Abstract

Because of the limitation on the temporal resolution, standard real-time (30 frames/s) neutron radiography systems can not be used for observation of rapid transient phenomena. To overcome this limitation, a high-frame-rate neutron radiography system which enables imaging over 1000 frames/s has been developed and made available in the thermal neutron radiography facility in the JRR-3M. This system consists of a fluorescent converter, two quartz-glass mirrors, a lens, an image intensifier and a high speed digital video camera. In addition, seeking for higher temporal resolution, fluorescent converters are being developed and scintillation decay characteristics partially examined by the ultra-violet exposure test.

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