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Coupling between solid He-3 on aerogel and superfluid He-3 in the low temperature limit.

Bradley, D. Ian and Fisher, Shaun N. and Guénault, A.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 0094-243X

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Abstract

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.

Item Type: Article
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
ID Code: 23514
Deposited By: Dr Richard P. Haley
Deposited On: 03 Feb 2009 09:10
Refereed?: Yes
Published?: Published
Last Modified: 17 Jul 2013 10:23
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23514

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