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

doi:10.1103/PhysRevLett.74.750

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

^*Corresponding author for this work

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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 language	English
Pages (from-to)	750-753
Number of pages	4
Journal	Physical Review Letters
Volume	74
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.74.750
Publication status	Published - 1995
MoE publication type	A1 Journal article-refereed

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10.1103/PhysRevLett.74.750

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title = "Vortex mutual friction in rotating superfluid He3-B",

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.",

author = "Bevan, {T. D.C.} and Manninen, {A. J.} and Cook, {J. B.} and Armstrong, {A. J.} and Hook, {J. R.} and Hall, {H. E.}",

year = "1995",

doi = "10.1103/PhysRevLett.74.750",

language = "English",

volume = "74",

pages = "750--753",

journal = "Physical Review Letters",

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T1 - Vortex mutual friction in rotating superfluid He3-B

AU - Bevan, T. D.C.

AU - Manninen, A. J.

AU - Cook, J. B.

AU - Armstrong, A. J.

AU - Hook, J. R.

AU - Hall, H. E.

PY - 1995

Y1 - 1995

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevLett.74.750

DO - 10.1103/PhysRevLett.74.750

M3 - Article

AN - SCOPUS:0038505189

SN - 0031-9007

VL - 74

SP - 750

EP - 753

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

ER -

Vortex mutual friction in rotating superfluid He3-B

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