Photolytic separation of isotopes in cryogenic solution

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865673

Freund, Samuel M ^[1]; Holland, Redus F ^[2]; Beattie, Willard H ^[2]

---

1. Santa Fe, NM
2. Los Alamos, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4554060
• OSTI ID: 865673
• Country of Publication: United States
• Language: English

Related Subjects

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/