Published November 19, 1985 | Version v1
Patent Metadata-only

Photolytic separation of isotopes in cryogenic solution

Creators

Description

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 occuring in the infrared

Availability note (English)

U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50.

Additional details

Publishing Information

Imprint Pagination
vp.
IPC:
Int. Cl. B01D 59/00.
IPC
Int. Cl. B01D 59/00.
Patent number
US patent document 4,554,060/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
17068753
Subject category
S07: ISOTOPES AND RADIATION SOURCES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ABSORPTION; ARGON; CARBON SULFIDES; CARBON 12; CARBON 13; COMPARATIVE EVALUATIONS; CRYOGENICS; DISSOLUTION; ISOTOPE SEPARATION; KRYPTON; LIGHT SOURCES; NITROGEN; PHOTOLYSIS; SOLUTIONS; ULTRAVIOLET SPECTRA; VISIBLE RADIATION
Descriptors DEC
CARBON COMPOUNDS; CARBON ISOTOPES; CHALCOGENIDES; CHEMICAL REACTIONS; DECOMPOSITION; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; EVALUATION; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HOMOGENEOUS MIXTURES; ISOTOPES; LIGHT NUCLEI; MIXTURES; NONMETALS; NUCLEI; RADIATION SOURCES; RADIATIONS; RARE GASES; SEPARATION PROCESSES; SPECTRA; STABLE ISOTOPES; SULFIDES; SULFUR COMPOUNDS

Optional Information

Notes
PAT-APPL-69151.