Technical method and device for inverting positions and boundaries of virtual points in pollution area

A technology of virtual points and contaminated areas, which is applied in radiation measurement, X-ray energy spectrum distribution measurement, instruments, etc., can solve problems such as large data errors, inaccurate detection efficiency scales, and complex source terms, and achieve high density, Strong practicality and small size
CN113703034APending Publication Date: 2021-11-2663653 FORCES PLA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
63653 FORCES PLA
Publication Date
2021-11-26

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Abstract

The invention discloses a technical method and device for inversing the positions and boundaries of virtual points in a pollution area. The technical device comprises a hot area virtual point source, sandy soil, a sandy soil attenuation layer, a detector, a virtual point detector, a surface source, a virtual point source of the surface source, the ground, and air, and the virtual point source is a virtual point source of a body source, a surface source, or a mixed source. The emitted rays can reach the detector only after passing through the sandy soil, the ground and the air, the sandy soil is buried deep sandy soil of a virtual point source, the position of the sandy soil is between the virtual point source and the detector, an equation set is established by utilizing the principle of the effective pre-area of the in-situ HPGe gamma spectrometer, the position of the virtual point is obtained by solving the equation, and therefore the boundary parameters of the polluted area are further inverted. The method is high in practicability, the CZT detector is used, the CZT detector is high in density and small in size, the CZT detector can be regarded as a point detector at the distance of 1.0 m, an equation set is established by means of two sandy soil attenuation layers consistent with a target object, and the purpose of measuring target parameters is achieved.
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Description

technical field

[0001] The present invention relates to the position and boundary scale technology of volume source or area source or mixed source and source items in the contaminated area in the application field of nuclear technology, specifically the technical method and equipment for retrieving the virtual point position and boundary of the contaminated area. Background technique

[0002] In the in-situ gamma spectrometer measurement, the measurement object is generally located on the sandy soil surface or under the sandy soil. The measurement object may be a surface source or a point source, or several volume sources, surface sources or point sources at different depths, or their mixed sources; at the same time, the shape of the volume source or surface source is uncertain, and the distribution is extremely complex. For these situations at home and abroad, there is no good solution to the measurement of its location boundary and activity concentration. With the introdu...

Claims

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