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Development of a Nondestructive Inspection Method for Trees Using Cosmic Rays

Akira Nishio, Institute of Materials and Systems for Sustainability, Nagoya University, Japan, Katsumi Ishiguro, Nobuko Kitagawa, Mitsuaki Kuno, Yuta Manabe, Kunihiro Morishima, Archaeological Institute of Kashihara, Nara Prefecture, Japan, Graduate School of Science, Nagoya University, Japan, Graduate School of Science, Nagoya University, Japan, Graduate School of Science, Nagoya University, Japan, Graduate School of Science, Nagoya University, Japan
2022 JOURNAL FOR ADVANCED INSTRUMENTATION IN SCIENCE  

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We proposed the use of cosmic rays to investigate the interiors of giant trees. Cosmic rays can easily penetrate the interiors of trees having a diameter of 1.5 m or more, which are difficult to investigate using conventional methods. We conducted two experiments to demonstrate the feasibility of this method. In the first experiment, we detected the difference between the presence and absence of a 0.5 m cavity in a 1.2 m diameter wooden plate. In the second experiment, we measured a cedar tree
more » ... ith a circumference of 11 m, with an unknown internal condition, and compared the data with our simulations. The result predicted that there would not be any cavities larger than 1.0 m in diameter. The cedar tree was then cut and it was confirmed that there were no cavities that were larger than 1.0 m in diameter.
doi:10.31526/jais.2022.251 fatcat:fssngre2szfnpfrtbnfinjjcqm
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Akira Nishio, Institute of Materials and Systems for Sustainability, Nagoya University, Japan, Katsumi Ishiguro, Nobuko Kitagawa, Mitsuaki Kuno, Yuta Manabe, Kunihiro Morishima, Archaeological Institute of Kashihara, Nara Prefecture, Japan, Graduate School of Science, Nagoya University, Japan, Graduate School of Science, Nagoya University, Japan, Graduate School of Science, Nagoya University, Japan, Graduate School of Science, Nagoya University, Japan. "Development of a Nondestructive Inspection Method for Trees Using Cosmic Rays." JOURNAL FOR ADVANCED INSTRUMENTATION IN SCIENCE (2022)