A5043428214- Radioactivity and Radon Measurements
- Radiation Detection and Scintillator Technologies
- Radioactive contamination and transfer
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Radiation Dose and Imaging
- Geophysical Methods and Applications
- Nuclear Materials and Properties
- Traditional Chinese Medicine Analysis
- Radiation Effects and Dosimetry
- Graphite, nuclear technology, radiation studies
- Nuclear and radioactivity studies
- Ionic liquids properties and applications
- Fusion materials and technologies
- Particle Detector Development and Performance
- Extraction and Separation Processes
- Robotics and Sensor-Based Localization
- Medical Imaging and Pathology Studies
- Inertial Sensor and Navigation
- Radioactive element chemistry and processing
- Occupational and environmental lung diseases
- Technology and Data Analysis
- Head and Neck Surgical Oncology
- Sensor Technology and Measurement Systems
- Optical Systems and Laser Technology
Shanghai Institute of Measurement and Testing Technology
2015-2025
Sichuan University
2021
National University of Defense Technology
2017-2019
Fudan University
2010-2018
Institute of High Energy Physics
2010
Chinese Academy of Sciences
2010
University of Science and Technology of China
2010
Up to now, several different timetables have been proposed for thoron (220Rn) measurements by using the Lucas scintillation cell. In this study, based on measuring principle, uncertainty of was theoretically studied a self-developed simulation program. The results showed that timetable 1-min consecutive counting lasted 10 times an optimal routine 220Rn measurements. Compared with previously timetables, new could reduce >19 %.
The removal of radioactive gaseous iodine is crucial for sustainable nuclear energy development, safe spent fuel management, and secure disposal waste medical waste. However, the efficient capture iodine, particularly methyl iodide, under conditions low concentration high-flow rate that are representative real-world scenarios remains underexplored. Herein, we adopted a "theory-first" strategy to design adsorbents with superior affinity iodide. rigorous theoretical calculations both...
Multifunctional materials that meet diverse application needs hold profound significance in resource optimization, efficiency enhancement, and environmental sustainability. However, the development of these faces numerous challenges, including raw material acquisition, design feasibility, long‐term stability. This study demonstrates innovative surface chemistry aluminum oxo Archimedean cages efficient serial adsorption. The "Four‐in‐One" enables various single‐crystal‐to‐single‐crystal...
Journal Article Characteristic and performance of a simple thoron chamber Get access C. Zhao, Zhao Institute Radiation Medicine, Fudan University, 2094 Xietu Road, Shanghai 200032, P.R. China Search for other works by this author on: Oxford Academic PubMed Google Scholar W. Zhuo, Zhuo * *Corresponding author: whzhuo@fudan.edu.cn B. Chen, Chen H. Zhang Protection Dosimetry, Volume 141, Issue 4, October 2010, Pages 444–447, https://doi.org/10.1093/rpd/ncq250 Published: 10 September 2010
Abstract To overcome the time-resolution limitation inherent in airflow-through scintillation cell method for radon measurement, this study introduces a compartmental model elucidating behaviors of and its progeny within such cells. The computed results normalized equilibrium functions derived from model, provide quantitative insights into progression 222Rn over time, substantiating identified 2–3 hours. Laboratory experiments confirm efficacy proposed correction algorithm, showcasing...
Anthropogenic release of tritium from nuclear facilities is expected to increase significantly in the coming decades, which may cause radiation exposure humans through contamination water and food chains. It necessary urgent acquire detailed information about various environments for studying its behavior assessing potential risk. In atmosphere, although passive sampling technique provides a low-cost convenient way characterize dynamics tritiated vapor (HTO), single, simple sampler...
The calibration factors of alpha-track radon detectors (ATDs) are essential for accurate determination indoor concentrations. In this paper, the effects atmospheric parameters on were theoretically studied and partially testified. Based thermodynamics theory detection characteristics allyl diglycol carbonate (CR-39), 5 types ATDs calculated through Monte Carlo simulations under different conditions. Simulation results showed that factor increased by up to 31% with a decrease air pressure...
For accurate measurements of 220Rn concentration with airflow-through scintillation cell method, a theoretical study was performed for discussing the influences sampling flow rate, volumes tube and on measurements. It is found that high rate large inner volume as well small are not only preferable measuring low levels 220Rn, but also helpful enhancing measurement accuracy. In calibration experiments, both should be noted. The variations considered in fields.
Journal Article An improved electrostatic integrating radon monitor with the CR-39 as alpha-particle detector Get access D. Fan, Fan Institute of Radiation Medicine, Fudan University, 2094 Xietu Road, Shanghai 200032, China Search for other works by this author on: Oxford Academic PubMed Google Scholar W. Zhuo, Zhuo * *Corresponding author: whzhuo@fudan.edu.cn B. Chen, Chen C. Zhao, Zhao Y. Yi, Yi Zhang Protection Dosimetry, Volume 167, Issue 1-3, November 2015, Pages 121–125,...
Comparison is an important role in the quality control and assurance for any measuring system. Due to future legal regulations regarding radon levels air, maintaining system harmonization of results as well validation thoron systems important. The aim this work validate degrees equivalence measurement precisions existing five four located Asian countries (China, India, Japan Thailand) through comparison experiment. In project, experiment was performed order derive ratio between assigned...
Journal Article A new technique for measuring the concentrations of airborne radon progeny by using an imaging plate Get access H. Zhang, Zhang Institute Radiation Medicine, Fudan University, 2094 Xietu Road, Shanghai 200032, People's Republic China Search other works this author on: Oxford Academic PubMed Google Scholar B. Chen, Chen C. Zhao, Zhao W. Zhuo * *Corresponding author: whzhuo@fudan.edu.cn Protection Dosimetry, Volume 152, Issue 1-3, November 2012, Pages 109–113,...
Accurate measurement of low-level thoron gas and high-accuracy calibration devices are essential for assessing preventing radiological risks. This study aimed to develop a technique using an airflow-through scintillation cell both calibration. To achieve this, compartment model was developed estimate the influence progeny deposition accumulation on wall prevent overestimation thoron. A self-developed utilised implement validate this technique. The lower detection limit uncertainty were then...
For the calibration purpose of thoron (220Rn) measurements, solid sources with constant 220Rn emanation are generally desired. In this study, Th4+ in thorium nitrate powder was successfully exchanged to surfaces sodium benzenesulphonate resins a bead diameter ∼0.5 mm by using ion-exchange method. Tests emanating from ion-exchanged resin indicated that rates were nearly constant, provided both air humidity and temperature controlled. As can be easily prepared various sizes activities sources,...
NaI(Tl+Li) (NaIL) is a promising new inorganic scintillator for thermal neutron detection with the ability pulse shape discrimination (PSD). In this study, we first built dual-gamma/neutron sensitive detector based on NaIL scintillator, photomultiplier tube and custom-built circuit. Then, investigated its temperature response optimized PSD parameters, obtaining figure of merit (FOM) up to 4.5 at 0–50°C. Also, examined effect count rate detector's gamma performance; after optimization,...
Objective To evaluate the influence of indoor air filtration by purifier on behavior radon progeny and estimate its effects exposure to residents. Methods The concentrations with without were calculated theoretical model developed in this study. Based dose conversion factors attached unattached progeny, mitigation due estimated. Verification experiments conducted an airtight room. Results With rate increased, removal efficiency would appear more obvious. For room initial aerosol...
For accurate measurements of the secondary cosmic rays by using passive dosimeters, relative responses thermoluminescence dosimeter (TLD), optically stimulated luminescence (OSL) dosimeter, and radiophotoluminescent glass (RPLGD) were studied. The cosmic-ray shower generator was used to simulate at sea level. Monte Carlo simulations performed calculate air kerma absorbed doses in each kind dosimeter. results showed that compared with their gamma 137Cs, TLD, OSL, RPLGD 0.786, 0.707, 0.735...