Vortex mutual friction in rotating superfluid He3-B

T. D.C. Bevan, A. J. Manninen, J. B. Cook, A. J. Armstrong, J. R. Hook, H. E. Hall

Research output: Contribution to journalArticleScientificpeer-review

45 Citations (Scopus)

Abstract

We have measured the resistive and reactive mutual friction coefficients B and B′ in rotating superfluid He3-B at pressures of 1.6, 10, 20, and 29.3 bars. Near Tc, Bρnρ diverges as (Tc-T)a, with a-0.7, and B′ρnρ-2 tends to zero. Coefficients d and d that relate the force to vn-vL, the relative velocity of normal fluid and vortex lines show relaxation-dissipation behavior tending slightly towards resonant dissipation. Within our experimental error there is no clear indication of the expected vortex core transition in our data at 20 and 29.3 bars.

Original languageEnglish
Pages (from-to)750-753
Number of pages4
JournalPhysical Review Letters
Volume74
Issue number5
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

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