Propagating phonons in liquid 4He

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Wyatt, A.F.G. and Lockerbie, N.A. and Sherlock, R.A. (1989) Propagating phonons in liquid 4He. Journal of Physics: Condensed Matter, 1 (22). pp. 3507-3522. ISSN 0953-8984 (http://dx.doi.org/10.1088/0953-8984/1/22/010)

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Abstract

at T approximately=0.1 K is studied as a function of pressure input power and propagation distance. Using a superconducting tunnel junction detector it is found that a single injected pulse can form two propagating pulses at low pressures but only one at high pressures. It is shown that three-phonon scattering can explain this behaviour. At low pressures, one group of phonons propagates ballistically while another group consists of strongly interacting phonons which travel at the ultrasonic velocity.

ORCID iDs

Wyatt, A.F.G., Lockerbie, N.A. ORCID logoORCID: https://orcid.org/0000-0002-1678-3260 and Sherlock, R.A.;
  • Item type:Article
    ID code:17757
    Dates:
    Date
    Event
    5 June 1989
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Strathprints Administrator
    Date deposited:17 May 2010 10:40
    Last modified:11 Nov 2024 09:14
    URI:https://strathprints.strath.ac.uk/id/eprint/17757
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