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Space travelers could assist in healing nuclear scar

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Science: Researchers examine use of cosmic ray radiography on damaged reactor cores

Researchers from Los Alamos National Laboratory have devised a method to use cosmic rays to gather detailed information from inside the damaged cores of the Fukushima Daiichi nuclear reactors, which were heavily damaged in March 2011 by a tsunami that followed a great earthquake.

In a paper in Physical Review Letters, researchers compared two methods for using cosmic-ray radiography to gather images of nuclear material within the core of a reactor similar to Fukushima Daiichi Reactor No. 1. The team found that Los Alamos’ scattering method for cosmic ray radiography was far superior to the traditional transmission method for capturing high-resolution image data of potentially damaged nuclear material.

“Within weeks of the disastrous 2011 tsunami, Los Alamos’ Muon Radiography Team began investigating use of Los Alamos’ muon scattering method to determine whether it could be used to image the location of nuclear materials within the damaged reactors,” said Konstantin Borozdin of Los Alamos’ Subatomic Physics Group and lead author of the paper.