Chapter

Silver Halide Nanocrystals and Nuclear Particle Detectors

Tadaaki Tani

in Photographic Science

Published in print August 2011 | ISBN: 9780199572953
Published online January 2012 | e-ISBN: 9780191731266 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199572953.003.0007
Silver Halide Nanocrystals and Nuclear Particle Detectors

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AgX grains in nuclear-truck emulsions for analyzing neutrino oscillation by the OPERA project and for detecting unknown nuclear particles (i.e., dark matter) are characterized in the classification of the grains with respect to their sizes. The analysis is based on the number of electron–hole pairs per grain needed for rendering a half of AgX grains developable and the number of electron–hole pairs created by a nuclear particle. The analysis is also made on the reset treatment of OPERA films, which erases already-formed nuclear trucks without deteriorating their sensitivity. The problems to be solved for detecting dark matter are discussed.

Keywords: nuclear emulsions; nuclear tracks; neutrino oscillation; dark matter; reset treatment

Chapter.  7537 words.  Illustrated.

Subjects: Atomic, Molecular, and Optical Physics

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