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Method and device 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 limited measurement energy, low sensitivity of neutron dose equivalent instrument, unsatisfactory energy response, etc., and achieve high sensitivity and wide range neutron dose equivalent measured effect

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

[0006] The main purpose of the present invention is to provide a neutron dose equivalent measurement method and measurement device to solve the problems of low sensitivity, limited measurement energy, and unsatisfactory energy response of neutron dose equivalent meters in the prior art.

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  • Method and device for measuring neutron dose equivalent
  • Method and device for measuring neutron dose equivalent

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Embodiment Construction

[0024] 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.

[0025] 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.

[0026] For simplicity, some technical features known to those skilled in the art are omitted from the following description.

[0027] figure 1 A flow chart of a neutron dose equivalent measurement method 100 accor...

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Abstract

The invention provides a method and device for measuring neutron dose equivalent. The method comprises steps of: establishing a liquid scintillator counting zone, a central counting zone, and a peripheral counting zone, wherein the liquid scintillator counting zone comprises a liquid scintillator, the central counting zone comprises a first neutron counter, the peripheral counting zone comprises multiple second neutron counters; acquiring first neutron dose equivalent by means of the interaction of the neutron and the liquid scintillator; acquiring second neutron dose equivalent by means of the interaction of the neutron and the first neutron counter; acquiring third neutron dose equivalent by means of the interaction of the neutron and the second neutron counters; and computing the first neutron dose equivalent, the second neutron dose equivalent, and the third neutron dose equivalent in order to obtain the dose equivalent of a neutron radiation field. The method and the device in the technical scheme of the invention may measure low-energy, intermediate-energy, and high-energy neutrons relatively independently 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 method and measuring device. Background technique [0002] The neutron dose equivalent meter is a detector system used to measure the dose equivalent around neutrons in the radiation field. It generally consists of two parts: detection components, signal acquisition and data processing systems. A commonly used physical response for probing components is the BF 3 Proportional counter tube 10 B(n,α), 3 He proportional counter 3 He(n, Ρ), LiI scintillation counter 6 Li(n,α), etc., occasionally also use activation and solid state detectors. It is externally wrapped with moderator materials such as polyethylene or paraffin, and absorbers such as lead or iron are embedded in the moderator according to a certain distribution. For example, the probe used in a typical neutron dose equivalent meter without internal absorber adopts BF ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/06
Inventor 韩善彪袁之伦张艳霞李宏宇
Owner NUCLEAR & RADIATION SAFETY CENT
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