Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1978-01-11
1984-03-20
Williams, Howard S.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
422186, B01J 1912
Patent
active
044379587
ABSTRACT:
A device and method for separating oxygen isotopes with an ArF laser which produces coherent radiation at approximately 193 nm. The output of the ArF laser is filtered in natural air and applied to an irradiation cell where it preferentially photodissociates molecules of oxygen gas containing .sup.17 O or .sup.18 O oxygen nuclides. A scavenger such as O.sub.2, CO or ethylene is used to collect the preferentially dissociated oxygen atoms and recycled to produce isotopically enriched molecular oxygen gas. Other embodiments utilize an ArF laser which is narrowly tuned with a prism or diffraction grating to preferentially photodissociate desired isotopes. Similarly, desired mixtures of isotopic gas can be used as a filter to photodissociate enriched preselected isotopes of oxygen.
REFERENCES:
patent: 4029558 (1977-06-01), Morling
patent: 4082633 (1978-04-01), Eerkens
"The Tac II krF Laser: A Preliminary Report", Barker et al., a Los Alamos unclassified report LA-UR-76-1758.
Applied Physics Letters, vol. 29, No. 11, Dec. 1, 1976, Burnham et al., pp. 707-709.
Chemical Abstract, vol. 71(1969), 86862h.
JETP Letters (USA), vol. 17, No. 2(Jan. 20, 1973), pp. 63-65.
Rockwood Stephen D.
Sander Robert K.
Besha Richard G.
Freund Samuel M.
Gaetjens Paul D.
The United States of America as represented by the United States
Williams Howard S.
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