Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Toshiyuki Shizuma"'
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-7 (2023)
Abstract The 176Lu-176Hf nuclear decay is a powerful tool to measure the age of astrophysical and geological events and has been used as a “cosmochronometer”. However, the half-life values of 176Lu measured with various experiments differ signifi
Externí odkaz:
https://doaj.org/article/bb8573d8ef1c4738b8df1520bb2bfb1e
Autor:
Hideaki Ohgaki, Khaled Ali, Toshiteru Kii, Heishun Zen, Takehito Hayakawa, Toshiyuki Shizuma, Masaki Fujimoto, Yoshitaka Taira
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 9, p 093402 (2023)
To develop an isotope selective computed tomography imaging technique, a flat-laser Compton scattering γ-ray beam (F-LCS) by using a helical undulator installed in a storage ring has been proposed. An LCS beam with a broad energy spectrum and spatia
Externí odkaz:
https://doaj.org/article/2d4bb58d88e44665b771eb937d546351
Autor:
Khaled Ali, Heishun Zen, Hideaki Ohgaki, Toshiteru Kii, Takehito Hayakawa, Toshiyuki Shizuma, Masahiro Katoh, Yoshitaka Taira, Masaki Fujimoto, Hiroyuki Toyokawa
Publikováno v:
Applied Sciences, Vol 11, Iss 24, p 11866 (2021)
One of the most noteworthy aspects of computed tomography (CT) based on the nuclear resonance fluorescence (NRF) transmission method is the isotope selectivity that makes it possible to discern an isotope of interest from other isotopes within a samp
Externí odkaz:
https://doaj.org/article/89b9f6a060aa42a3a06a76054a334adf
Autor:
Heishun Zen, Hideaki Ohgaki, Yoshitaka Taira, Takehito Hayakawa, Toshiyuki Shizuma, Izuru Daito, Jun-ichiro Yamazaki, Toshiteru Kii, Hiroyuki Toyokawa, Masahiro Katoh
Publikováno v:
AIP Advances, Vol 9, Iss 3, Pp 035101-035101-7 (2019)
Computed Tomography (CT) using X-ray attenuation by atomic effects is now widely used for medical diagnosis and industrial non-destructive inspection. In this study, we performed a tomographic imaging of isotope (208Pb) distribution by the Nuclear Re
Externí odkaz:
https://doaj.org/article/14123100e56e42d6b4bc94860738a6d1
Autor:
Khaled Ali, Heishun Zen, Hideaki Ohgaki, Toshiteru Kii, Takehito Hayakawa, Toshiyuki Shizuma, Hiroyuki Toyokawa, Masaki Fujimoto, Yoshitaka Taira, Masahiro Katoh
Publikováno v:
Applied Sciences, Vol 11, Iss 8, p 3415 (2021)
Combining the nuclear resonance fluorescence (NRF) transmission method with computed tomography (CT) can be a novel method for imaging the isotope distributions, which is indispensable in nuclear engineering. We performed an experiment to reconstruct
Externí odkaz:
https://doaj.org/article/41b61bac648a4a8aa86fc5ad2195de47
Publikováno v:
Journal of Nuclear Science and Technology. :1-10
Autor:
Toshiyuki, Shizuma
加速器駆動システムにおける未臨界炉には鉛冷却高速炉が考えられており、その設計にはPb 同位体の中性子捕獲断面積データが必要である。204Pbは、天然存在比は小さいが中性子捕獲反
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::a1adc82a3acc2630565b3e6ea448c9e7
https://repo.qst.go.jp/records/86533
https://repo.qst.go.jp/records/86533
Autor:
Mohamed, Omer, Toshiyuki, Shizuma
中性子吸収反応で生じるガンマ線のエネルギーは数MeVであり、この領域の円偏光度は磁気コンプトン散乱を利用したポラリメータを用いて測定できる。円偏光度に対する感度である偏極
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::8280534d0c5938bf945bf44702479447
https://repo.qst.go.jp/records/85407
https://repo.qst.go.jp/records/85407
Autor:
T.T.Pham, E.Ideguchi, Aoi, N., A.Kohda, R.Orlandi, K.Nishio, H.Makii, M.Asai, F.Suzaki, K.Hirose, T.K.Sato, K.Tsukada, Y.Ito, Toshiyuki, Shizuma, Y.Fang, Kumar Raju, M., J-G.Wang, S.Guo, Liu, M., X.Zhou, N.Imai, N.Kitamura, S.Michimasa, Y.Toh, K.P.Rykaczewski, J.Ezold, S.Cleve, J.B.Roberto, R.A.Boll, S.Go, M.Tanaka
Exploring the new elements toward the high end of the nuclear chart is one of the most interesting topics in nuclear physics. A region of long-lived superheavy elements with proton and neutron numbers near Z=114, Z=120, N=184 – the so-called “Isl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::a1a8ddcd5b5326fe18b542793d60f5bb
https://repo.qst.go.jp/records/85408
https://repo.qst.go.jp/records/85408
Autor:
Takehito, Hayakawa, Toshiyuki, Shizuma
長寿命放射性同位体Lu-176は宇宙核時計として、太陽系形成の歴史や大陸の形成などに使われている。しかし、半減期については様々な手法で測定されているが、一致していない。そこで
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::26607253125797d75c98ad205e2cc6cc
https://repo.qst.go.jp/records/85854
https://repo.qst.go.jp/records/85854