Multichannel hard X-ray imaging detector with time gating function

Abstract

The invention discloses a hard X-ray imaging detector which settles the problems of low time resolution, low space resolution, small visual field and incapability of satisfying a detecting requirement in hard X-ray detection. The hard X-ray imaging detector comprises a sealed vacuum chamber, a multichannel hard X-ray detecting optical cathode, a microchannel board and a pulse high-voltage power supply, wherein the vacuum chamber is mainly composed of a detector frame, a ray filtering window and a fluorescent screen, and the multichannel hard X-ray detecting optical cathode and the multichannel board are arranged in the vacuum chamber. The pulse high-voltage power supply supplies working voltage to the multichannel hard X-ray detecting optical cathode and the multichannel board, and supplies loading voltage to a space between the multichannel hard X-ray detecting optical cathode and the microchannel board and a space between the microchannel board and the fluorescent screen. The hard X-ray imaging detector has advantages of simple structure, scientific and reasonable design, and high convenience in use. The hard X-ray imaging detector can effectively improve time resolution, space resolution and object space resolution in detecting the hard X-ray. Furthermore the hard X-ray imaging detector has a time gating function and furthermore has a large detecting visual field.

Description

Technical field [0001] The invention relates to the fields of plasma physics and nuclear detection, in particular to a multi-channel hard X-ray imaging detector with time gating. Background technique [0002] Hard X-rays interact with matter, mainly photoelectric effect and Compton effect, and each effect produces corresponding high-energy primary electrons. These primary electrons continue to interact with the substance, causing the atoms and molecules of the substance to ionize and excite. If the ionization and excitation signal generated in a certain substance can be extracted from the substance, collected and amplified to become an electric pulse signal for analysis and recording, this substance can be used as a hard X-ray detector The detection medium. [0003] Hard X-rays can produce photoelectric effect and Compton effect in any substance, but not any substance can be used as a detection medium for hard X-rays. The ionization and excitation of secondary electrons in the s...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a multi-channel hard X-ray imaging detector with time gating to solve the time resolution and spatial The resolution is low and the detection field of view is small so that the actual detection requirements cannot be met

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