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| About This Publication and the JAEA Organizational Outline | ||
| 1 | Research and Development Related to the Accident at TEPCO’s Fukushima Daiichi NPS | |
| Assistance in Environmental Restoration and Decommissioning | ||
| 1-1 | Degradation of Fuel Debris Under the Effect of Ionizing Radiation －Formation of Solid Solution Improves Stability to Oxidative Degradation－ Yuta Kumagai | |
| 1-2 | Criticality Evaluation of Fuel Debris with Unclear Material Composition －Development of a New Subcritical Depletion Code for Monitoring Noble Gases－ Eka Sapta Riyana | |
| 1-3 | Clarifying the Failure Mechanism of the Lower Part of the RPV －Melting Test Assuming a Eutectic Reaction in the Complex Structure of a BWR－ Takuya Yamashita | |
| 1-4 | How to Effectively Remove Iodate from Solutions? －Coprecipitation of Iodate with Barite (BaSO4) Was Evaluated at a Molecular Level－ Kohei Tokunaga | |
| 1-5 | Characterization of Radioactive Waste for Safe Storage －Effect on the Chemical Composition of Carbonate Slurry－ Takuma Horita | |
| 1-6 | Realization of γ-Ray Nuclide Analysis Under Severe Radiation Fields －Development of a γ-Ray Spectrometry System Specific to High Dose Rates for Simple Nondestructive Assays－ Masaaki Kaburagi | |
| 1-7 | In-situ Monitoring System for Radioactive Aerosols －Real-Time Monitoring of Alpha Aerosols to Improve Worker Safety－ Youichi Tsubota | |
| 1-8 | Simultaneous Measurement of the Energy Spectra of Alpha, Beta, and Gamma Rays －Development of a Portable Continuous Air-Monitoring System for Detecting Alpha/Beta/Gamma Radioactive Material－ Yuki Morishita | |
| 1-9 | Novel Single-End Readout-Type Optical Fiber Radiation Sensor －Highly Sensitive Position Detection by Photon Wavelength Analysis Using a New Spectroscopy System－ Yuta Terasaka | |
| 1-10 | Visualization of Radioactive Contamination at the Decommissioning Site on a Three-Dimensional Map －Understanding Invisible Radioactive Contamination in a Virtual Space and Reducing Worker Exposure－ Yuki Sato | |
| 1-11 | Impact of Extreme Typhoons on Radiocesium Discharge －Comparison of Effects of Two Typhoons-Etau in 2015 and Hagibis in 2019－ Takahiro Nakanishi | |
| 1-12 | Approaching the Secrets of Long-Term Cesium Retention in Lichen －Computational Chemistry Solves the Energetics of Complexation of Metabolites with Cesium－ Masahiko Machida | |
| 1-13 | Rapid Analysis for Long Half-Life 99Tc －ICP-MS Analysis with Solid-Phase Extraction and Gas-Phase Reaction－ Makoto Matsueda | |
| 1-14 | Selective Detection of Trace Sr Isotopes Using Lasers －Simplified Pretreatment of Samples Containing Isobars and Stable Isotopes－ Yoshihiro Iwata | |
| 1-15 | Toward Confident Hot-Spot Visualization Using an Unmanned Helicopter －Improvement of Detection Accuracy by Selecting Data on the Flight Conditions－ Yoshiaki Shikaze | |
| 1-16 | Research on the Decreasing Trend of Atmospheric Radiocesium Concentration After the Accident －Assessing the Decrease Rate Based on Governmental Monitoring Results－ Tomohisa Abe | |
| 1-17 | Why Does the Air Dose Rate in Urban Areas Decline Quickly? －Reduction Effect Revealed by the Behavior of Radioactive Cesium－ Kazuya Yoshimura | |
| 2 | Research on Nuclear Safety and Emergency Preparedness | |
| Implementing Continuous Improvements in Safety and Emergency Preparedness | ||
| 2-1 | Understanding Reactor Risk Profiles Against External Events －Probabilistic Assessment of Internal Flooding-Induced Risks by a Dynamic Approach－ Kotaro Kubo | |
| 2-2 | Understanding Containment Vessel Flow During Severe Accident －Mass Transport Behavior Depending on the Relative Location of Outer Cooling and Initial Stratification－ Satoshi Abe | |
| 2-3 | Fuel Debris Form Prediction in a Severe Accident －Measurements of Mass Fractions of Agglomerated Debris Settled on the Floor of a PCV－ Yuzuru Iwasawa | |
| 2-4 | Parameter Determination for Assessing the Sheltering Effectiveness in Japanese Houses －Obtaining Data on Penetration Factor and Deposition Rate of Particulate and Elementary Iodine by Real House and Chamber Experiment－ Jun Hirouchi | |
| 2-5 | How Much Can Nuclear Piping Withstand Huge Earthquakes －Development of Seismic Fragility Evaluation Method for Aged Piping－ Yoshihito Yamaguchi | |
| 2-6 | A Path Toward Recycling and Landfill of Asbestos Waste Arising from Decommissioning －Development of Evaluation Method for Exposure Dose by Cleared Asbestos Waste－ Taro Shimada | |
| 3 | Advanced Scientific Research | |
| Fundamental Sciences to Realize the New Era of Nuclear Science and Technology | ||
| 3-1 | What is the Chemical Behavior of the Heaviest Element? －A Small Breach of the Periodic Law Found in the Volatility of Element 105, Dubnium－ Tetsuya K. Sato | |
| 3-2 | Probing the Strong Interaction with Superconducting Detectors －Drastic Precision Improvement in the X-Ray Spectroscopy of Kaonic Atoms－ Tadashi Hashimoto | |
| 3-3 | Slow Dynamics of Electrons in Uranium Compounds －Approaching the Mystery of Superconductors Leading to Quantum Computers－ Yo Tokunaga | |
| 3-4 | Topology-Based Manipulation of Magnets in Spintronics －New Principle for Power Saving in Magnetic Memories－ Yasufumi Araki | |
| 3-5 | Insight into Designing Highly Efficient Ortho-Para Hydrogen Conversion Catalysts －Demonstration of Fast Ortho-Para Conversion of H2 on a Stepped Surface－ Hirokazu Ueta | |
| 3-6 | Unveiling the Retention Mechanisms of Uranium (VI) on Host Rocks －Surface Sorption Process Related to Two Types of Sorption Species－ Huiyang Mei | |
| 3-7 | Towards Understanding the Coherent Properties of Bosons －Determination of the Josephson Current in a Bose-Einstein Condensate－ Shun Uchino | |
| 4 | Nuclear Science and Engineering Research | |
| Fundamental Technologies for Nuclear Energy Innovation | ||
| 4-1 | Development of a Low-Cost Transportable Device for Detecting Nuclear Materials －Successful Experimental Demonstration of a New Nondestructive Method－ Masao Komeda | |
| 4-2 | Connecting Nuclear Data with Transport Calculation －Development of Nuclear Data Processing Code FRENDY Version 2－ Kenichi Tada | |
| 4-3 | Unveiling the Mystery of the Radiation Damage that Does Not Follow the Conventional Theory －Radiation Damage Mechanism in Ceramics Irradiated with Swift Heavy Ions－ Norito Ishikawa | |
| 4-4 | Detailed Radioactive Plume Dispersion and Dose Calculations Considering Buildings in Local Areas －Development of a Local-Scale High-Resolution Atmospheric Dispersion and Dose Assessment System－ Hiromasa Nakayama | |
| 4-5 | Nuclear Fuel Cycle Simulator NMB4.0 Released －Development of Fast, Versatile, and Flexible NMB4.0 to Contribute to the Planning of Future Nuclear Energy Utilization Strategies－ Kenji Nishihara | |
| 4-6 | Toward the Realization of a Reliability-Oriented Accelerator for the Accelerator-Driven System －Robust Beam Optics Design of a 30-MW LINAC for Nuclear Transmutation－ Bruce Yee-Rendon | |
| 4-7 | Improving Adsorption Capacity for Medical Radioisotopes －Elucidation of Molybdate Ion Adsorption Mechanism in Alumina－ Yoshitaka Fujita | |
| 5 | Neutron and Synchrotron Radiation Research | |
| Contributions to Innovative Achievement in Science and Technology | ||
| 5-1 | Beam Measurement Using Light Produced by Beam-Gas Interaction －Development of a Gas Sheet Beam Profile Monitor－ Ippei Yamada | |
| 5-2 | Acceleration of Neutron Measurement by Deep Learning －Over 10-Fold Acceleration of Neutron Reflectometry Measurement by an Accurate Noise Reduction Method－ Hiroyuki Aoki | |
| 5-3 | Wide Bandwidth Neutron-Spin Polarizer －A Breakthrough in Neutron-Polarizing Supermirror with Very High Critical Momentum Transfer－ Ryuji Maruyama | |
| 5-4 | Discovery of Coupled Fluctuations with Protein Domain Structures and Active Sites －Analysis of Protein Dynamics by Neutron Scattering and Molecular Simulation－ Hiroshi Nakagawa | |
| 5-5 | Development of Nuclear Vitrification by Neutron Scattering －Nanoscopic Structure of Borosilicate Glass with Additives－ Ryuhei Motokawa | |
| 5-6 | Fabrication of Environment-Friendly Piezoelectric Materials －Local Structural Analysis of Bi0.5Na0.5TiO3 in the High-Temperature Phase－ Yasuhiro Yoneda | |
| 5-7 | How Heavy Electrons are Formed in Eu-Based Compounds －Direct Observation of the Band Structure of Eu 4f Orbitals, Which Have Magnetic and Localized Characteristics, by Synchrotron Radiation Experiments－ Ikuto Kawasaki | |
| 6 | HTGR Hydrogen and Heat Application Research | |
| Research and Development on HTGR, Hydrogen Production, and Heat Application Technologies | ||
| 6-1 | New Seismic Classification of the HTTR －Appropriate Seismic Classification Based on Technical Knowledge and Operation Experience－ Masato Ono | |
| 6-2 | Challenge to Measure the Power Distribution in Very-High-Temperature Core Environments －Development of a Power Distribution Measurement Method Using Neutrons Leaked from an HTGR Core－ Yuji Fukaya | |
| 6-3 | For Reducing the Cost of Construction of High-Temperature Gas-Cooled Reactors －Development of Cesium Trap Material for Coated Fuel Particles－ Jun Aihara | |
| 6-4 | Upgrading H2 Production Efficiency in the IS Process －Corrosion Stability Improvement of the H2 Separation Membrane for HI Decomposition－ Odtsetseg Myagmarjav | |
| 6-5 | Achievement of Longer-Term H2 Production in IS Process －Introduction of a Novel Operating Procedure Using a Closed-Loop System－ Nobuyuki Tanaka | |
| 6-6 | Development of a Novel RPV Cooling System for HTGRs －Comparison of the Structural Differences Between RPV Cooling Systems and Effects of External Parameters on RPV Cooling－ Kuniyoshi Takamatsu | |
| 6-7 | Toward More Accurate Core Analysis of High-Temperature Gas-Cooled Reactors －Development of a Core Analysis Method with Specified Graphite Porosities－ Shoichiro Okita | |
| 7 | Research and Development of Fast Reactors | |
| Development of the Technology Base and Infrastructure Toward Improving the Fast Reactor Cycle | ||
| 7-1 | Fast Simulation Method for Chemically Reacting Flows －Efficient Numerical Simulation for Developing New-Generation Nuclear Plants－ Wataru Kosaka | |
| 7-2 | Understanding Aerosol Behavior in Fast Reactor Accidents －Test on Aerosol Transport Behavior Using the MET Facility－ Ryota Umeda | |
| 7-3 | Failure Prediction of Fast Reactor Components －Cyclic Loading Test and Failure Prediction of Multiperforated Plates－ Masanori Ando | |
| 7-4 | Capturing the Oxygen Diffusion Phenomena in Nuclear Fuel －Measurement and Evaluation of the Oxygen Self-Diffusion Coefficient of MOX Fuel－ Masashi Watanabe | |
| 7-5 | Development of Fast Reactor Fuel for Reduction of Radioactive Waste －Evaluation of Thermal Conductivity of High Am-Bearing Mixed Oxide Fuel on Stoichiometry－ Keisuke Yokoyama | |
| 7-6 | Evaluation of Experiments in the Prototype Fast Reactor Monju －Solving Discrepancy Between Measurement and Calculation－ Kazuya Ohgama | |
| 7-7 | Toward Realization of Advanced MOX Fuels －Measurement of Slight Variations in the Oxygen Content of Fuels－ Shun Hirooka | |
| 8 | Research and Development on Fuel Reprocessing, Decommissioning, and Radioactive Waste Management | |
| Toward Decommissioning Nuclear Facilities and Managing Radioactive Waste | ||
| 8-1 | Toward the Design of the Disposal Facilities Considering the Environmental Standards －Change in Uranium Concentration in Groundwater Depending on the Facility Layout and Structure－ Rina Ogawa | |
| 8-2 | Establishment of a Treatment Method for Nuclear Fuel Material for Safe Storage －Stabilization Treatment of Nuclear Fuel Material Containing Organic Compounds－ Kohei Tada | |
| 8-3 | Toward Stabilization of Hazardous and Radio-Active Wastes －Characterization of Lead Stabilized with Alkali-Activated Material－ Junya Sato | |
| 8-4 | Coating Removal Technique for Painted Steel Surface －Performance Evaluation of Laser Cleaning－ Ikumi Yamane | |
| 8-5 | Decommissioning of a Facility with a History of Contamination Caused by a Fire Disaster in a Controlled Area －Collective Dismantling of the Uranium Enrichment Laboratory Using a Large Isolation Tent－ Junya Kokusen | |
| 8-6 | Dismantling a Tank Containing Liquid with α Nuclides －Exposure Reduction Measures and Acquisition of Work Data for Future－ Yuta Yokozuka | |
| 8-7 | New Method to Observe Fault Displacement Using a Conventional Device －Significant Progress Toward Greatly Enhanced Underground Utilization－ Eiichi Ishii | |
| 8-8 | Prediction of the Low-Permeability Domain in Soft Rock －Estimation of the Effective Hydraulic Conductivity by Hydromechanical Simulation－ Yusuke Ozaki | |
| 8-9 | Discriminating Tephra with Similar Chemical Compositions －Development of a Method for the in Situ Chemical Composition Analysis of Volcanic Glasses－ Saya Kagami | |
| 8-10 | Prediction of Radionuclide Migration by a Thermodynamic Sorption Model －Assessing the Impact of the Transition of Repository Condition on Radionuclide Migration－ Yuki Sugiura | |
| 8-11 | Migration Behavior of Carbon-14 in Buffer Material －Diffusion Experiments of Carboxylic Acid and Alcohol in Compacted Bentonite－ Takamitsu Ishidera | |
| 9 | Computational Science and E-Systems Research | |
| Computational Science for Nuclear Research and Development | ||
| 9-1 | Deep-Learning Model for High-Resolution Steady Flow Prediction －Convolutional Neural Networks for Multiresolution Steady Flow Prediction－ Yuichi Asahi | |
| 9-2 | Acceleration of Multiscale Fluid Simulation on GPU Supercomputer －Communication Reducing Method for Local Mesh Refinement－ Yuta Hasegawa | |
| 9-3 | Detecting the Quantum Fluctuation of Water －High-Precision Calculations of Water Using the General-Purpose Molecular Simulation Code PIMD－ Motoyuki Shiga | |
| 9-4 | Clarification of the Fundamental Properties of Radium －Ab Initio Molecular Dynamics Simulations and Extended X-Ray Absorption Fine Structure Measurements Revealed the Hydration Structure of Barium－ Akiko Yamaguchi | |
| 10 | Development of Science & Technology for Nuclear Nonproliferation | |
| Development of Technology and Human Capacity Building in the Fields of Nuclear Nonproliferation and Nuclear Security to Support the Peaceful Use of Nuclear Energy | ||
| 10-1 | Development of a Compact Nondestructive Analysis System for Measuring Nuclear Material －Demonstration of Neutron Resonance Transmission Analysis System Using a Laser-Driven Neutron Source－ Kota Hironaka, Jaehong Lee |
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