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149 papers
Investigation of the Status of Unit 2 Nuclear Reactor of the Fukushima Daiichi by the Cosmic Muon Radiography
Hirofumi Fujii, Kazuhiko Hara, Shugo Hashimoto +19
We have investigated the status of the nuclear debris in the Unit-2 Nuclear Reactor of the Fukushima Daiichi Nuclear Power plant by the method called Cosmic Muon Radiography. In th…
Investigation of Unit-1 Nuclear Reactor of the Fukushima Daiichi by Cosmic Muon Radiography
Hirofumi Fujii, Kazuhiko Hara, Kohei Hayashi +11
We have investigated the status of the nuclear fuel assemblies in Unit-1 reactor of the Fukushima Daiichi Nuclear Power plant by the method called Cosmic Muon Radiography. In this…
Imaging the Inner Structure of a Nuclear Reactor by Cosmic Muon Radiography
Hirofumi Fujii, Kazuhiko Hara, Shogo Hashimoto +15
We studied the inner structure of the nuclear reactor of the Japan Atomic Power Company (JAPC) at Tokai, Japan, by the muon radiography. In this study, muon detectors were placed o…
Discovery of a big void in Khufu's Pyramid by observation of cosmic-ray muons
Kunihiro Morishima, Mitsuaki Kuno, Akira Nishio +31
The Great Pyramid or Khufu's Pyramid was built on the Giza Plateau (Egypt) during the IVth dynasty by the pharaoh Khufu (Cheops), who reigned from 2509 to 2483 BC. Despite being on…
Experimental constraints on the spin and parity of the Z(4430)+
Belle Collaboration, K. Chilikin, R. Mizuk +188
We perform a full amplitude analysis of B0 -> psi' K+ pi- decays, with psi' -> mu+ mu- or e+ e-, to constrain the spin and parity of the Z(4430)-. The J^P=1+ hypothesis is favored…
Performance of a Remotely Located Muon Radiography System to Identify the Inner Structure of a Nuclear Plant
H. Fujii, K. Hara, S. Hashimoto +10
The performance of a muon radiography system designed to image the inner structure of a nuclear plant located at a distance of 64 m was evaluated. We concluded absence of the fuel…