Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Possible influence of thermal rotons on vortex nucleation by negative ions in pressurised HeII below 1 K.
AU - Stamp, P. C. E.
AU - McClintock, Peter V. E.
AU - Fairbairn, W. M.
PY - 1979/8/14
Y1 - 1979/8/14
N2 - A new technique has been developed for measuring the nucleation rate nu of negatively charged vortex rings in HeII when the temperature T, pressure P and electric field E are such that the bare-ion drift velocity is limited principally by roton emission. For P = 25 bar, E = 7.9 x l0^5 V/m and 0.7 < T < 0.9 K, the relation nu(T) = 8.0 x l0^7 exp( - 6.2/T) was obtained, which suggests that the magnitude of nu may be closely related to the thermal roton density
AB - A new technique has been developed for measuring the nucleation rate nu of negatively charged vortex rings in HeII when the temperature T, pressure P and electric field E are such that the bare-ion drift velocity is limited principally by roton emission. For P = 25 bar, E = 7.9 x l0^5 V/m and 0.7 < T < 0.9 K, the relation nu(T) = 8.0 x l0^7 exp( - 6.2/T) was obtained, which suggests that the magnitude of nu may be closely related to the thermal roton density
U2 - 10.1088/0022-3719/12/15/001
DO - 10.1088/0022-3719/12/15/001
M3 - Journal article
VL - 12
SP - L589-L593
JO - Journal of Physics C: Solid State Physics
JF - Journal of Physics C: Solid State Physics
SN - 0022-3719
IS - 15
ER -