Visualization of molten debris of Fukushima Daiichi Nuclear Power Plant by cosmic ray muon radiography
The Fukushima Daiichi Nuclear Power Plant experienced a nuclear meltdown due to the Great East Japan Earthquake on March 11, 2011, and currently a variety of efforts are going on to decommission the reactor. A non-destructive visualization technology that allows for the visualization of the inside of large structures, by taking advantage of the high penetration power of cosmic ray muons, has given an information inside the reactor. This article introduces the findings and current conditions obtained through observation by cosmic ray muon radiography using a nuclear emulsion, which the authors have worked on. Also, it discusses recent research efforts at the Hamaoka Nuclear Power Plant, where a verification test of the visualization of the base of the reactor is being conducted.
- 1 Institute for Advanced Research, Nagoya University