Temporal response of the thermal boundary resistance in superfluid helium

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.61· OSTI ID:76409

Olafsen, J S; Behringer, R P ^[1]

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1. Department of Physics, Duke University, Durham, North Carolina 27708-0305 (United States)

We report measurements of the thermal response {Delta}{ital T}({omega}) across a layer (height {ital d}) of superfluid helium to an ac heat flux, {ital Q}({ital t})={ital Q}{sub 0}{ital e}{sup {ital i}{omega}{ital t}}. In this case {Delta}{ital T}({omega}) yields the boundary resistance, {ital R}{sub {ital b}}. Measurements show a peak in {Delta}{ital T}({omega}) in the same temperature regime as the anomalous dc boundary resistance. The peak frequency and amplitude depend on {ital T} and {ital Q}{sub 0}, but not {ital d}. The range of {ital d} was 0{le}{ital d}{le}3 mm. The sample has a nominal {sup 3}He concentration of {ital X}=2{times}10{sup {minus}7}.

• OSTI ID: 76409
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 1 Vol. 52; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BINARY MIXTURES
FREQUENCY DEPENDENCE
HELIUM 3
HELIUM 4
SUPERFLUIDITY
TEMPERATURE RANGE 0000-0013 K
THERMAL BOUNDARY RESISTANCE