Osaka University

Hamamatsu-photonics K.k.

Tokai University Educational System

Hiroshi Azechi

Hirofumi Kan

Nobuhiko Sarukura

Toshiyuki Kawashima

Masakatsu Murakami

Ryo Yasuhara

Akira Yoshikawa

Toshihisa Suyama

Shigeru Fujino

Mitsuo Nakai

Yasunobu Arikawa

Takahiro Murata

Yoshiyuki Usuki

Hideki Yoshida

An object of the present invention is to efficiently improve uniformity of energy lines to be irradiated. A method of determining nuclear fusion irradiation coordinates according to the present invention is a method of calculating irradiation coordinates when energy lines are irradiated onto a nuclear fusion target, and comprises an initial arrangement step Sof virtually arranging electric charges Qat initial coordinates of the number of irradiation coordinates Non a spherical surface Sset by using random numbers, a coordinate analysis step Sof analyzing coordinates rof the electric charges Qin time series based on coulomb forces acting among the electric charges Qby constraining the coordinates ronto the spherical surface S, potential evaluation steps Sand Sof determining a timing at which potential energies of the electric charges Qwere stabilized based on the coordinates r, and an irradiation coordinate deriving step Sof deriving coordinates rat the timing at which potential energies were stabilized as irradiation coordinates of energy lines in a case where a nuclear fusion target is arranged at the center of the spherical surface S.

Method of determining nuclear fusion irradiation coordinates, device for determining nuclear fusion irradiation coordinates, and nuclear fusion device

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

Growing community of inventors

Suita, Japan

Hiroshi Azechi