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Continuous flow apparatus for preparing isotopically pure He-4.

Hendry, P. C. and McClintock, Peter V. E. (1987) Continuous flow apparatus for preparing isotopically pure He-4. Cryogenics, 27 (3). pp. 131-138. ISSN 0011-2275

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Abstract

A He-4 isotopic purification cryostat has been developed, capable of sustained operation in continuous flow. Starting from a feedstock of helium of the natural isotopic ratio, He-3/He-4 = X3 = 10^-7, it yields a purified product for which X3 < 5 X 10^-13 at a production rate of 3.3 STP m3/h. The isotopically purified He-4 is being used for a variety of applications, including quantum evaporation experiments, studies of ion motion at the He II/vacuum interface, down scattering and containment of ultra-cold neutrons, and investigations of the breakdown of superfluidity in He-4.

Item Type: Article
Journal or Publication Title: Cryogenics
Uncontrolled Keywords: cryostats ; helium ; separation techniques ; isotopic purification
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 32321
Deposited By: Professor P. V. E. McClintock
Deposited On: 23 Mar 2010 10:54
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 17:08
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/32321

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