Ray converter

Details Ray converter Ray converter

1974-01-02

1976-01-13

Lawrence, James W.

Radiant energy

Source with charged plate-type detector

250315, H01J 3150

Patent

active

039327507

ABSTRACT:
In a radiographic system a converter is used for changing image forming intensity distribution in a bundle of penetrating rays into a flow of electrically charged particles by electrodes located in a gas space and partly latticed (grids) which lie at potentials stepped from cathode to anode. The invention is particularly characterized by the provision of at least two grids extending between and parallel to the cathode and the anode. The electrical field which lies between two electrodes lies at least between the grids located closest to the cathode being to the extent of between 1 and 10%, in the average preferably 3% below the electrical break down field in the gas in a homogenous electrical field.

REFERENCES:
patent: 3603790 (1971-09-01), Cleare
patent: 3653890 (1972-04-01), Seimiya et al.
patent: 3710125 (1973-01-01), Jacobs et al.
patent: 3772010 (1973-11-01), Weiss
patent: 3803411 (1974-04-01), Reiss

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