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Yako Lab (CNS Experimental Nuclear Physics)
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The lab uses unstable nuclear beams to study the shape and oscillations of atomic nuclei.
AboutAbout the lab
Poking atomic nuclei to probe their properties
The Yako Lab studies the properties of atomic nuclei as many-body systems.
A nucleus is an assembly of protons and neutrons bound by the nuclear force, and the nucleons inside can move in unison in a phenomenon called collective excitation.
The lab strikes nuclei with ion beams accelerated to intermediate energies in a particle accelerator to shake them, and studies their excited states.
It also uses unstable nuclear beams, which have become available in recent years, to explore new aspects of atomic nuclei.
Key terms
- Unstable nuclei
- Nuclei with an imbalanced ratio of protons to neutrons that transform into other nuclei in a short time
- Collective excitation
- Motion in which the protons and neutrons inside a nucleus rotate or vibrate together rather than independently
- Giant resonance
- A state in which, when energy is given to a nucleus, the nucleons inside oscillate in unison at a high frequency
NewsLab news
A doctoral dissertation won the RIBF Thesis Award 2025
A paper on double charge-exchange reactions was published
ResearchResearch themes
Atomic nuclei are many-body systems made of protons and neutrons, and collective excitations, in which the nucleons inside move in unison, reflect fundamental properties of the nucleus. The lab studies these excited states using ion beams accelerated to intermediate energies in a particle accelerator, as well as unstable nuclear beams.
*Illustrative imageDouble Gamow-Teller Giant Resonance
The lab developed a method to induce nuclear transitions closely resembling double beta decay through double charge-exchange reactions with a carbon beam. At the RI Beam Factory at RIKEN, it observed the rate of this reaction.
*Illustrative imageAngular Momentum Transfer in Nuclear Spallation Reactions
Using nuclei in a special state called a high-spin isomer, the lab investigates how much angular momentum is transferred to the nucleus during a nuclear spallation reaction.
MembersFaculty
The members of the Yako Lab are faculty and master's students.As of 2025
- Associate ProfessorKentaro YakoPublications ↗
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Bamba LabFaculty of Science, Department of PhysicsStudy of high-energy cosmic phenomena using X-rays/gamma ray…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “RIKEN Superconducting Ring Cyclotron P4213478” Kestrel / CC BY-SA 4.0 (cropped)
- Double Gamow-Teller Giant Resonance: “RIKEN BigRIPS P4208204” Kestrel / CC BY-SA 4.0 (cropped)
- Angular Momentum Transfer in Nuclear Spallation Reactions: “BOL-detector with legs and cabling” René van Dantzig / CC0 (cropped)
- Related lab (Liang Lab): “NuclideMap stitched 2” NuclideMap.PNG: The viewer derivative work: Neokortex (talk) / Public domain (cropped)
- Related lab (Sako Lab): “Cosmic Ray Station ( )” Alastair Rae from London, United Kingdom / CC BY-SA 2.0 (cropped)
- Related lab (Fukushima Lab): “Lead-Ion Collision at NA49-CERN” CERN PhotoLab / CC BY 4.0 (cropped)
- Related lab (Bamba Lab): “Supernova Remnant SN 1006” X-ray: NASA/CXC/Rutgers/G.Cassam-Chenaï, J.Hughes et al.; Radio: NRAO/AUI/NSF/GBT/VLA/Dyer, Maddalena & Cornwell; Optical: Middlebury College/F.Winkler, NOAO/AURA/NSF/CTIO Schmidt & DSS / CC BY 4.0 (cropped)
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