Cosmic-ray muon radiography of volcanoes with emulsion cloud chambers Hiroyuki Tanaka ERI University of Tokyo The 3rd International Workshop on Nuclear.

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Cosmic-ray muon radiography of volcanoes with emulsion cloud chambers Hiroyuki Tanaka ERI University of Tokyo The 3rd International Workshop on Nuclear Emulsion Techniques － Modern techniques of nuclear emulsion and their applications －

Principle muon

Why Muon? p g electron proton muon

electron muon proton

Why ECC?

Why Radiography? Seismic Magnetoteluric Geodetic Gravimetric

Type of Volcano Vulcanian  Mt. Asama Dome  Mt. Usu

Mt. Asama

Result in Asama ECC Muon Detector

Mt. Usu

Result in Usu

Geodetic Model of Usu

Yokoyama 2002

Other type of volcanoes Strombolian  Satsuma Iwojima convection degassing Gas of t/day

Satsuma Iwojima (future observation) ECC

Future Prospects ３ d tomography real time monitoring  faster scanning system ECC

Summary Portable Power free Simple High resolution Acknowledgements: K. Niwa, T. Nakano, S. Takahashi, J. Yoshida, Nagoya University University of Tokyo Hokkaido University

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