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Isotopic Purification of Helium by Differential Distillation Below the Lambda-point.

Authors
Tully-PC
Source
NTIS: PB 244 793 :19 pages
Link
NIOSHTIC No.
10007622
Abstract
The Bureau of Mines, in a continuing effort to improve processes and methods of helium purification, has developed a differential distillation method for removing helium-3 from helium-4. Differential distillation at 4.2 to 1.6 K was used to reduce the helium-3 in helium-4 from about 200 to less than 1 part per billion. The results from four stills ranging in size from 1 to 25 liters are reported. The method has the potential to be adapted to commercial-scale separations.
Publication Date
19750101
Document Type
IH; Report of Investigation;
Fiscal Year
1975
NTIS Accession No.
PB-244793
NTIS Price
A03
Identifying No.
RI 8054
NIOSH Division
HEFO;
Source Name
NTIS: PB 244 793
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