Photolytic separation of isotopes in cryogenic solution
Abstract
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 distribution 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.
- Inventors:
-
- Santa Fe, NM
- (Los Alamos, NM)
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 865673
- Patent Number(s):
- 4554060
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- photolytic; separation; isotopes; cryogenic; solution; carbon; photolysis; cs; solutions; nitrogen; krypton; argon; 206; nm; light; iodine; resonance; lamp; reported; spectral; distribution; ultraviolet; absorption; depends; solvent; liquid; decomposition; rate; 13; 12; radiation; reverse; true; shift; spectrum; phenomenon; readily; characterized; function; polarizability; exhibits; behavior; similar; vibrational; transitions; occurring; infrared; spectral distribution; liquid nitrogen; nm radiation; nm light; ultraviolet absorption; liquid argon; /204/
Citation Formats
Freund, Samuel M, Maier, II, William B., Holland, Redus F, and Beattie, Willard H. Photolytic separation of isotopes in cryogenic solution. United States: N. p., 1985.
Web.
Freund, Samuel M, Maier, II, William B., Holland, Redus F, & Beattie, Willard H. Photolytic separation of isotopes in cryogenic solution. United States.
Freund, Samuel M, Maier, II, William B., Holland, Redus F, and Beattie, Willard H. Tue .
"Photolytic separation of isotopes in cryogenic solution". United States. https://www.osti.gov/servlets/purl/865673.
@article{osti_865673,
title = {Photolytic separation of isotopes in cryogenic solution},
author = {Freund, Samuel M and Maier, II, William B. and Holland, Redus F and Beattie, Willard H},
abstractNote = {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 distribution 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}
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