Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Pressure dependence of vortex tunneling in He II.
AU - Hendry, P. C.
AU - Lawson, N. S.
AU - McClintock, Peter V. E.
N1 - Proceedings of the 19th International Conference on Low Temperature Physics (LT19), Brighton, 16-22 August 1990.
PY - 1990/8
Y1 - 1990/8
N2 - Measurements of the rate nu at which negative ions nucleate charged vortex rings in isotopically pure superfluid He-4 for electric fields E, temperatures T and pressures P within the ranges 10^3 < E < 10^6 V/m, 75 < T < 500 mK, 12 < P < 23 bar show that the energy barrier impeding the tunneling process is strongly dependent on pressure. Minima observed in nu(T) are ascribed to phonon damping.
AB - Measurements of the rate nu at which negative ions nucleate charged vortex rings in isotopically pure superfluid He-4 for electric fields E, temperatures T and pressures P within the ranges 10^3 < E < 10^6 V/m, 75 < T < 500 mK, 12 < P < 23 bar show that the energy barrier impeding the tunneling process is strongly dependent on pressure. Minima observed in nu(T) are ascribed to phonon damping.
U2 - 10.1016/S0921-4526(90)81228-G
DO - 10.1016/S0921-4526(90)81228-G
M3 - Journal article
VL - 165-16
SP - 757
EP - 758
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1
ER -