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Radioactivity Environmental Dynamics Engineering Lab (Institute for Integrated Radiation and Nuclear Science)
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The lab traces the fate of radioactive microparticles to inform nuclear disaster preparedness.
AboutAbout the lab
From the behavior of radioactive materials to nuclear disaster preparedness.
The Radioactivity Environmental Dynamics Engineering Lab studies the movement and state of radioactive materials that have spread into the environment in events such as nuclear disasters.
The Fukushima Daiichi Nuclear Power Plant accident revealed water-insoluble radioactive microparticles that had not been anticipated at the time.
The lab investigates how such microparticles form and how they behave in the environment, working to elucidate the circulation of microparticles on Earth and in space.
Using the research reactor KUR at the Kumatori Campus, it conducts research that is distinctive even on a global scale.
Key terms
- Neutron Activation Analysis
- An analytical method that irradiates a sample with neutrons and uses the radiation it then emits to examine trace amounts of elements without destroying the sample
- Research Reactor
- A nuclear reactor built not to generate electricity but to produce neutrons for experiments and analysis
- Microspherules
- Very small spherical particles that fall to Earth from space
ResearchResearch themes
Based on research into the movement of radioactive materials spread by nuclear disasters, the lab aims to build effective and rational nuclear disaster preparedness systems. It also works to elucidate the circulation of microparticles in the environment, whether or not they are radioactive.
*Illustrative imageInvestigating Microparticles Spread by Atomic Bombs and Nuclear Accidents
The lab studies the state and formation of radioactive materials that spread into the environment as microparticles in atomic bombings and the Fukushima Daiichi accident. Using the research reactor KUR, it applies methods such as neutron activation analysis, which measures trace amounts of elements without destroying the sample.
*Illustrative imageLearning About Material Movement on Earth from Microparticles
The lab examines the properties of microparticles through electron microscopy and radiation-based methods. It is extending its targets to volcanic ejecta and to microspherules that arrive from space, aiming to elucidate the movement of all kinds of microparticles in the environment.
*Illustrative imageBuilding a Rational System for Nuclear Disaster Preparedness
To consider how to reduce health and environmental effects when a nuclear disaster occurs, the lab organizes the knowledge and technologies gained from research on the movement of radioactive microparticles into fundamental data, and uses them to help realize a rational nuclear disaster preparedness system.
MembersFaculty
- ProfessorKoichi Takamiya
- Assistant ProfessorHaruka Kuwata
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Radioactive contamination monitor EKO-C” Łukasz Karolewski / CC BY-SA 4.0 (cropped)
- Investigating Microparticles Spread by Atomic Bombs and Nuclear Accidents: “IAEA Experts at Fukushima (02813336)” IAEA Imagebank / CC BY-SA 2.0 (cropped)
- Learning About Material Movement on Earth from Microparticles: “Scanning electron microscope photo of a dust particle collected by NASA in the stratosphere together with its Energy-dispersive X-ray spectrum” Dusteg / CC BY-SA 4.0 (cropped)
- Building a Rational System for Nuclear Disaster Preparedness: “radiation monitoring in Fukushima” Tamaki Sono / CC BY 2.0 (cropped)
- Related lab (Radioactive Waste Management Lab (Institute for Integrated Radiation and Nuclear Science)): “Dry Storage of Spent Nuclear Fuel ( )” Nuclear Regulatory Commission from US / CC BY 2.0 (cropped)
- Related lab (Disaster Prevention Technology and Policy Lab): “Yellowstone flood event 2022 swollen Lamar River and Lamar Valley ( )” Yellowstone National Park / Public domain (cropped)
- Related lab (Environmental Preservation Engineering Lab (Environment Preservation Center)): “University of Kyoto Katsura Campus” Bineapple / CC BY-SA 3.0 (cropped)
- Related lab (Natural and Social Environment Disaster Prevention Planning Lab): “Upper Marikina River Basin Protected Landscape dammed by Wawa Dam” Arius1998 / CC BY-SA 4.0 (cropped)
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