A nuclear emulsion detector for the muon radiography of a glacier structure

Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Samuel Käser, Alessandro Lechmann, David Mair, Ryuichi Nishiyama, Ciro Pistillo, Paola Scampoli, Fritz Schlunegger, Mykhailo Vladymyrov

研究成果: ジャーナルへの寄稿学術誌査読

8 被引用数 (Scopus)

抄録

Cosmic ray muons can be used to image the interior of geological sites provided that one employs detectors able to operate in the specific harsh conditions of the mountain environment. We designed and developed a detector exploiting the nuclear emulsion technique to assess the bedrock profile underneath an alpine glacier. Nuclear emulsions do not need any electric power supply or maintenance and allow for the measurement of the muon flux and direction behind a large target volume. The 3D density distribution of the material traversed by muons can then be assessed, bringing relevant information on the shape of the boundary between the glacial ice and the underlying bedrock. This new methodology in the geological field was recently tested in a campaign of measurements in the Jungfrau region of the central Swiss Alps. It was shown that the bedrock surface position can be measured with a resolution of about 5% when the traversed target is about 100 m thick. Characteristics and performance of the method are reported here and demonstrate that muon radiography based on emulsion detectors represents a powerful tool for the geological study of glaciers.

本文言語英語
論文番号7
ジャーナルInstruments
2
2
DOI
出版ステータス出版済み - 6月 2018

!!!All Science Journal Classification (ASJC) codes

  • 器械工学

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