Portable measurement system for measuring internal radiation living body

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...

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 to use and cheap, its energy resolution is poor; the HPGe detector has high energy resolution, but it needs to be used in a low temperature environment of 90-100K (cooled by liquid nitrogen) during measurement and storage. Cryogenic facilities are huge and expensive to purchase

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