The most fundamental particles among the currently identified components of the universe are called elementary particles. Electrons and photons are also elementary particles, and neutrinos are in this category. Although neutrinos are the second most abundant particle in the universe after light, they are difficult to detect and their nature as a particle is not yet precisely understood. I study neutrinos themselves as elementary particles, and various phenomena that can be understood by observing neutrinos.
Oscillations pattern of anti-electron-neutrinos measured by the KamLAND experiment Geo-neutrino energy distribution successfully observed for the first time by the KamLAND experiment. Installation work of balloon in the KamLAND-Zen experiment Scintillation balloon used in elementary-particle experiments (under development)
List of current research topics
Search for neutrino-less double beta decay to verify the particle-antiparticle identity (Majorana) of neutrinos - Search for the signal in the world's highest sensitivity detector KamLAND - Development of a xenon bubble chamber detector for the future high sensitivity observations
Geo-neutrino observations to measure geothermal heat sources
Research on the timing of the disappearance of the Earth's oceans
Development of ultra-low radiation measurement methods, ultra-low radiation environment construction, and cleaning techniques, related to the above.
Related industries
Radioactivity analysis
Affiliated academic society
The Physical Society of Japan, The volcanological society of Japan
obihiro.ac.jp 
