Physics
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ep%26s...62..173y&link_type=abstract
Earth, Planets and Space, Volume 62, Issue 2, p. 173-177.
Physics
1
Scientific paper
Muon radiography has recently made it possible to perform imaging of the internal structure of a volcano. Muon-detecting experiments were carried out at Asama and Usu volcanoes using a newly developed scintillator. The goal was to build a large detector that would improve the quality of the data collected by the muon radiography experimental set-up that is currently being used to study volcanic activities. To this end, a cost-effective plastic scintillator was developed by a simple "heating-melting method". The detector consists of planes of scintillator strips and is currently in the prototyping phase. Using a cosmic-ray muon source, we found that the signal from our scintillator was consistent with the zenith-angle dependence of the cosmic-ray muon spectrum with no significant attenuation effects in the scintillator. We confirmed that our scintillators can be incorporated into a portable assembly-type cosmic-ray muon telescope system.
Taira Hajime
Tanaka Hiroyuki K. M.
Yamashina Tadashi
Yamashina Y.
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