Zobrazeno 1 - 10
of 620
pro vyhledávání: '"Noriaki Kawaguchi"'
Autor:
Prom Kantuptim, Takumi Kato, Daisuke Nakauchi, Nakarin Pattanaboonmee, Noriaki Kawaguchi, Kenichi Watanabe, Weerapong Chewpraditkul, Takayuki Yanagida
Publikováno v:
Photonics, Vol 11, Iss 7, p 673 (2024)
Gadolinium pyrosilicate (GPS, Gd2Si2O7) single crystals with different doping concentrations of Tb (0.1–2.0 mol%) are successfully fabricated using the floating-zone technique. In this work, the dependence of Tb-doping concentration on the photolum
Externí odkaz:
https://doaj.org/article/38780b65f2174949a923e6621efaa451
Autor:
Dongsheng Yuan, Encarnación G. Víllora, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida, Kiyoshi Shimamura
Publikováno v:
Applied Physics Express, Vol 17, Iss 1, p 015502 (2024)
Ce:Li _6 Y(BO _3 ) _3 (LYBO) is a well-known candidate for thermal neutron detection with a very high Li concentration (3.06 × 10 ^22 /cm ^3 ). So far, as-grown crystals exhibit a milky appearance that compromises their performance as scintillators.
Externí odkaz:
https://doaj.org/article/b678c853a67247b0b8136da4afb9b017
Autor:
Yuma Takebuchi, Masanori Koshimizu, Kensei Ichiba, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Publikováno v:
Materials, Vol 16, Iss 13, p 4502 (2023)
Eulytite-type Ba3RE(PO4)3 (RE = Y, La, and Lu) single crystals were synthesized by the floating zone method, and their scintillation properties were investigated. The powder X-ray diffraction measurement revealed that the single phase of Ba3RE(PO4)3
Externí odkaz:
https://doaj.org/article/91625468503b4bd087e2da263e4b5878
Autor:
Taisei Hayashi, Kensei Ichiba, Daisuke Nakauchi, Kai Okazaki, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Publikováno v:
Photonics, Vol 10, Iss 6, p 654 (2023)
Mg4Ta2O9 single crystals doped with 0.01, 0.1, and 1% Er were grown using the floating zone method, and their photoluminescence and scintillation properties were studied. X-ray diffraction analysis confirmed that all samples had a hexagonal structure
Externí odkaz:
https://doaj.org/article/2e3beea2869245b3980ca9ef63f27461
Autor:
Daichi Onoda, Hiromi Kimura, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Publikováno v:
Journal of Asian Ceramic Societies, Vol 9, Iss 3, Pp 1282-1289 (2021)
We fabricated Tl-doped NH4Cl transparent ceramics using SPS method with varying Tl concentrations (0%, 0.01%, 0.05%, 0.1%, 0.5%, and 1%) and evaluated the properties of photoluminescence (PL), radioluminescence (RL), and optically stimulated luminesc
Externí odkaz:
https://doaj.org/article/966c508cc599483a8576d88da5d72d49
Autor:
Takanori Matsubara, Takayuki Yanagida, Noriaki Kawaguchi, Takashi Nakano, Junichiro Yoshimoto, Maiko Sezaki, Hitoshi Takizawa, Satoshi P. Tsunoda, Shin-ichiro Horigane, Shuhei Ueda, Sayaka Takemoto-Kimura, Hideki Kandori, Akihiro Yamanaka, Takayuki Yamashita
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)
Scintillators emit visible luminescence when irradiated with X-rays and may enable remote optogenetic control of neurons deep in the brain. The authors inject an inorganic scintillator to activate and inhibit midbrain dopamine neurons in freely movin
Externí odkaz:
https://doaj.org/article/30586a4d7471470ab7f1c8b1080aa23f
Publikováno v:
Photonics, Vol 10, Iss 2, p 211 (2023)
The objective of this study is to examine the impact of Li-doping on the radiophotoluminescent (RPL) properties of CaF2. Before ionizing irradiation, Li-doped CaF2 exhibited no photoluminescence (PL) under excitation in the range of 250–700 nm. Aft
Externí odkaz:
https://doaj.org/article/b0207e1b04e942b2bf2b249c810507f8
Autor:
Daiki Shiratori, Hirokazu Masai, Takumi Kato, Go Okada, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
Abstract A glass phosphor is an attractive material for applications in radiation detections because of its high workability and availability with a wide range of chemical compositions. Recently, X-ray-induced luminescence of glasses containing vario
Externí odkaz:
https://doaj.org/article/bd04eac51101412a82924a0b9a40743a
Autor:
Kensei Ichiba, Kai Okazaki, Yuma Takebuchi, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Publikováno v:
Materials, Vol 15, Iss 24, p 8784 (2022)
Undoped, 0.5, 1.0, and 2.0% Nd-doped Bi4Si3O12 (BSO) crystals were synthesized by the floating zone method. Regarding photoluminescence (PL) properties, all samples had emission peaks due to the 6p–6s transitions of Bi3+ ions. In addition, the Nd-d
Externí odkaz:
https://doaj.org/article/f898e5e5a2cf4bccb0e47b0c777cfeff
Publikováno v:
Sensors, Vol 22, Iss 24, p 9818 (2022)
The Nd-doped LaMgAl11O19 single crystals were synthesized by the floating zone method, and the photoluminescence and scintillation properties were evaluated. Under X-ray irradiation, several sharp emission peaks due to the 4f–4f transitions of Nd3+
Externí odkaz:
https://doaj.org/article/13ef37fce6c9471d8947dde3492e5bad