Vortex Dissipation in Superfluid Third Sound Flows

Document
Document

This thesis probes possible mechanisms behind anomalous freedecays commonly observed in superfluid helium third sound flows. Several models, based on vortex dissipation, for the additional dissipation these anomalous freedecays imply are constructed, tested, and modified to be consistent with the observed characteristics. This work concludes that these simple models involving only vortex friction and a creation energy are insufficient to explain the observed characteristics. From this conclusion a model is proposed that holds promise for future study.

    Item Description
    Name(s)
    Thesis advisor: Ellis, Fred
    Date
    April 15, 2009
    Extent
    65 pages
    Language
    eng
    Genre
    Physical Form
    electronic
    Discipline
    Rights and Use
    In Copyright – Non-Commercial Use Permitted
    Digital Collection
    PID
    ir:1619