12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

97%

97% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Continuous flow apparatus for preparing isotopi...
View graph of relations

« Back

Continuous flow apparatus for preparing isotopically pure He-4

Research output: Contribution to journalJournal article

Published

<mark>Journal publication date</mark>03/1987
<mark>Journal</mark>Cryogenics
Issue3
Volume27
Number of pages8
Pages131-138
<mark>Original language</mark>English

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.