Japan Atomic Energy Agency

Chichibu Fuji Co., Ltd.

Horshin Electronics Co., Ltd.

Hoshin Electronics Co., Ltd.

Masumi Ebine

Masaki Katagiri

Tatsuya Nakamura

Atsushi Birumachi

Yutaka Yoribayashi

Akira Ohzu

Noriaki Tsutsui

A neutron detector withoutHe gas, provided with a translucent type plate neutron scintillator having the structure capable to emit fluorescence from double-sides; the neutron scintillator is composed of ZnS fluorescent substance and a neutron converter which containsLi orB, and arranged at an angle of 45 degrees from the neutrons which are incident in parallel all together, inside of a cylindrical detector housing with the circular or square section where the specular reflector with the reflectance of 90% or more is arranged internally, and the fluorescence emitted when the neutron enters the scintillator is detected by two photo multipliers arranged on both sides, and signals output from these two photo multipliers are processed to be taken out as a neutron signal.

Neutron detector and neutron image detector with scintillator

A neutron image detection method is disclosed, which collects a fluorescent light generated by a neutron incident at a designated position interval in one-dimensional geometry and determines an incident position of the neutron by detecting the collected fluorescent light, in which the fluorescent light is detected by a photon counting method; a pulse signal generated by an individual output photon is extracted on the basis of a clock signal generated with the same time interval as the time width of the pulse signal generated by a single photon; a count-value distribution is obtained in terms of incident position as variable determined by a single neutron incident by counting the pulse signal output; and a neutron incident position is determined by calculating a median point on the basis of the obtained count-value distribution.

Neutron image detecting method and neutron image detector using its method

Growing community of inventors

Naka, Japan

Masumi Ebine