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The electrostatic-focusing Spindt-type field emitter array (FEA) pitch was optimized for an FEA-high-gain avalanche rushing amorphous photoconductor (HARP) image sensor. Simulation results showed that a narrow FEA pitch of less than 2.2 µm deteriorates the electrostatic focusing effect.
A photon-counting mode X-ray imaging device has a lot of interests, such as high-sensitivity and energy-discrimination. We have studied about photon-counting mode X-ray image sensor which was constructed with CdTe, and already developed for the line sensor. The imaging device that could detect X-rays by using Field Emitter Array (FEA) was proposed. The resolution of the image is decided by the spot...
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