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Aoi Lab (Center for Nuclear Study, CNS)
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A lab that explores the quantum structure of atomic nuclei using rare isotope beams and gamma-ray detectors.

AboutAbout the lab
Atomic nuclei are a stage for quantum phenomena.
The Aoi Lab investigates the properties of atomic nuclei through experiments.
Atomic nuclei are a stage for a wide range of quantum phenomena, including the competition between single-particle and collective motion, spontaneous symmetry breaking, and quantum entanglement.
By combining state-of-the-art gamma-ray tracking detectors with rare isotope beams, the lab studies the quantum structure that emerges in atomic nuclei.
Key terms
- Spontaneous symmetry breaking
- A phenomenon in which the laws themselves are symmetric, but the state that actually occurs does not have that symmetry.
- Gamma-ray tracking detector
- A device that tracks where inside the detector a gamma ray interacted, and determines its energy and direction of arrival in fine detail.
- Excitation energy
- A quantity that indicates how much higher in energy a nucleus is than its most stable state, the ground state.
ResearchResearch themes
Atomic nuclei are a stage for a wide range of quantum phenomena, including the competition between single-particle and collective motion, spontaneous symmetry breaking, coherence, and quantum entanglement and interference. As experimental techniques in nuclear physics advance dramatically, the lab studies the quantum structure that emerges in atomic nuclei.
*Illustrative imageQuantum structure of atomic nuclei
By combining state-of-the-art gamma-ray tracking detectors with rare isotope beams, the lab investigates the quantum structure that emerges in atomic nuclei, varying the nuclear species, excitation energy, and various quantum numbers.
*Illustrative imageSearching for nuclei with unusual shapes
Because of their quantum nature, atomic nuclei are often deformed. The lab aims to find the unusual shapes predicted by theory, such as triaxially asymmetric and pear shapes, by measuring nuclei produced at the OEDO/SHARAQ beamline with gamma-ray tracking detectors.
MembersFaculty
- ProfessorNori Aoi
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: “GRETINA Gamma Ray Detector” Argonne National Laboratory / CC BY-SA 4.0 (cropped)
- Quantum structure of atomic nuclei: “AGATA detector” Shantonu Biswas / CC BY-SA 4.0 (cropped)
- Searching for nuclei with unusual shapes: “RIKEN BigRIPS P4208204” Kestrel / CC BY-SA 4.0 (cropped)
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