Processing method for large-area annular plastic scintillator

Abstract

The invention relates to the technical field of nuclear detection, and particularly discloses a processing method for a large-area annular plastic scintillator. The method comprises the following steps: S1: manufacturing the large-area plastic scintillator; S2: cutting the large-area plastic scintillator; and S3: polishing and aluminizing the large-area plastic scintillator. Performing irradiationmeasurement on a spot-shaped [beta]-plane radioactive source with a diameter of 2mm by the arge-area plastic scintillator manufactured by the method of which the response uniformity is three times better than the plastic scintillator obtained by using a general manufacturing method.

Description

technical field [0001] The invention belongs to the technical field of nuclear detection, and in particular relates to a large-area ring-shaped plastic scintillator processing method. Background technique [0002] In nuclear detection technology, plastic scintillator-coated ZnS crystals have high detection efficiency for α, β and γ rays, and have excellent plasticity, and are often designed into various special geometric shapes for making α, β Radiation detector with gamma rays. For a large-area special geometric shape of the measured object, it is necessary to process a large-area plastic scintillator corresponding to it. Spraying ZnS (Ag) on ​​the surface of the plastic scintillator is the ZnS crystal plating of the plastic scintillator to meet the requirements of α and β. Radiation detection with gamma rays is required. For example, relative to the measurement of the α, β and γ rays at the annular interface of the container, that is, the gap between the circular contain...

AI Technical Summary

Problems solved by technology

For large-area plastic scintillators, p-triphenyl is more affected by factors such as density and gravity. Using general production methods will often lead to serious uneven distribution of p-triphenyl, so that the processed large-area plastic scintillators are different. The detection efficiency of the position varies greatly, and the difference can reach more than 10 times

In addition, the yield of large-area plastic scintillators directly cut and processed by general production methods is less than 10%.