Portable measurement system for measuring internal radiation living body

A measurement system and portable technology, applied in radiation intensity measurement, X-ray energy spectrum distribution measurement, etc., can solve the problems of poor energy resolution, bulky measurement system, and huge cryogenic facilities, and achieve small size, good portability, and improved efficiency effect

Inactive Publication Date: 2013-06-05
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the event of a sudden nuclear accident, most of the existing measurement systems are very bulky and bulky, and cannot be carried to the accident site for measurement, so as to timely determine the internal pollution of the staff
In addition, although the NaI detector is easy

Method used

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  • Portable measurement system for measuring internal radiation living body
  • Portable measurement system for measuring internal radiation living body
  • Portable measurement system for measuring internal radiation living body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the internal irradiation living body measurement system is mainly composed of four parts: including the detector part (probe, preamplifier and linear amplifier), eight-channel signal mixer, multi-channel analyzer and computer data management system. The measurement system uses 8 planar CdZnTe detectors, and each CdZnTe detector is individually configured with a preamplifier and a linear amplifier, and then the 8-channel signals of the 8 linear outputs are introduced into the multi-channel signal mixer, and then transmitted to the multi-channel after being encoded by the mixer. Analyzer, the collected data is displayed on the computer data management system in the form of nuclide energy spectrum and processed.

[0023] Such as figure 2 As shown, 8 planar CdZnTe detector arrays are divided into 2 groups, and 4 detector arrays are arranged in a 2×2 grid in each group, and they are respectively installed in two cuboid boxes made of red copper. ...

Embodiment 2

[0039] The technical solution is the same as that in Embodiment 1, except that the eight CdZnTe detector arrays can also be multiple CdZnTe detector arrays, or multiple CdTe detector arrays.

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Abstract

The invention belongs to the field of radiation dosage monitoring, and in particular relates to a portable measurement system for measuring an internal radiation living body. The portable measurement system comprises a detector part, a multi-signal mixer, a plurality of analyzers and a computer data management system, wherein the detector part consists of a probe, pre-amplifiers and linear amplifiers; the measurement system adopts a plurality of compound semiconductor detector arrays; each detector is independently provided with each pre-amplifier and each linear amplifier; a plurality of linearly output signals are introduced into the multi-signal mixer; the signals are encoded by the multi-signal mixer and are transmitted to the analyzers; and acquired data are subjected to data processing of the computer data management system, so that a nuclide energy spectrum diagram can be displayed. By the portable measurement system, low-energy x and gamma rays of the internal radiation living body can be measured; and the detection efficiency and the sensitivity are high.

Description

technical field [0001] The invention belongs to the field of radiation dose monitoring, and in particular relates to a portable measuring system for internal irradiation living body measurement. Background technique [0002] With the application of nuclear energy in different fields, higher requirements are put forward for the safety of nuclear personnel. Nuclear personnel are likely to ingest radionuclides into the body through inhalation or ingestion. Since different radionuclides are deposited in different positions in the human body, the long-lived transuranic nuclides are more harmful to the human body. Transuranic nuclides usually take the lungs as the main deposition site, and the measurement of transuranic nuclides in the human body can only be determined by the X-rays accompanying their decay, and the measurement technology is the most difficult. On the one hand, the χ and γ-rays emitted by transuranic elements have low energy, and human tissues attenuate these low...

Claims

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Application Information

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IPC IPC(8): G01T1/36G01T1/24
Inventor 曲延涛王莹王凯徐勇军王仲文
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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