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Device and method for measuring neutron dose equivalent

A neutron dose and measurement device technology, applied in the field of nuclear and radiation detection, can solve the problems of neutron dose equivalent instrument simplification, low sensitivity, and limited measurement energy, and achieve wide-range neutron dose equivalent measurement and high sensitivity. Effect

Inactive Publication Date: 2015-09-09
NUCLEAR & RADIATION SAFETY CENT
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Problems solved by technology

[0007] The main purpose of the present invention is to provide a neutron dose equivalent measurement device to solve the problems of relative simplification, low sensitivity, limited measurement energy, and unsatisfactory energy response of neutron dose equivalent instruments in the prior art.

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  • Device and method for measuring neutron dose equivalent

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Embodiment Construction

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] In the following description, references to "one embodiment," "an embodiment," "an example," "example," etc. indicate that such described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitations, but not every embodiment or example necessarily includes the specific feature, structure, characteristic, property, element or limitation. Additionally, repeated use of the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may.

[0023] For simplicity, some technical features known to those skilled in the art are omitted from the following description.

[0024] figure 1 A structural block diagram of a neutron dose equivalent measuring devi...

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Abstract

The invention provides a device and method for measuring neutron dose equivalent. The device comprises multiple mutually-isolated liquid scintillator counting zones, a light-transparent glass surface, a light guide, a photomultiplier, and a data processor. The detecting material of each liquid scintillator counting zone is a liquid scintillator used for interacting with neutron to generate photons. One end of each liquid scintillator counting zone is sealed by the light-transparent glass surface. The photons generated by the interaction of the neutrons and the liquid scintillators pass through the light-transparent glass surface to be output to the light guide and then are collected by the light guide to be output to the photomultiplier to be counted in order that the sum of the photons generated by all the liquid scintillator counting zones is acquired. The data processor is used for computing the sum of the generated photons in order to obtain the dose equivalent of a neutron radiation field. The device and method in the technical scheme of the invention may measure neutrons with different energies in segments and accurately acquire the neutron dose equivalent so as to achieve neutron dose equivalent measurement with high sensitivity and a wide range.

Description

technical field [0001] The invention relates to the field of nuclear and radiation detection, in particular to a neutron dose equivalent measuring device and a measuring method. Background technique [0002] There are many difficulties in the dose equivalent monitoring of neutron radiation protection, mainly as follows: 1) The neutron energy range of the neutron radiation field is often relatively wide, accompanied by photon generation; 2) The conversion coefficient between neutron fluence and dose equivalent The change with energy is relatively large, and there is a difference of nearly two orders of magnitude; 3) Most of the detectors used to detect neutrons are sensitive to thermal neutrons, and the sensitivity to fast neutrons is relatively low; 4) The material of the probe during detection is also It will cause some interference to the detector, etc. [0003] Most of the current neutron dose equivalent meters are developed with the design idea of ​​single counter and i...

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Application Information

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IPC IPC(8): G01T3/06
Inventor 韩善彪李锦柳加成李宏宇
Owner NUCLEAR & RADIATION SAFETY CENT
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