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US 4,065,671 AGranted
Device for detecting X-ray radiation
AssigneeThomson-CSF
InventorsChristian Mayeux, Francois Micheron, Jean Pierre Vasseur
Life of this patent
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Abstract
The invention relates to X rays detection devices, either for dose metering purposes or for display purposes. The device in accordance with the invention comprises a thin plate of ferroelectric material upon the faces of which electrical charges are deposited. X ray radiation produces an increase in the conductivity of the material and, consequently, modulation of the distribution of the charges, determination of which furnishes the desired detection.
Claims13
A device for detecting X ray radiation comprising:
- a plate of ferroelectric material positioned for receiving said X ray radiation on one of its major faces;
- said ferroelectric material being capable of absorbing the major part of said X ray radiation over a given depth;
- said ferroelectric material having a conductivity increasing under the effect of said X ray radiation;
- said device further comprising biasing means for providing electrical charges at least at one of the major faces of said plate and charge detection means for sensing the variation in the amount of said electrical charges resulting from the conductivity increase caused by the X ray radiation dose received by said plate;
- the thickness of said plate being selected to match said depth.
2 more elements
Dependencies are inferred from the claim text.