Device and method for measuring high-energy electrons and electromagnetic radiation under long gap discharge

Abstract

The invention discloses a device and a method for measuring high-energy electrons and electromagnetic radiation under long gap discharge, which belong to the technical field of long gap discharge. Thedevice of the invention includes a discharge experiment part and a detection part. The discharge experiment part includes an impulse voltage generator, a voltage divider and a needle-plate dischargestructure. The detection part includes a scintillator probe group, a DC power supply, a linear amplifier, a multi-channel analyzer, a processor, a run-away electron beam collector and an oscilloscope.The device and the method have the characteristics of simple structure and low cost, can ensure smooth conduction of experiment, can be used to guide insulation protection under lightning overvoltageand impulse overvoltage, and can bring great economic benefits. The device and the method can improve the accuracy of space-time characterization of long gap discharge, and are helpful to promote thebasic theoretical research about long gap discharge.

Description

technical field [0001] The invention belongs to the technical field of long-gap discharge, and in particular relates to a measuring device and method for high-energy electrons and electromagnetic radiation under long-gap discharge. Background technique [0002] Long gap discharge is the basis of external insulation design and lightning shielding design, and it is used for the research of discharge characteristics and lightning shielding characteristics under lightning impulse overvoltage and power frequency overvoltage. As an important form of discharge, the mechanism of long-gap discharge is obviously different from that of short-gap discharge, which cannot be explained by the widely used Townsend theory and streamer theory. Long-gap discharge has short transient process, high discharge voltage, accompanied by various physical phenomena such as electricity, light, sound, heat, etc. The discharge is affected by many factors, and the discharge mechanism is complex. Due to th...

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Problems solved by technology

For example, the X-ray detector array of the scintillator group in the patent No. CN 103959098A can better reflect the space-time distribution of X-rays, but it adds an X-ray absorption function in the packaging structure to shield the X-rays from affecting the electronic circuit. Influence, and this will affect the experimental results in the discharge experiment, and the cost of the array structure is high, and the X-ray detection array manufactured in a small area cannot satisfy the X-ray generation conditions at different positions under the long gap

At present, there are few studies on long-gap discharge, and the devices and methods used are relatively immature

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