On-board radiation source positioning device and positioning method

Abstract

The invention discloses an on-board radiation source positioning device, which belongs to the field of radioactivity detection. The device comprises gamma ray detection crystals arranged at the top part of a rotation shaft; each gamma ray detection crystal is composed of four plastic scintillators of the same size; the four plastic scintillators are correspondingly connected with four nuclear electronic signal processing units; the four nuclear electronic signal processing units are connected with a computer processing unit; and metal shading layers are arranged between the four plastic scintillators, between the plastic scintillators and the nuclear electronic signal processing units and between the plastic scintillators and the rotation shaft. Differences between deposited gamma rays of the four gamma ray detection crystals shaded by a lead plate are used, according to the dose rate ratio of the deposited gamma rays, a relation between the ratio and the distance between the radiation source and the device is obtained through calculation, and the radiation source can be quickly positioned. The invention also discloses a positioning method by using the above on-board radiation source positioning device.

Description

technical field [0001] The invention relates to a radioactive source locating device, in particular to a vehicle-mounted radioactive source locating device and a locating method, belonging to the field of radiation detection. technical background [0002] With the gradual expansion of the application scope of nuclear technology, the use of radioactive sources spread all over the country. The lag of safety protection measures has caused frequent incidents of radiation loss, which has brought huge safety hazards and potential health risks to the public. Radioactive sources are colorless and odorless, and their invisibility increases the probability of radioactive source loss accidents, and increases the difficulty of searching for lost radioactive sources and the risk of disposal. At present, my country has not carried out systematic research work on radioactive source search equipment. In response to the disappearance of radioactive sources caused by geological disasters su...

AI Technical Summary

Problems solved by technology

In response to the disappearance of radioactive sources caused by geological disasters such as earthquakes, and the discarding of artificial radioactive sources such as theft and mistaken picking, it is impossible to take active search and disposal at the technical level

Foreign countries have carried out some work on the research and development of radioactive source detection and search systems, but the quantity is limited and the price is expensive, which cannot meet the current emergency needs of radioactive source security

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