論文

査読有り
2016年8月

Monte Carlo simulation for background study of geophysical inspection with cosmic-ray muons

GEOPHYSICAL JOURNAL INTERNATIONAL
  • Ryuichi Nishiyama
  • ,
  • Akimichi Taketa
  • ,
  • Seigo Miyamoto
  • ,
  • Katsuaki Kasahara

206
2
開始ページ
1039
終了ページ
1050
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/gji/ggw191
出版者・発行元
OXFORD UNIV PRESS

Several attempts have been made to obtain a radiographic image inside volcanoes using cosmic-ray muons (muography). Muography is expected to resolve highly heterogeneous density profiles near the surface of volcanoes. However, several prior works have failed to make clear observations due to contamination by background noise. The background contamination leads to an overestimation of the muon flux and consequently a significant underestimation of the density in the target mountains. To investigate the origin of the background noise, we performed a Monte Carlo simulation. The main components of the background noise in muography are found to be low-energy protons, electrons and muons in case of detectors without particle identification and with energy thresholds below 1 GeV. This result was confirmed by comparisons with actual observations of nuclear emulsions. This result will be useful for detector design in future works, and in addition some previous works of muography should be reviewed from the view point of background contamination.

Web of Science ® 被引用回数 : 23

リンク情報
DOI
https://doi.org/10.1093/gji/ggw191
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000379772500020&DestApp=WOS_CPL
ID情報
  • DOI : 10.1093/gji/ggw191
  • ISSN : 0956-540X
  • eISSN : 1365-246X
  • Web of Science ID : WOS:000379772500020

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