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Radioactive substance monitoring
Gamma rays or neutrons emitted from radioactive substances, after striking the detector, will react with the detection medium (such as plastic scintillator, NaI (Tl) or 3He gas), and the energy thus produced is converted into electrical pulse signal and output, and then is recorded by the data acquisition and processing system. For a simple alarm system, the system will, according to the change in the number of pulses recorded in unit time (i.e., the counting rate), determine whether the object to be inspected contains excessive radioactive substances or not.
For a nuclide identification system, the above-mentioned electrical pulse signal is recorded by multichannel analyzer and then forms Energy Dispersive Spectroscopy (EDS) with the pulse amplitude as the horizontal axis and pulse counting as the vertical axis. Since different types of radioactive nuclide emit different radiation energy, the advanced nuclide identification algorithm can be used to analyze the EDS to show the type of radioactive nuclide that causes the alarm, and then to provide more basis for the decision of users.
NUCTECH provides a series of products for monitoring radioactive substances and measuring nuclear radiation, which help customers monitor existing radiation sources, automatically monitor the level of radioactive environment and crack down on the transportation of illegal nuclear materials. At the same time, a comprehensive monitoring system of radioactive environment which is developed based on the above mentioned products and advanced system integration technology mastered by NUCTECH can provide customers with more comprehensive and integrated security check solutions.
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