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Neutron Beam Applied Science and Engineering Lab
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The lab uses neutron beams to look inside objects without destroying them.
AboutAbout the lab
Seeing the invisible inside with neutrons
The Neutron Beam Applied Science and Engineering Lab studies techniques that use neutron beams to examine the inside of objects.
From the changes that occur when neutrons pass through an object, the lab can examine the crystal structure of metals, the elements they contain, temperature, and more without destroying the object.
Using the university's accelerator facility (Hokkaido University LINAC) and neutron source (HUNS), the lab covers everything from developing neutron sources and instruments to analyzing materials, cultural heritage objects, and food.
In collaboration with companies, the lab also works on preventing malfunctions in semiconductors (soft errors) caused by cosmic rays.
Key terms
- Neutron
- An uncharged particle that makes up atomic nuclei. It passes through objects easily and can be used to examine their interior
- Bragg edge
- A phenomenon in which, because neutrons are scattered by crystals, the amount transmitted changes abruptly at certain wavelengths. It provides clues to the crystal structure
- Soft error
- A temporary malfunction, such as stored information being rewritten, that occurs when radiation such as cosmic rays hits a semiconductor
NewsLab news
Doctoral and master's students received the Outstanding Presentation Award from the Accelerator and Beam Science Division of the Atomic Energy Society of Japan
In joint research with Mitsui Mining & Smelting, developed gadolinium metal foil that blocks thermal neutrons produced by cosmic rays (press release)
An undergraduate fourth-year student received the Outstanding Presentation Award at the Applied Quantum Science Division graduation thesis presentations
A master's student received the Excellence Award at the student poster session of the Atomic Energy Society of Japan 2026 Spring Annual Meeting
In joint research with NTT, demonstrated that protons and neutrons cause semiconductor failures at the same rate (IEEE Trans. Nucl. Sci.)
ResearchResearch themes
The lab focuses on pulsed neutron imaging, which uses neutron beams to visualize a material's crystal structure, elements, temperature, and more without destroying it. Its work is wide-ranging, including accelerator-based neutron sources, neutron devices, and analysis instruments, combination with X-rays, materials research, and prevention of soft errors caused by cosmic rays.
*Illustrative imageDeveloping the Bragg Edge Method and Related Techniques
This is a method of quantitatively examining a material's crystal structure and metallic microstructure from the spectrum obtained when pulsed neutrons pass through an object. Combined with CT techniques, it also enables 3D imaging, and applications are advancing to automotive parts, steel materials, iron cultural heritage such as Japanese swords, and food.
*Illustrative imageDeveloping the Resonance Absorption Method
This is a method of quantitatively determining the types of elements and nuclei contained in a material, as well as its temperature. The lab has also developed a way to view temperature in 3D without destroying or touching the object, and applies it to element distribution inside cultural heritage objects, temperature distribution inside motors, and evaluation of the integrity of nuclear reactor fuel.
*Illustrative imageAnalysis Methods Using AI
The lab develops methods that use machine learning and deep learning to extract information about materials from neutron transmission spectra and to predict spectra. It aims to apply them to the analysis of metallic materials with complex crystal structures and to imaging of the ratio of solid to liquid.
*Illustrative imageDeveloping Accelerator-Based Pulsed Neutron Sources
Using accelerators, the lab develops efficient pulsed neutron sources that achieve both high intensity and short pulses. Using simulations that track the motion of particles, it studies the design of neutron sources and radiation shielding.
MembersFaculty
The members of the Neutron Beam Applied Science and Engineering Lab consist of faculty, secretaries, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakashi Kamiyama
- Associate ProfessorHirotaka Sato
VoicesStudent voices
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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: “Neutron Image of Asiatic Lilies Inside a Lead Cask ( )” National Institute of Standards and Technology / Public domain (cropped)
- Developing the Bragg Edge Method and Related Techniques: “Kodachi-Sword-Hachiya-Nagamitsu-13th-Century - cropped image close up of hamon” Artanisen / CC BY-SA 4.0 (cropped)
- Developing the Resonance Absorption Method: “Stator windings” K.kudelina / CC BY 4.0 (cropped)
- Analysis Methods Using AI: “Laue-Cubic-Disoriented” Tizeff / CC BY-SA 3.0 (cropped)
- Developing Accelerator-Based Pulsed Neutron Sources: “Bates Linear Accelerator 001” United States Department of Energy / Public domain (cropped)
- Related lab (Quantum Beam Materials Analysis and Harsh-Environment Semiconductor Device Engineering Lab): “Syn diamonds” 2x910 / CC BY-SA 4.0 (cropped)
- Related lab (Quantum Energy Conversion Materials Lab): “TEM image of gold nanoparticles and nanorods” Fionán / CC BY-SA 4.0 (cropped)
- Related lab (Plasma Bio-Application Engineering Lab): “LHD plasma vacuum vessel” National Institute for Fusion Science / CC BY-SA 4.0 (cropped)
- Related lab (Plasma Materials Engineering Lab): “Plasma generation in air” Rcaravit / CC BY 4.0 (cropped)
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