Multiple particle type interaction isotopically selective ioniza

Details Multiple particle type interaction isotopically selective ioniza Multiple particle type interaction isotopically selective ioniza

1976-10-12

1978-08-15

Anderson, Bruce C.

Radiant energy

Ion generation

Field ionization type

250281, H01J 3934

Patent

active

041075374

ABSTRACT:
Method and apparatus for impact ionization of particles excited with isotopic selectivity, particularly for use in a system of uranium isotope separation and enrichment. Efficient impact ionization is achieved by first selectively exciting vaporized particles of the desired isotope in a beam of finely tuned laser radiant energy. The energies of the interacting photons are selected to produce a total energy shift during excitation which is slightly less than the ionization energy for the selected isotope. The excited isotope will thus be raised to an excitation level only slightly below the ionization level. This level is selected to permit efficient ionization, particle collisional ionization, between energetic particles in the uranium vapor environment and the highly excited particles of the desired isotope type.

REFERENCES:
patent: 3294970 (1966-12-01), Jenckel
patent: 3772519 (1973-11-01), Levy et al.
patent: 3944825 (1976-03-01), Levy et al.
patent: 4000420 (1976-12-01), Harris
"Plasma Ionization Enhancement by Laser Line Radiation" Oettinger et al., AIAA Jour., vol. 8, No. 5, pp. 880-885, May 1970.
"Proposed New Method for Separating Isotopes", Stangeby et al., Nature vol. 233, Oct. 1971, pp. 472-473.

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