Composite photoelectric cathode X-ray detection device

Abstract

The invention relates to a composite photoelectric cathode X-ray detection device, which comprises a support framework, a reflecting layer photoelectric cathode, an MCP (Micro Channel Plate) input electrode, an insulation pad, at least one electron multiplying unit, a polymer film, a metal film, a transmission layer photoelectric cathode and a cathode electrode, wherein the polymer film, the metal film, the transmission layer photoelectric cathode and the cathode electrode are arranged in a support framework in sequence; the cathode electrode is positioned between the transmission layer photoelectric cathode and the inner wall of the support framework; the electron multiplying unit comprises an MCP and an output electrode; the output electrode is fixed on a base of the support framework; the MCP is arranged on the output electrode; the reflecting layer photoelectric cathode is positioned on a layered MCP input surface; the MCP input electrode is positioned between the reflecting layer photoelectric cathode and the inner wall of the support framework, and is fixed on an uppermost layer MCP; and voltage U between the cathode electrode and the MCP input electrode is supplied by an external power supply. According to the composite photoelectric cathode X-ray detection device, the technical problems of extremely long observing time required by the detection of X-ray pulses and low detecting efficiency of an entire system are solved, and the detection efficiency of extremely weak X-ray pulses is increased.

Description

Technical field [0001] The invention relates to a device for improving the detection efficiency of an X-ray detector by using a composite photocathode based on the combination of a reflective photocathode and a transmissive photocathode, which can be used for X-ray pulsar pulse detection and adopts a reflective photocathode The composite photocathode combined with the transmissive photocathode to improve the detection efficiency of X-ray detectors is an important method to solve the sustainable development and engineering research of deep-space extremely weak X-ray pulse detection and future pulsar navigation. Background technique [0002] X-ray pulsar autonomous navigation is a new type of autonomous navigation technology that uses pulsars as navigation beacons to determine the position, velocity and attitude of spacecraft by detecting periodic X-ray pulses from deep-space pulsars. It has broad engineering applications The prospects are new technologies and methods that the Unit...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problems of extremely long observation time and low detection efficiency of the whole system when using MCP detectors to detect X-ray pulses, the purpose of the present invention is to provide a device for detecting X-ray pulses using a composite photocathode, which overcomes the existing Shortcomings in technology to improve detection efficiency of extremely weak X-ray pulses

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