X-Ray detector for detecting X-rays having passed through an obj

Details X-Ray detector for detecting X-rays having passed through an obj X-Ray detector for detecting X-rays having passed through an obj

1982-03-30

1984-07-24

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

G01T 118

Patent

active

044619537

ABSTRACT:
The present invention relates to a detector of X-rays having passed through an object or an organ. This detector comprises at least one tight ionization chamber containing a gas ionizable by the rays issuing from the object and, in this chamber, a plate for collecting the charges and a series of electrodes for collecting the charges resulting from the ionization of the gas. The ionization chamber further contains a gas capable of creating, within the mixture thus formed, a movement of gas opposite the movement of the ions.

REFERENCES:
patent: 2936388 (1960-05-01), Chubb et al.
patent: 3126479 (1964-03-01), Mattson
patent: 4047041 (1977-09-01), Houston
Hickam et al., "Electron Attachment in SF.sub.6 Using Monoenergetic Electrons", Jour. of Chem. Physics, vol. 25, No. 4, Oct. 1956, pp. 642-647.
Lakshminarasimha et al., "Time-of-Flight Electron-Swarm of Ionization and Attachment in Gases," Proc. of IEE, vol. 122, No. 10, pp. 1162-1165, Oct. 1975.

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