Photolytic separation of isotopes in cryogenic solution

Patent ·

OSTI ID:5269929

Freund, S M; Maier, II, W B; Holland, R F; Battie, W H

Separation of carbon isotopes by photolysis of CS/sub 2/ in cryogenic solutions of nitrogen, krypton and argon with 206 nm light from an iodine resonance lamp is reported. The spectral distributionn of the ultraviolet absorption depends on solvent. Thus, in liquid nitrogen the photolytic decomposition rate of /sup 13/CS/sub 2/ is greater than that of /sup 12/CS/sub 2/ (because the absorption of 206 nm radiation is greater for /sup 13/CS/sub 2/), whereas in liquid krypton and liquid argon the reverse is true. The shift in ultraviolet spectrum is a general phenomenon readily characterized as a function of solvent polarizability, and exhibits behavior similar to that for vibrational transitions occurring in the infrared.

• DOE Contract Number: W-7405-ENG-26
• Assignee: TIC; EDB-80-084844; ERA-05-029394
• Patent Number(s): None
• OSTI ID: 5269929
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400203* -- Isotope Exchange & Isotope Separation-- (-1987)
400500 -- Photochemistry
ARGON
CARBON 12
CARBON 13
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON SULFIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DECOMPOSITION
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FLUIDS
ISOTOPE SEPARATION
ISOTOPES
KRYPTON
LIGHT NUCLEI
LOW TEMPERATURE
NITROGEN
NONMETALS
NUCLEI
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RARE GASES
SEPARATION PROCESSES
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS