Speaker
Description
Research and development of cosmic-ray muon imaging using nuclear emulsion detectors is being carried out at Nagoya University. Nuclear emulsions are three-dimensional charged-particle tracking detectors based on silver halide photographic technology. Although they are lightweight, compact, and require no power supply, they provide submicron spatial resolution and milliradian angular resolution. After exposure, the developed emulsion films are read out by a high-speed automated track-scanning system and analyzed in detail. We are currently working on the development of higher-sensitivity nuclear emulsions as well as a next-generation readout system. Taking advantage of these unique features, we are pursuing nondestructive imaging of a wide variety of targets, including archaeological remains, civil infrastructure, subsurface structures, and the internal structure of trees. In this presentation, we report on the current status of these developments.