES, CA ;
ROBERTS, PH .
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1982, 15 (08) :2599-2619
[19]   QUANTIZED VORTICES IN AN IMPERFECT BOSE GAS AND BREAKDOWN OF SUPERFLUIDITY IN LIQUID HELIUM 2 [J].
KAWATRA, MP ;
PATHRIA, RK .
PHYSICAL REVIEW, 1966, 151 (01) :132-+
[20]   THERMODYNAMIC STABILITY OF SUPERFLUID FLOW THROUGH A CHANNEL [J].
KRAMER, L .
PHYSICAL REVIEW, 1969, 179 (01) :149-&