Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The wall potential in the pores of Vycor glass experienced by He-3 quasiparticles in a dilute He-3-He-4 solution.
AU - Reeves, P. A.
AU - Tvalashvili, G.
AU - Brussaard, Peter
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Pickett, George R.
PY - 2002/3
Y1 - 2002/3
N2 - We have studied the Fermi fluid, He-3 in (3)'He-(4) He solution, confined within the narrow channels of Vycor glass. Continuous wave NAIR signals were observed in two almost identical coils, one containing bulk solution and the other the solution in Vycor glass. Three different solutions (0.1, 1.6, and 6%) have been studied over the temperature range 3 mK to above I K The measurements relate to two exclusion effects of He-3 from Vycor glass. One concerns potential energy, and we demonstrate the partial exclusion of He-3 independent of concentration as the temperature is lowered from high temperatures down to around 200 mK, thus giving an experimental measure of the van der Waals forces between the wall and the helium. The second effect is the additional quantum exclusion which arises from the influence of quantum wire confinement on the kinetic energy, as the temperature is progressively lowered below 50 mK in the very dilute (0.1%) solution.
AB - We have studied the Fermi fluid, He-3 in (3)'He-(4) He solution, confined within the narrow channels of Vycor glass. Continuous wave NAIR signals were observed in two almost identical coils, one containing bulk solution and the other the solution in Vycor glass. Three different solutions (0.1, 1.6, and 6%) have been studied over the temperature range 3 mK to above I K The measurements relate to two exclusion effects of He-3 from Vycor glass. One concerns potential energy, and we demonstrate the partial exclusion of He-3 independent of concentration as the temperature is lowered from high temperatures down to around 200 mK, thus giving an experimental measure of the van der Waals forces between the wall and the helium. The second effect is the additional quantum exclusion which arises from the influence of quantum wire confinement on the kinetic energy, as the temperature is progressively lowered below 50 mK in the very dilute (0.1%) solution.
KW - helium-3
KW - helium-4
KW - vycor
U2 - 10.1023/A:1014295915855
DO - 10.1023/A:1014295915855
M3 - Journal article
VL - 126
SP - 1457
EP - 1470
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 5-6
ER -