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Personal neutron dosimeter with energy compensation

A technology of energy compensation and dosimeter, which is applied in the measurement of neutron radiation, measurement devices, radiation measurement, etc., can solve the problems of no response, low neutron response, poor energy response, etc., and achieve the effect of improving energy compensation Effect

Active Publication Date: 2011-09-07
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

[0004] Such a structure can realize the measurement of neutron dose, but there are also big problems, mainly manifested as poor energy response, that is, there is basically no response to neutrons with energy below 100keV, and neutrons with energy below 300keV The response is also very low, the specific neutron energy response as figure 2 As shown, this is bound to have a great impact on the accuracy of dose monitoring

Method used

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Dosimeter measurements of recoil protons actually exploit the following nuclear reactions:

[0018] n+H→n+p

[0019] The H in it is provided by plastics such as polyethylene, so if other nuclear reactions can be used to generate additional charged particles through the change of the dosimeter material, the response of the dosimeter to low-energy neutrons can be improved.

[0020] This kind of material should have a larger cross-section for the neutron reaction at the low-energy end. Generally speaking, such materials mainly include 3 He, 6 Li, 10 B, Au, etc. 3 He is an inert gas and difficult to work with. Au is also expensive and has poor tissue equivalence, making it unsuitable as a dosimeter material. therefore, 6 Li and 10 B can be used as the main object of consideration, but considering the machinability of the dosimeter and other...

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Abstract

The invention belongs to a radiation dose measurement technique, and particularly relates to a personal neutron dosimeter with energy compensation. The personal neutron dosimeter comprises a casing, a gamma detection element and a solid track detector, wherein the casing is made of a boron-containing polyethylene material; an air cavity is formed in the casing made of the boron-containing polyethylene material; and the solid track detector is arranged in the air cavity. The personal neutron dosimeter ensures that the energy compensation effect is realized by using two conversion bodies which are the air layer and the boron-containing material.

Description

technical field [0001] The invention belongs to radiation dose measurement technology, in particular to a neutron personal dosimeter with energy compensation. Background technique [0002] Neutron individual dose research is a very important scientific research field with high research and application value. The application occasions of neutron personal dose monitoring include nuclear power reactors, experimental reactors, nuclear fuel cycle, nuclear military, nuclear technology applications, etc., and with the development of my country's economy and science and technology, the continuous establishment of neutron application radiation fields, neutron Personal dosimeters are bound to be more widely used. [0003] The use of solid track detectors for neutron personal dosimetry is a commonly used technique. Solid state track detectors can measure a variety of particles, and recoil protons are one of them. At present, this technology is mostly adopted in the world and at home, ...

Claims

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Application Information

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IPC IPC(8): G01T3/00G01T7/00
Inventor 魏可新宋明哲武昌平陈军王志强侯金兵骆海龙
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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