Nuclear Radiation Group conducts wide range of research, nuclear physics, accelerator science, radiation detector development, and medical application. Our group consists of Accelerator and Nuclear Physics Laboratory and Applied Nuclear Physics Laboratory. Research Center for Accelerator and Radioisotope Science (RARIS) is base of our group and a cross-disciplinary facility and aims to promote the versatile use of accelerators and manage radioactive isotopes (RIs), including short-lived and high-level RIs.

　Our group measure and analyze various radiation from nuclear reactions and decays of unstable nuclei. Through this research, we investigate diverse behavior within nuclei, including nuclear structure, nuclear reaction, nucleon-nucleon interaction, and so on.

Accelerator and Nuclear Physics Laboratory mainly promote the following 3 projects:

1. Elucidation of the process of element synthesis in the universe
   Triple alpha reaction is especially an important process for the synthesis of elements in the universe. We study this reaction rate under high-temperature and high-density environment.
2. Research for alpha-cluster structure in atomic nuclei
   Atomic nuclei have certain states in which alpha particles can behave as quasi-particle, known as clusters. Among such states, we especially search for the alpha-condensed states in nuclei, where all the alpha particles are condensed into the same lowest-energy and state in the nuclei.
3. Advancement of the cyclotron and ion sources
   Not only to achieve the above projects, but also to innovate in the production of RIs for medical use, we develop and improve our cyclotron and ion sources. One of the topics is the development of the accelerating system for the high-intensity negative ion beam.

At Applied Nuclear Physics Laboratory, we develop high-precision irradiation techniques of the high-energy ion beams from the cyclotron, evaluation techniques of 3D radiation dose, generation techniques of thermal/epi-thermal neutrons from nuclear reaction with intense beam (compact neutron source with the accelerator). In addition, we develop high-resolution and high-efficiency TlBr (thallium bromide) semiconductor detector which can be operated at room temperature in cooperation with the School of Engineering. We promote a wide range of research field from fundamental physics and applied usage, for example, from nuclear physics to innovative medical physics about particle-beam therapy and boron neutron capture therapy (BNCT).