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Atomic Energy Lab
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A lab that studies fuel, materials, and neutrons toward the early realization of fusion reactors.
AboutAbout the lab
Comprehensive engineering research toward fusion reactors.
The Atomic Energy Lab conducts comprehensive engineering research covering hydrogen production technology, fusion reactor design, materials engineering, and environmental impact.
It studies methods of extracting hydrogen isotopes from liquid metals, materials for fusion reactors, and the generation and measurement of neutrons using discharge-type fusion neutron sources.
The lab also engages in outreach such as open lectures and exhibits using LEGO and visiting lectures; in 2017, students built a LEGO fusion reactor at the ITER Organization in France.
The lab belongs to the Institute of Advanced Energy, and is a cooperating division of the Department of Energy Conversion Science, Graduate School of Energy Science; students join at the graduate level.
Key terms
- Blanket
- The part surrounding the core of a fusion reactor. It extracts heat from neutrons and produces tritium, the fuel
- Hydrogen isotopes
- Variants of hydrogen with different masses. Besides ordinary hydrogen, there are deuterium and tritium, which serve as fusion fuel
- Neutron radiography
- A method of directing neutrons at an object and imaging its interior using the neutrons that pass through
- ITER
- The International Thermonuclear Experimental Reactor, under construction in France through international cooperation
NewsLab news
A paper from the lab was published in Fusion Engineering and Design
A master's student received the Excellent Poster Presentation Award at the Institute of Advanced Energy Student Research Presentation
A paper investigating the corrosion behavior of F82H steel by LTZO pebbles was published in Nuclear Materials and Energy
ResearchResearch themes
Fusion reactors are being researched as a next-generation energy source with inexhaustible fuel and no high-level radioactive waste. Aiming at the early realization of fusion reactors, the lab studies a broad range of topics, from hydrogen production technology and reactor design to materials engineering and environmental impact.
Recovering Hydrogen Isotopes from Liquid Metals
In fusion blankets that use a liquid breeder, efficient production and recovery of hydrogen isotopes is a challenge. The lab studies recovering hydrogen isotopes from liquid lithium-lead using the vacuum sieve tray (VST) method, which sprays droplets into a vacuum, and electrochemical methods.
Materials for Fusion Reactors
Fusion reactor materials must have heat durability, radiation resistance, strength, and chemical stability at high temperatures. The lab works on developing materials such as structural steels, tritium breeders, neutron multipliers, and divertors, and on experiments such as corrosion of structural materials by flowing high-temperature liquid metals.
Neutron Generation and Measurement
The lab operates spherical and cylindrical discharge-type fusion neutron sources and conducts experiments on neutron generation, measurement, and neutron radiography. It also studies operation in a mode that confines the fuel, using hydrogen storage alloys.
MembersFaculty
The members of the Atomic Energy Lab consist of faculty, researchers, administrative assistants, and doctoral and master's students (including those in the International Energy Science Course).As of 2026
- Associate ProfessorJuro Yagi
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