Colloquium Hiroko Watanabe Nov 26, 2014 at 4:30pm

Post date: Nov 25, 2014 6:35:14 AM

제목: Neutrino Physics with KamLAND

연사: Prof. Hiroko Watanabe (Tohoku Univerisity)

일시: 2014년 11월 26일(수) 오후 4:30

장소: 제1과학관 31214 첨단e+강의실

초록: The Kamioka Liquid-scintillator Anti-Neutrino Detector (KamLAND) is located in a rock cavern in

the Kamioka mine, 1,000 m below the summit of Mt. Ikenoyama in Japan. The 2,700 meter water

equivalent overburden reduces the cosmic ray flux by a factor of roughly 10^-5 compared with the surface flax.

KamLAND is marked by the ability to detect low-energy antineutrino signals at 1,000 tons of ultra pure liquid

scintillator through the inverse beta reaction. We demonstrated the oscillation nature of neutrino flavor

transformation by observing electron antineutrinos from nuclear reactors and neutrino properties have been explored precisely.

Since neutrino interact with other particles only via weak interaction, they have extremely low reaction probabilities.

Such elusive property of neutrinos provides us with the ability to investigate optically invisible deep interior of

the astronomical objects, such as the Earth. Neutrino measurement evolved understanding of neutrino properties to

utilization of neutrino as a "probe".

In this talk, I will present overview of neutrino physics with KamLAND, including reactor neutrino, geo-neutrino

and extraterrestrial neutrino measurement results.