Search Results - "Bradley, D.I."

Andreev Reflection in Superfluid 3He: A Probe for Quantum Turbulence by Bradley, D.I, Guénault, A.M, Haley, R.P, Pickett, G.R, Tsepelin, V

“…Andreev reflection, familiar in superconducting systems, shows a much more extensive set of behaviors in the p -wave condensate of superfluid 3 He. We discuss…”
Get full text

Andreev Reflection in Superfluid 3 He: A Probe for Quantum Turbulence by Bradley, D.I., Guénault, A.M., Haley, R.P., Pickett, G.R., Tsepelin, V.

“…Andreev reflection, familiar in superconducting systems, shows a much more extensive set of behaviors in the p-wave condensate of superfluid 3 He. We discuss…”
Get full text

Probing Bogoliubov Quasiparticles in Superfluid 3He with a ‘Vibrating-Wire Like’ MEMS Device by Defoort, M., Dufresnes, S., Ahlstrom, S. L., Bradley, D. I., Haley, R. P., Guénault, A. M., Guise, E. A., Pickett, G. R., Poole, M., Woods, A. J., Tsepelin, V., Fisher, S. N., Godfrin, H., Collin, E.

“…We have measured the interaction between superfluid 3 He–B and a micro-machined goalpost-shaped device at temperatures below 0.2 T c . The measured damping…”
Get full text

Possible vortex production by a vibrating wire in superfluid 3He–B by Bradley, D.I, Guénault, A.M

“…We observe spectacular features on the force–velocity characteristic of a vibrating wire resonator in superfluid 3He–B at ultralow temperatures. There are both…”
Get full text

Decay of Pure Quantum Turbulence in Superfluid {sup 3}He-B by Bradley, D.I., Clubb, D.O., Fisher, S.N., Guenault, A.M., Haley, R.P., Matthews, C.J., Pickett, G.R., Tsepelin, V., Zaki, K.

“…We describe measurements of the decay of pure superfluid turbulence in superfluid {sup 3}He-B, in the low temperature regime where the normal fluid density is…”
Get full text

Emission of Discrete Vortex Rings by a Vibrating Grid In Superfluid {sup 3}He-B: A Precursor to Quantum Turbulence by Bradley, D.I., Clubb, D.O., Fisher, S.N., Guenault, A.M., Haley, R.P., Matthews, C.J., Pickett, G.R., Tsepelin, V., Zaki, K.

“…We report a transition in the vorticity generated by a grid moving in the B phase of superfluid {sup 3}He at T<<T{sub c}. The evolution of the vorticity after…”
Get full text

Spatial extent of quantum turbulence in non-rotating superfluid [formula omitted]He–B by Bradley, D.I., Fisher, S.N., Guénault, A.M., Lowe, M.R., Pickett, G.R., Rahm, A.

“…Quantum turbulence has been shown to reflect a beam of quasiparticles in the B-phase of superfluid 3 He by Andreev processes. We have investigated the…”
Get full text

Direct observation of the Andreev reflection of a quasiparticle beam by quantum turbulence in superfluid [formula omitted]-B by Bradley, D.I., Fisher, S.N., Guénault, A.M., Lowe, M.R., Pickett, G.R., Rahm, A.

“…A beam of quasiparticles from a black-body radiator is directed at a localized region of quantum turbulence generated by a vibrating wire resonator driven at…”
Get full text

Phonon excitation of quasiparticles in niobium and tantalum superconducting tunnel junction photon detectors by Wigmore, J.K, Boyd, P, Steele, A.C, Kozorezov, A.G, Bradley, D.I

“…We report phonon pulse measurements of quasiparticle (qp) self-recombination and trapping by Abrikosov vortices in Nb and Ta superconducting tunnel junctions…”
Get full text

Preliminary measurements on coupling between superfluid 3He and kapton or aerogel in the low temperature limit by BRADLEY, D. I, FISHER, S. N, GUENAULT, A. M, HALEY, R. P, MULDERS, N, PICKETT, G. R, SKYBA, P, WHITEHEAD, R. C. V

“…We report preliminary measurements of the coupling between superfluid 3He-B and Kapton or Aerogel samples at very low temperatures. The small Kapton or Aerogel…”
Get full text

The detection of low energy neutrons and γ-rays by superfluid 3He, a potential dark matter detector by Bradley, D.I, Follows, M.R, Hayes, W.M, Sloan, T

“…We have demonstrated in a pilot study using an existing experiment that superfluid 3He at 100 μK can be used as a nuclear recoil detector sensitive to neutron…”
Get full text

Heat pulse studies of quasiparticle dynamics in superconducting tunnel junction photon detectors by Steele, A.C., Boyd, P., Kozorezov, A.G., Wigmore, J.K., Bradley, D.I.

“…We describe experiments to characterise the responsivity of superconducting tunnel junction (STJ) X-ray detectors in which the absorbed photons were simulated…”
Get full text