Radiant energy – Ion generation – Field ionization type
Patent
1977-04-14
1980-04-22
Anderson, Bruce C.
Radiant energy
Ion generation
Field ionization type
250423R, H01J 2700
Patent
active
041996852
ABSTRACT:
This invention relates to an apparatus in which laser pulses of up to about one nanosecond duration (.about.10.sup.-9 secs) and high intensity, more than 10.sup.11 watts cm.sup.-2, generate energetic (>>10 keV) ions, which can have very high charge states of more than twenty times the charge state of a single electron, from solid or liquid targets using non-liner, electrodynamic forces operating within the target material. In the present invention the energetic, highly charged ions are produced in such a manner that isotopes of a particular element forming the target can be separated into their respective groups travelling at particular velocities and directions, at distances of more than one meter from the irradiated target. In the present invention, the energetic, highly charged ions are generated and accelerated with high efficiency (>25%) within a relatively cold plasma (<1000 eV) generated from the target material. The energetic, highly charged ions are ejected from the plasma with velocities of more than 10.sup.7 cms sec.sup.-1 thus allowing the separation of mixed isotopes by electric and magnetic fields using techniques well known in the art.
REFERENCES:
patent: 3294970 (1966-12-01), Jenckel
patent: 3406349 (1968-10-01), Swain et al.
patent: 3478204 (1969-11-01), Brubaker et al.
Hora Heinrich
Hughes John L.
Kelly John C.
Luther-Davies Barry
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