Laser isotope separation using selective inhibition and encourag

Details Laser isotope separation using selective inhibition and encourag Laser isotope separation using selective inhibition and encourag

1977-08-01

1979-12-18

Williams, Howard S.

Gas separation

Means within gas stream for conducting concentrate to collector

204DIG11, 2041571R, B01J 110, B01D 100

Patent

active

041792726

ABSTRACT:
Method and apparatus for inhibiting dimer formation of molecules of a selected isotope type in a cooled flow of gas to enhance the effectiveness of mass difference isotope separation techniques. Molecules in the flow containing atoms of the selected isotope type are selectively excited by infrared radiation in order to inhibit the formation of dimers and larger clusters of such molecules, while the molecules not containing atoms of the selected, excited type are encouraged to form dimers and higher order aggregates by the cooling of the gaseous flow. The molecules with the excited isotope will predominate in monomers and will constitute the enriched product stream, while the aggregated group comprising molecules having the unexcited isotope will predominate in dimers and larger clusters of molecules, forming the tails stream. The difference in diffusion coefficients between particles of the excited and unexcited isotopes is enhanced by the greater mass differences resulting from aggregation of unexcited particles into dimers and larger clusters. Prior art separation techniques which exploit differences in isotopic diffusion rates will consequently exhibit enhanced enrichment per stage by the utilization of the present invention.

REFERENCES:
patent: 4024217 (1977-05-01), Wexler et al.
patent: 4025790 (1977-05-01), Jeffer et al.
patent: 4032306 (1977-06-01), Lee
patent: 4039411 (1977-08-01), Woodroffe et al.

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