Photolytic separation of isotopes in cryogenic solution

Details Photolytic separation of isotopes in cryogenic solution Photolytic separation of isotopes in cryogenic solution

B - Operations, Transporting

01

D

204/91.8

B01D 59/38 (2006.01) B01D 59/34 (2006.01)

Patent

CA 1131583

PHOTOLYTIC SEPARATION OF ISOTOPES IN CRYOGENIC SOLUTION ABSTRACT OF THE DISCLOSURE Separation of carbon isotopes by photolysis of CS2 in cryogenic solutions of nitrogen, krypton and argon with 206 nm light from an iodine resonance lamp is reported. The spectral distribution of the ultraviolet absorption depends on solvent. Thus, in liquid nitrogen the photolytic decomposition rate of 13CS2 is greater than that of 12CS2 (because the absorption of 206 nm radiation is greater for 13CS2), 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.

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