High-sensitivity wide-range X-gamma ambient dose equivalent rate monitor probe

Abstract

The invention discloses a high-sensitivity wide-range X-gamma ambient dose equivalent rate monitor probe, which consists of a front cover of the probe, a shielding shell, thallium-doped sodium iodide scintillator, a first optical conductor, a plastic scintillator, a silver-doped zinc sulfide scintillator, a second optical conductor, a photomultiplier and a preamplifier circuit which are connectedin turn. By the high sensitivity of the plastic scintillator and the energy compensation of the thallium-doped sodium iodide scintillator and the silver-doped zinc sulfide scintillator, the high-sensitivity wide-range X-gamma ambient dose equivalent rate monitor probe has the advantages of capacity of detecting the ambient dose equivalent rate of X-gamma rays under a wide-range high-dose mixed gamma radiation field, good energy response, high sensitivity and good angular response.

Description

technical field

[0001] The invention relates to an X-γ radiation measuring device, in particular to a probe of an X-γ peripheral dose equivalent rate meter. Background technique

[0002] Radiation environment and radiation protection are required in environmental monitoring, sanitation and epidemic prevention, non-destructive testing, industrial flaw detection, import and export commodity inspection, radiation medicine, building materials, petrochemical, geological survey, airports, stations, docks, ports, scrap steel, nuclear laboratories, etc. In the case of detection, an environmental-grade dose rate meter is required to measure the dose equivalent rate and absorbed dose rate. The measuring instrument is required to have a good energy response at 30KeV-7MeV (in addition to accurately measuring high-energy γ-rays, it must also be able to accurately measure low-energy X and γ-rays), good dose linearity, good angular response, and high sensitivity.

[0003] Existing dose ra...

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