J
J. Haruna
Researcher at Hokkaido University
Publications - 8
Citations - 157
J. Haruna is an academic researcher from Hokkaido University. The author has contributed to research in topics: Scintillation & Crystal structure. The author has an hindex of 6, co-authored 8 publications receiving 147 citations.
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Journal ArticleDOI
Floating zone growth and scintillation characteristics of cerium-doped gadolinium pyrosilicate single crystals
S. Kawamura,Junichi Kaneko,Mikio Higuchi,T. Yamaguchi,J. Haruna,Yasuhiro Yagi,Kenzo Susa,Fumiyuki Fujita,A. Homma,Shusuke Nishiyama,Hiroyuki Ishibashi,Kazuhisa Kurashige,Michihiro Furusaka +12 more
TL;DR: In this article, the growth of cerium-doped gadolinium pyrosilicate (Gd2Si2O7:Ce) single crystals using floating zone growth method (FZ method) is accomplished.
Journal ArticleDOI
Investigation of Ce-doped Gd2Si2O7 as a scintillator material
S. Kawamura,Junichi Kaneko,Mikio Higuchi,Fumiyuki Fujita,A. Homma,J. Haruna,Shohei Saeki,Kazuhisa Kurashige,Hiroyuki Ishibashi,Michihiro Furusaka +9 more
TL;DR: In this paper, the use of Ce-doped Gd 2 Si 2 O 7 powder was investigated as a novel scintillation material, and it was shown that heavy Ce doping alters the crystal structure and the luminescence intensity is dependent not on Ce concentration, but on the triclinic structure formed by heavy ce doping.
Journal ArticleDOI
Scintillation Characteristics of ${\rm Ce}:{\rm Gd}_{2}{\rm Si}_{2}{\rm O}_{7}$ (Ce 2.5–30 mol%) Single Crystals Prepared by the Floating Zone Method
S. Kawamura,Junichi Kaneko,Mikio Higuchi,J. Haruna,Shohei Saeki,Fumiyuki Fujita,A. Homma,Shusuke Nishiyama,Shunsuke Ueda,Kazuhisa Kurashige,Hiroyuki Ishibashi,Michihiro Furusaka +11 more
TL;DR: Cerium-doped gadolinium pyrosilicate single crystals (Ce:Gd2Si2O7) with various Ce concentrations of 2.5-30 mol% with respect to the total rare earth sites were prepared by the floating zone method as discussed by the authors.
Journal ArticleDOI
Phase Relations around the Pyrosilicate Phase in the Gd2O3−Ce2O3−SiO2 System
S. Kawamura,Mikio Higuchi,Junichi Kaneko,Shusuke Nishiyama,J. Haruna,Shohei Saeki,Shunsuke Ueda,Kazuhisa Kurashige,Hiroyuki Ishibashi,Michihiro Furusaka +9 more
TL;DR: In this article, the melting and solidification behavior of the (Gd0.9Ce0.1)2Si2O7 (Ce:GPS) which shows attractive scintillation performance was investigated by means of the slow cooling floating zone (SCFZ) method.
Proceedings ArticleDOI
Response function measurement of Gd 2 Si 2 O 7 scintillator for neutrons
J. Haruna,Junichi Kaneko,Mikio Higuchi,S. Kawamura,Shohei Saeki,Y. Yagi,Hiroyuki Ishibashi,Fumiyuki Fujita,A. Homma,Michihiro Furusaka,Y. Kiyanagi +10 more
TL;DR: In this article, the response function measurement of GPS scintillator for thermal neutrons was carried out and GPS powder samples, size of each particle was 50 mum, showed lower light output than that of GPS single crystals, because absorption and scattering of scintillation light at the sample surface reduced the correction efficiency.