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Nuclear Science and Engineering
Fusion Science and Technology
Fukiushima Daiichi: 10 years on
The Fukushima Daiichi site before the accident. All images are provided courtesy of TEPCO unless noted otherwise.
It was a rather normal day back on March 11, 2011, at the Fukushima Daiichi nuclear plant before 2:45 p.m. That was the time when the Great Tohoku Earthquake struck, followed by a massive tsunami that caused three reactor meltdowns and forever changed the nuclear power industry in Japan and worldwide. Now, 10 years later, much has been learned and done to improve nuclear safety, and despite many challenges, significant progress is being made to decontaminate and defuel the extensively damaged Fukushima Daiichi reactor site. This is a summary of what happened, progress to date, current situation, and the outlook for the future there.
W. Horton, J. Pratt, H. L. Berk, M. Hirata (17R05)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 23-28
Technical Paper | Open Magnetic Systems for Plasma Confinement | dx.doi.org/10.13182/FST07-A1307
Articles are hosted by Taylor and Francis Online.
The tandem mirror remains an attractive magnetic confinement geometry for fusion. The absence of toroidal curvature and relatively weak internal plasma parallel current gives the system strongly favorable stability and transport properties. Recent GAMMA-10 experiments demonstrate that sheared plasma rotation suppresses turbulent radial losses. Total energy confinement times calculated for the GAMMA-10 are found to be significantly larger than the corresponding empirical confinement times in toroidal devices. The tandem mirror appears to have a qualitatively different form of drift wave radial transport from that in toroidal devices.