TY - JOUR

T1 - A pumping experiment in dilute 3He-4He solutions at millikelvin temperatures

AU - Fisher, SN

AU - Guénault, A.M.

AU - Jackson, DA

AU - Pickett, George

AU - Torizuka, K

AU - Turner, RP

PY - 1995/8

Y1 - 1995/8

N2 - Very dilute He-3-He-4 solutions provide a model system for the study of the effects of magnetic polarisation. It was proposed by the Lancaster group(1) that a ''pumping'' effect of He-3 should be observed under appropriate conditions in these solutions, In a strong magnetic field gradient, the He-3 should be pumped from the low field region towards the high field region, in which the He-3 is polarised We have now observed this effect in 0.1% and 0.06% solutions, using a vibrating wire resonator in the low field region as the concentration indicator. The concentration change of a few percent under our present experimental conditions (9 T maximum field, 10 mK) is of the expected magnitude so that development of the technique can now be considered.

AB - Very dilute He-3-He-4 solutions provide a model system for the study of the effects of magnetic polarisation. It was proposed by the Lancaster group(1) that a ''pumping'' effect of He-3 should be observed under appropriate conditions in these solutions, In a strong magnetic field gradient, the He-3 should be pumped from the low field region towards the high field region, in which the He-3 is polarised We have now observed this effect in 0.1% and 0.06% solutions, using a vibrating wire resonator in the low field region as the concentration indicator. The concentration change of a few percent under our present experimental conditions (9 T maximum field, 10 mK) is of the expected magnitude so that development of the technique can now be considered.

KW - MK

KW - VISCOSITY

KW - MAGNETIC-FIELD

U2 - 10.1007/BF00751509

DO - 10.1007/BF00751509

M3 - Journal article

VL - 100

SP - 241

EP - 252

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3-4

ER -