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 - Forced oscillation of the A-B phase boundary in superfluid He-3.
AU - Bartkowiak, M.
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Haley, Richard P.
AU - Plenderleith, G. N.
AU - Pickett, George R.
AU - Skyba, P.
PY - 2000/7
Y1 - 2000/7
N2 - We present measurements conducted on the oscillating interface between superfluid He-3 A and B. The measurements, made at 150 mu K, are taken at frequencies between 100 mHz, where the boundary moves almost in thermal equilibrium with the fluid, and several kHz, where the boundary motion is highly non-linear and out of equilibrium. Driving the oscillations to higher amplitudes seems to produce different friction mechanisms dominant only after certain thresholds. As yet these phenomenon have defied any explanation, theoretical or otherwise.
AB - We present measurements conducted on the oscillating interface between superfluid He-3 A and B. The measurements, made at 150 mu K, are taken at frequencies between 100 mHz, where the boundary moves almost in thermal equilibrium with the fluid, and several kHz, where the boundary motion is highly non-linear and out of equilibrium. Driving the oscillations to higher amplitudes seems to produce different friction mechanisms dominant only after certain thresholds. As yet these phenomenon have defied any explanation, theoretical or otherwise.
KW - A-B boundary
KW - He-3 superfluid
KW - ultralow temperatures
U2 - 10.1016/S0921-4526(99)02483-7
DO - 10.1016/S0921-4526(99)02483-7
M3 - Journal article
VL - 284-28
SP - 240
EP - 241
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1
ER -