A5067736735- Radioactivity and Radon Measurements
- Radiation Detection and Scintillator Technologies
- Radioactive contamination and transfer
- Nuclear Physics and Applications
- Nuclear and radioactivity studies
- Geophysical Methods and Applications
- Dark Matter and Cosmic Phenomena
- Microwave Imaging and Scattering Analysis
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Atmospheric and Environmental Gas Dynamics
- Soil and Unsaturated Flow
- Radioactive Decay and Measurement Techniques
- Air Quality Monitoring and Forecasting
- Nuclear reactor physics and engineering
- Landslides and related hazards
- Soil Carbon and Nitrogen Dynamics
- Radiation Dose and Imaging
- Neutrino Physics Research
- Graphite, nuclear technology, radiation studies
- Methane Hydrates and Related Phenomena
Hengyang Normal University
2021-2025
Abstract Radon-222 (Rn-222) exhalation rate is vital for estimating radiation risk from many kinds of materials. AlphaGUARD measures the radon concentration based on ionization chamber principle, which currently recognized as a reference instrument to measure radon. In China, measurements are performed by operated in flow-through mode device verify measurement accuracy. These both open and closed loop. can fast rapidly variation chamber, tightly pressed against surface medium accumulate...
Abstract Radon exhaled from rocks, building materials, and soil can be harmful to human health, so it is necessary measure radon its exhalation rate. In this paper, a novel method proposed simulate different medium surface by using solid Rn-222 source, the rate adjusted replacing accumulation chambers with bottom areas. Firstly, an experiment was done determine activity of then theoretical quickly calculated relationship between source area chamber. Three sets comparative experiments were...
Abstract The radioactive decay of radon (Rn-222) and its progenies are significant background sources in an extremely low environment, interfering with investigation like detecting dark matter observing neutrinos. In this paper, a 1000 L ultra-high sensitivity monitor for China Jinping Underground Laboratory (CJPL) based on electrostatic collection Au-Si surface barrier detector was developed. is capable distinguishing Rn-220 from the energy spectrum effectively eliminating any interference...
The importance of determining the radon exhalation rate from water surface is emphasized by increased use and its daughter products as tracers in large-scale circulation studies atmosphere. There were many methods to measure surface. With development measurement instruments on soil, rock building materials, so can be more accurately measured applying these improved instruments. In this paper, a cuboid accumulation chamber surrounded foam boards RAD7 used at three different positions Yixin...
Abstract Two models can be used to measure the radon exhalation rate with a ventilation chamber. The first is custom model flow meter, and second improved without meter. As established standard facilities can't simulate any medium measured by adjusting effective decay constants as required, numerical simulation useful compare two for measuring under different constants. Three rates were simulated rates, results confirmed that quick accurate even when very low. While only calculate far larger...
Abstract Radon and its decay products emit internal radiation in the respiratory system upon inhalation, which is a significant contributor to development of lung cancer humans. Accurate measurement radon concentration undoubtedly very important. Among commonly used methods, electrostatic collection method stands out. This involves counting energy spectrum peaks alpha particles, generated by daughters Po-218 Po-214, are collected on surface semiconductor detector determine concentration....
Abstract Radon (Rn-222) is the main source of radiation exposure to human beings from natural radiation; it great significance study measuring methods and instruments radon for protection. In recent years, application pixel detectors in detection has attracted attention. this paper, a Commercial Off-the-Shelf Complementary Metal Oxide Semiconductor (COTS CMOS) image sensor which replaces glass protection covering front sensors was used perform series measurements identify alpha particles....