Radiant energy – Ion generation – With sample vaporizing means
Patent
1984-10-10
1986-04-15
Anderson, Bruce C.
Radiant energy
Ion generation
With sample vaporizing means
250423R, 3133621, 31511181, H01J 2700
Patent
active
045829977
ABSTRACT:
The invention relates to a device for regulating an ionic current, particularly a highly charged metal ion current, obtained by vaporizing and then ionizing a solid material in an ultra-high frequency cavity with the aid of a hot electron plasma confined in said cavity. This plasma is produced by ionizing a gas as a result of the combined action of a high frequency electromagnetic field and a magnetic field, whose amplitude is such that the electron cyclotron resonance is satisfied. The device inter alia comprises a pulse generator, whereof the useful cycle is regulated in order to pulse the electromagnetic field and control its mean power, a valve for modifying the gas flow entering the cavity and means for controlling said valve in such a way that the pressure prevailing in the cavity remains constant.
REFERENCES:
patent: 2826708 (1958-03-01), Foster et al.
patent: 3792251 (1974-02-01), Schmidt
patent: 3898496 (1975-08-01), Hudson
patent: 4206383 (1980-06-01), Amicich et al.
Revue de Physique Applique, vol. 15, No. 5, Mai 1980, Paris (FR.), R. Geller et al, pp. 995-1005, p. 1003, col. 1, lignes 14-22.
Nuclear Instruments and Methods in Physics Research, vol. 202, No. 3, Nov. 1982, Amsterdam (NL), R. Geller et al., pp. 399-401, p. 400, col. 2, lines 26-30; FIGS. 4-6.
Anderson Bruce C.
Commissariat a l''Energie Atomique
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