Cold-cathode X-ray emitter and tube therefor

Details Cold-cathode X-ray emitter and tube therefor Cold-cathode X-ray emitter and tube therefor

1995-03-16

1995-11-21

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378136, H01J 3504

Patent

active

054694906

ABSTRACT:
A light weight battery powered x-ray source capable of producing high intensity x-ray emissions with low power consumption. A modular construction locates all high voltage components including the x-ray tube, spark gap trigger, spiral capacitor and the secondary of a step-up transformer in a sealed canister which can be decoupled both mechanically and electrically by unscrewing a simple threaded coupling. A center module contains the primary of the step-up transformer, circuit boards for electronic components and a pulse counter/selector. A battery pack with rechargeable Nicad batteries is removably connectable to the center module. High intensity pulses are achieved in part by connecting the spiral capacitor at midlength to the spark gap trigger. An improved x-ray tube with light weight but effective lead shielding and an overall length of less than two inches is also disclosed.

REFERENCES:
patent: 3283203 (1966-11-01), Dyke et al.
patent: 3309523 (1967-03-01), Dyke et al.
patent: 3883760 (1975-05-01), Cunningham, Jr.
patent: 3970884 (1976-07-01), Golden
patent: 4012656 (1977-03-01), Norman et al.
patent: 4379977 (1983-04-01), Carmel et al.

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