Vortex mutual friction in rotating superfluid 3He

J. R. Hook, A. J. Manninen, J. B. Cook, H. E. Hall

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)


The Manchester rotating cryostat has been used to measure the longitudinal and transverse coefficients of vortex mutual friction in the A and B phases of superfluid 3He. In the B phase the dominant contribution to the mutual friction is scattering of excitations off occupied bound states in the vortex core. The A phase results are explained quantitatively by assuming that doubly quantised continuous vortices are created with a dynamics determined by the equation of motion of the orbital vector I; the measurements enable us to put an upper limit on the orbital inertia of less than 0.01h{stroke} per Cooper pair. History-dependent textural effects which had to be overcome in order to make meaningful measurements in the A phase are explained by noting that for a given rotation direction the most stable vortices can be formed more easily from one direction of uniform l texture than the other.

Original languageEnglish
Pages (from-to)2930-2936
Number of pages7
JournalCzechoslovak Journal of Physics
Issue numberSUPPL. 6
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed


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