Bradley, D. Ian and Fisher, Shaun N. and Guénault, Anthony M. and Haley, Richard P. and Pickett, George R. and Skyba, P. and Tsepelin, Viktor and Whitehead, R. C. V. (2006) Coupling between solid He-3 on aerogel and superfluid He-3 in the low temperature limit. American Institute of Physics Conference Proceedings, 850. pp. 243-244. ISSN 0094-243XFull text not available from this repository.
We have cooled liquid He-3 contained in a 98% open aerogel sample surrounded by bulk superfluid He-3-B at zero pressure to below 120 mu K. The aerogel sample is placed in a quasiparticle blackbody radiator cooled by a Lancaster-style nuclear cooling stage to similar to 200 mu K. We monitor the temperature of the He-3 inside the blackbody radiator using a vibrating wire resonator. We find that reducing the magnetic field on the aerogel sample causes substantial cooling of all the superfluid inside the blackbody radiator. We believe this is due to the demagnetization of the solid He-3 layers on the aerogel strands. This system has potential for achieving extremely low temperatures in the confined fluid.
|Journal or Publication Title:||American Institute of Physics Conference Proceedings|
|Uncontrolled Keywords:||superfluidity ; aerogel ; solid ordering ; He-3|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr Richard P. Haley|
|Deposited On:||03 Feb 2009 09:10|
|Last Modified:||26 Jul 2012 16:11|
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