Development of nuclear emulsion for muography

Main Article Content

Kunihiro Morishima
Akira Nishio
Masaki Moto
Toshiyuki Nakano
Mitsuhiro Nakamura

Abstract

Muography (cosmic-ray muon radiography) is the non-destructive inspection by using muons produced by interactions between primary cosmic-rays and the Earth’s atmosphere. The principle of this technology is the measurement of absorption of incoming cosmic-ray muons, just like x-ray imaging technology. A nuclear emulsion is the high sensitive photographic film used for detection of three-dimensional trajectory of charged particles such as muons with the position resolution of sub-micron. A nuclear emulsion has following properties: high spatial resolution with thin detector structure, lightweight, flexibility of detector size and no requirement of electric power supply. These properties of a nuclear emulsion are suitable for a detector of muography. We are developing the nuclear emulsion at Nagoya University. In this paper, the current performances of the nuclear emulsion and the fully self-production techniques developed at Nagoya University are described.

Article Details

How to Cite
Morishima, K., Nishio, A., Moto, M., Nakano, T. and Nakamura, M. (2017) “Development of nuclear emulsion for muography”, Annals of Geophysics, 60(1), p. S0112. doi: 10.4401/ag-7387.
Section
SPECIAL ISSUE