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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Continuous flow apparatus for preparing isotopically pure He-4
AU - Hendry, P. C.
AU - McClintock, Peter V. E.
PY - 1987/3
Y1 - 1987/3
N2 - 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.
AB - 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.
KW - cryostats
KW - helium
KW - separation techniques
KW - isotopic purification
U2 - 10.1016/0011-2275(87)90069-5
DO - 10.1016/0011-2275(87)90069-5
M3 - Journal article
VL - 27
SP - 131
EP - 138
JO - Cryogenics
JF - Cryogenics
SN - 0011-2275
IS - 3
ER -