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


PB244793

Publication Date 1975
Personal Author Tully, P. C.
Page Count 25
Abstract In a continuing effort to improve processes and methods of helium purification, a 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 by mole. 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.
Keywords
  • Helium
  • Isotope separation
  • Purification
  • Cryogenics
  • Distillation
  • Helium 3
  • Helium 4
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 99F - Physical & Theoretical Chemistry
Corporate Authors Bureau of Mines, Amarillo, Tex. Helium Operations Technical Services Unit.
Document Type Technical Report
Title Note Rept. of investigations 1975.
NTIS Issue Number 197523
Isotopic Purification of Helium by Differential Distillation Below the Lambda-Point.
Isotopic Purification of Helium by Differential Distillation Below the Lambda-Point.
PB244793

  • Helium
  • Isotope separation
  • Purification
  • Cryogenics
  • Distillation
  • Helium 3
  • Helium 4
  • Bureau of Mines
  • 99F - Physical & Theoretical Chemistry
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