Publications [#245568] of Robert P. Behringer

Papers Published
  1. Olafsen, JS; Behringer, RP, Thermal response of normal and superfluid helium to an AC heat flux, Physica B: Condensed Matter, vol. 194-196 no. PART 1 (1994), pp. 595-596 .

    Measurements of the thermal response, ΔT(ω), across a layer of helium in its normal and superfluid phases have been made for an AC heat source, Q(t)=Qoexp(iωt). Previous DC measurements below Tλ have indicated a dependence on the layer thickness, d, for κeff at low concentrations, X, suggesting an intrinsic length scale within the fluid. A ΔT(ω) profile is ideally suited to reveal any internal length scales of the fluid. The apparatus also permits d to be varied continuously and in situ from zero to 3mm. © 1994.