• DocumentCode
    3461284
  • Title

    A novel acoustic lens in superfluid 3He

  • Author

    Bullock, G.L. ; Shivaram, B.S.

  • Author_Institution
    Dept. of Phys., Virginia Univ., Charlottesville, VA, USA
  • fYear
    1988
  • fDate
    2-5 Oct 1988
  • Firstpage
    1105
  • Abstract
    The authors propose a novel scheme to achieve focusing of sound waves in superfluid 3He. This scheme exploits the magnetic field dependence of the superfluid phase diagram and the difference in the sound propagation characteristics of the A- and B-phases. Central to the scheme is the dispersion caused by the sound wave´s strong interaction with order-parameter collective modes that exist in the B-phase. Details of a magnet that will be used to achieve such a lens are presented
  • Keywords
    acoustic devices; magnetic lenses; superfluid helium-3; 3He superfluid; A-phase; B-phase; acoustic lens; characteristics; dispersion; magnet; magnetic field dependence; order-parameter collective modes; phase diagram; sound propagation; sound waves focusing; Acoustic beams; Acoustic propagation; Acoustic pulses; Attenuation; Frequency; Helium; Lenses; Magnetic fields; Magnetic liquids; Physics;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Ultrasonics Symposium, 1988. Proceedings., IEEE 1988
  • Conference_Location
    Chicago, IL
  • Type

    conf

  • DOI
    10.1109/ULTSYM.1988.49549
  • Filename
    49549
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3461284