Tohoku University

Osaka University

Tokuyama Corporation

Tokai University Educational System

Tokuyams Corporation

Toshihisa Suyama

Akira Yoshikawa

Kentaro Fukuda

Takayuki Yanagida

Noriaki Kawaguchi

Sumito Ishizu

Hirofumi Kan

Yui Yokota

Shigeru Fujino

Nobuhiko Sarukura

Hiroshi Azechi

Mitsuo Nakai

Yasunobu Arikawa

Takahiro Murata

Yoshiyuki Usuki

Hideki Yoshida

[Problems to be Solved] A neutron scintillator excellent in neutron detection efficiency and n/&#x3b3; discrimination ability, and a neutron detector using the neutron scintillator are provided. [Means to Solve the Problems] A neutron scintillator comprising a eutectic body composed of laminar lithium fluoride crystals and laminar calcium fluoride crystals alternately arranged in layers, the thickness of the lithium fluoride crystal layers in the eutectic body being 0.1 to 5 &#x3bc;m; or a neutron scintillator comprising a eutectic body composed of laminar lithium fluoride crystals and laminar calcium fluoride crystals alternately arranged in layers, the calcium fluoride crystal layers in the eutectic body being linearly continuous in at least one direction; and a neutron detector basically constructed from any of the neutron scintillators and a photodetector.

Neutron scintillator and neutron detector

A neutron measurement apparatusA includes a neutron detection unit, a photodetection unitthat detects scintillation light emitted from the neutron detection unit, a light guide optical systemthat guides the scintillation light from the neutron detection unitto the photodetection unit, and a shielding memberwhich is located between the neutron detection unitand the photodetection unitfor shielding radiation passing in a direction toward the photodetection unit. Further, a scintillator formed of a lithium glass material in which PrFis doped to a glass material 20Al(PO)-80LiF is used as a neutron detection scintillator composing the neutron detection unit. Thereby, the neutron detection scintillator and the neutron measurement apparatus which are capable of suitably performing neutron measurement such as measurement of scattered neutrons from an implosion plasma can be realized.

Scintillator for neutron detection and neutron measurement device

A scintillator for neutron detection, comprising a metal fluoride crystal containing, as constituent elements, a metal having a valence of 2 or higher, such as calcium, aluminum or yttrium; lithium; and fluorine, the metal fluoride crystal containing 1.1 to 20 atoms per unit volume (atoms/nm) ofLi, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by, for instance, LiCaAlF, LiSrAlFand LiYF. The scintillator for neutron detection has high sensitivity to neutron rays, and is reduced in a background noise attributed to &#x3b3; rays.

Scintillator for neutron detection and neutron detector

Growing community of inventors

Shunan, Japan

Toshihisa Suyama