Abstract
We have measured the resistive and reactive mutual friction coefficients and in rotating superfluid - at pressures of 1.6, 10, 20, and 29.3 bars. Near , diverges as , with , and tends to zero. Coefficients and that relate the force to , 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.
- Received 9 September 1994
DOI:https://doi.org/10.1103/PhysRevLett.74.750
©1995 American Physical Society