Zobrazeno 1 - 10
of 423
pro vyhledávání: '"Daisuke Nakauchi"'
Autor:
Naoki Kawano, Kenji Shinozaki, Daisuke Nakauchi, Takumi Kato, Yuma Takebuchi, Hiroyuki Fukushima, Takayuki Yanagida
Publikováno v:
Optical Materials: X, Vol 23, Iss , Pp 100344- (2024)
Photoluminescence, scintillation, and thermoluminescence characteristics of the Tb3+-activated gallate glasses (20K2O–(11-x/2)La2O3–69Ga2O3–x/2Tb4O7, x = 0.1–1.0) were investigated. The Tb3+-activated gallate glasses exhibited photoluminescen
Externí odkaz:
https://doaj.org/article/aa12203af88b4590a3d91d6d1d634ed7
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:
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:
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
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
Publikováno v:
Journal of Asian Ceramic Societies, Vol 8, Iss 2, Pp 484-491 (2020)
CaF2 translucent ceramics with different concentrations of Tb were synthesized by the spark plasma sintering (SPS) method, and their photoluminescence, scintillation and dosimetric properties were characterized. The Tb-doped samples exhibited scintil
Externí odkaz:
https://doaj.org/article/268bf66fcc46434b82d32b4599155504
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