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Nov 15, 2023Open Access
In order to facilitate the calibration and scale of pyroelectric detectors for environmental dose monitoring, a new simple standard irradiation device was designed. Through Monte Carlo software, the uniformity of radiation field, absorbed dose of pyroelectric detector and scattering contribution rate of this device are simulated. The simulation results show that the new simple standard irradiator satisfies the national standards and can fulfill the calibration and scaling requirements of pyroele...
Oct 25, 2023Open Access
With the increasing applications of radioactivity measurements in the nuclear industry, this paper focuses on the rapid identification, ease of operation, and low power consumption of portable nuclear isotope identifiers. Leveraging the excellent performance, ease of software portability, and open-source nature of embedded Linux systems, this research addresses key aspects such as spectrum data filtering, peak finding, false peak detection, and multi-isotope recognition. This system ensures port...
May 25, 2023Open Access
A Yukawa-type potential was used to predict B for the current nuclides using a set of 23 nuclides as the source of the experimental values. The deviation between measurement and prediction was remarkably reduced by a special search on the average distance between nucleons. The best results were obtained for a 2-exponential model. The predictions of B inside and outside the range of A and Z used to do the fitting were carried out by fitting the obtained values of the average distance between nucl...
Feb 24, 2023Open Access
This article discusses the implications of the Ukrainian military conflict on the safety and security of Zaporizhzhia Nuclear Power Plant (ZNPP). We have used some simplified models to calculate the boiling and boiling-off times of water in the spent fuel pools to estimate the impacts of complete shutdown of cooling systems and the probability of dangerous accidents in storage facilities. Our data confirm that this probability is not negligible, so, this factor of risk should be taken into consi...
Nov 09, 2022Open Access
The vehicle-mounted gamma patrol spectrometer system is a set of system equipment that places a gamma-ray spectrometer on a vehicle-mounted mobile platform to detect the energy and intensity of gamma rays in the target area, and identify the type and content of radionuclides. The vehicle-mounted gamma patrol spectrometer system is a fast and high-sensitivity measurement method for detecting environmental radioactivity. It is usually used in the field of environmental radiation monitoring and und...
Oct 13, 2022Open Access
As more and more people are aware of the harm of radon, the demand for radon measuring instruments will increase, and radon measuring instruments have a broad potential market. According to the theory that the α-ray from the decay of radon and its daughters can ionize air molecules, a pulse ionization chamber radon measuring instrument is designed, which has the characteristics of high measurement sensitivity, good measurement accuracy and stability. The system hardware consists of detection par...
Sep 30, 2022Open Access
With the development of science and technology, neutron detection plays an increasingly important role in many fields, such as national defense security, medical imaging and aerospace. Gas detector is a commonly used neutron detector. It takes gas as the working medium and produces electrical signal by ionization effect of incident particles. In recent years, as the expensive price of 3He gas detector, and environmental hazard of BF3 gas detector, the boron-lined ionization chamber, which is dev...
Sep 29, 2022Open Access
With the rapid development of China’s economy and society, the contradiction between energy shortage and environmental deterioration has become increasingly prominent. As a clean energy, the nuclear power industry has ushered in an unprecedented development opportunity. More and more attention has been paid to the issue of nuclear radiation safety protection. The acquisition and processing of nuclear signals becomes more and more important. As a common research means, the acquisition and process...
Sep 27, 2022Open Access
Prompt gamma activation analysis (PGAA) has the characteristics of high sensitivity and non-destructive analysis. At the same time, compared with neutron activation analysis, prompt gamma activation analysis requires less neutron flux and causes lower induced radioactivity to the sample. After a period of time, the radioactivity of the sample will be reduced to a natural level and can be used for other studies. Therefore, PGAA is also a suitable choice for some precious samples. PGAA has been ap...
Sep 14, 2022Open Access
Backpack type radioactive source seeking system refers to the method of placing a small gamma spectrometer in the backpack to detect the energy and intensity of gamma rays in the area and identify the type and content of radionuclides. It is usually used in the field of environmental radiation monitoring and radioactive source loss, as well as undertaking radioactive exploration tasks. In the radiation environment monitoring, the portable backpack type source finding system is mainly used to sea...
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