Alpha-beta measuring instrument

Abstract

The invention discloses an alpha-beta measuring instrument which comprises a protecting part which comprises a first grating and a first positioning component; a light shielding part which is arrangedadjacent to the protecting part and comprises a fixing part and at least one thin film layer installed on the fixing part, wherein the fixing part comprises a second grating and a second positioningpart, and the orthographic projections of a first grating and the second grating in the ray incident direction are overlapped; and a sealing positioning part including a fixing part engaged with the first positioning part and the second positioning part, with the fixing member part arranged to fix the light shielding part and the protecting part in the alpha beta measuring instrument.

Description

technical field [0001] The present disclosure relates to the technical field of nuclear radiation detection, and more specifically, relates to an αβ measuring instrument. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. To the extent described in this Background section, the work of the presently named inventors, and aspects of the description that may not constitute prior art at the time of filing, are neither expressly nor impliedly admitted to be prior art with respect to the present disclosure. technology. [0003] The αβ measuring instrument is a common nuclear radiation detection instrument, which can measure the α and β surface activities of personnel equipment and various object surfaces. The detection instrument generally adopts double-scintillation technology, which mainly includes a casing, a protective layer, a silicone sealing sleeve, a light-shielding layer, a pl...

AI Technical Summary

Problems solved by technology

In order to avoid blocking α and β rays, the middle detection area of ​​the fixed piece is generally designed to be hollowed out, so that the aluminized polyester film of the light-shielding layer and the film fixed piece can only be bonded through the periphery, but this will lead to: The bonding area is not enough, the flatness of the film in the detection area of ​​the light-shielding layer is poor, and the middle part is prone to wrinkles, which seriously affects the appearance of the detection instrument; in addition, the strength of the light-shielding layer is poor and it is easy to deform; when the light-shielding layer When the area is large, because the material is too soft, the installation process is poor. Once wrinkles or scratches occur during the installation process, the light-shielding layer may be scrapped as a whole

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