A5068747106- Nuclear Materials and Properties
- Nuclear reactor physics and engineering
- Radioactive element chemistry and processing
- Nuclear Physics and Applications
- Radioactive contamination and transfer
- Electrochemical Analysis and Applications
- Nuclear and radioactivity studies
- Fusion materials and technologies
- Radioactivity and Radon Measurements
- Conducting polymers and applications
- Adsorption and biosorption for pollutant removal
- Chemical Synthesis and Characterization
- Iron oxide chemistry and applications
- Analytical Chemistry and Sensors
- Magnetic Properties and Synthesis of Ferrites
- Covalent Organic Framework Applications
- Minerals Flotation and Separation Techniques
- Atmospheric and Environmental Gas Dynamics
- Arsenic contamination and mitigation
- Thermal and Kinetic Analysis
- Electrochemical sensors and biosensors
- Scientific Measurement and Uncertainty Evaluation
- Membrane Separation and Gas Transport
- Graphite, nuclear technology, radiation studies
- Extraction and Separation Processes
Korea Atomic Energy Research Institute
2007-2017
The correlation of the isotopic composition uranium, plutonium, neodymium, and cesium with burnup for high pressurized water reactor fuels irradiated in nuclear power reactors has been experimentally investigated. total was determined by Nd-148 fractional 235U U Pu mass spectrometric methods. compositions U, Pu, Nd, Cs after their separation from fuel samples were measured using thermal ionization spectrometry. contents these elements through an isotope dilution method 233U, 242Pu, 150Nd,...
The infrared spectra of uranium oxides (UOx) various O/U ratios (x = 2–2:667 in UOx) were measured by using ATR-FTIR order to investigate the applicability ATR technology characterization or nuclear fuel. samples prepared heating UO2 powder air atmosphere followed weighing determine gains oxygen. X-ray diffraction (XRD) patterns for same get information on their phases with increasing x. characteristic bands from UOx could be assigned well referring reported literature and comparing...
A determination method for 237Np in spent nuclear fuel samples was developed using an isotope dilution with 239Np as a spike. In this method, inductively coupled plasma mass spectrometry (ICP-MS) taken the instead of previously used alpha spectrometry. and were measured by ICP-MS gamma spectrometry, respectively. The recovery yield synthetic 95.9±9.7% (1S, n=4). contents 0.15, 0.25, 1.06 μg/mgU these values compared those from ORIGEN-2 code. fairly good agreement between measurements (m)...
Temperature-dependent variations of the interface between uranium dioxide and zirconium in UO2 -Zr systems were studied using X-ray photoelectron spectroscopy. The surface sample was oxidized to hyperstoichiometric UO 2+x composed U(IV), U(V), U(VI) valence states at room temperature, whereas consisting only U(IV) oxidation state appeared after annealing with zirconium. In sample, its spontaneously ZrO2 it variously changed heating sample. Furthermore, we observed a molten product α-Zr(O),...
The solubility of nickel ferrite in an aqueous solution boric acid was studied by varying the pH at temperatures ranging from 25°C to 320°C. A flow-through autoclave system specially designed and fabricated measure Fe hydrothermal solutions under high temperature pressure. performance this directly compared with conventional static state technique using a batch-type system. stability fluid velocity for verified prior measurement. influence chemical additives, such as H2, on also evaluated.