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Abe, Noriaki; Hoshi, Hiroyuki*; Haji, Toshiki*; Sato, Katsushi*; Niki, Sota*; Hirata, Takafumi*; Iwano, Hideki*; Danhara, Toru*
Chishitsugaku Zasshi (Internet), 131(1), p.59 - 70, 2025/04
To constrain the upper limit of the depositional age of the Tanabe Group, Early-Middle Miocene forearc basin deposit, this study obtained the detrital zircon U-Pb ages separated from eight sedimentary rock samples. We obtained 221 concordant ages from 330 zircon grains. The youngest grain age was 19.4 Ma, suggesting the upper limit of the depositional age is younger than 19.4 Ma, and no grain showed the depositional age indicated by foraminifera (16.3-15.1 Ma). Large-scale volcanic activities occurred in the Middle Miocene around Kii Peninsula, mainly after 15 Ma. The lack of grain younger than 15 Ma suggests that the Tanabe Group was deposited before 15 Ma. Sluggish volcanic activities in the provenance areas before 15 Ma may have caused the lack of zircons having ages close to the depositional period inferred from foraminifera.
Abe, Noriaki; Sato, Katsushi*
Island Arc, 34(1), p.e70007_1 - e70007_18, 2025/01
Times Cited Count：1 Percentile：70.95(Geosciences, Multidisciplinary)Komatsu, Hisanori*; Kojima, Kentaro*; Funato, Yoshiki*; Matsuda, Yasuhiro*; Kijimura, Taiki*; Okuyama, Katsushi*; Yamamoto, Hiroko*; Iwami, Yukiteru*; Ebisu, Shigeyuki*; Nomachi, Masaharu*; et al.
JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 85, 2012/01
-PIGE/PIXE systemKomatsu, Hisanori*; Yamamoto, Hiroko*; Matsuda, Yasuhiro*; Kijimura, Taiki*; Kinugawa, Michihiko*; Okuyama, Katsushi*; Nomachi, Masaharu*; Yasuda, Keisuke*; Sato, Takahiro; Oikawa, Masakazu*
Nuclear Instruments and Methods in Physics Research B, 269(20), p.2274 - 2277, 2011/10
Times Cited Count：18 Percentile：76.75(Instruments & Instrumentation)-PIGE/PIXE analysisOkuyama, Katsushi*; Komatsu, Hisanori*; Yamamoto, Hiroko*; Pereira, P. N. R.*; Bedran-Russo, A. K.*; Nomachi, Masaharu*; Sato, Takahiro; Sano, Hidehiko*
Nuclear Instruments and Methods in Physics Research B, 269(20), p.2269 - 2273, 2011/10
Times Cited Count：10 Percentile：57.96(Instruments & Instrumentation)Nomura, Masahiro; Schnase, A.; Shimada, Taihei; Tamura, Fumihiko; Yamamoto, Masanobu; Sato, Tomonori; Yamamoto, Masahiro; Ezura, Eiji*; Hara, Keigo*; Hasegawa, Katsushi*; et al.
Proceedings of 2nd International Particle Accelerator Conference (IPAC 2011) (Internet), p.107 - 109, 2011/09
J-PARC 3 GeV Rapid Cycling Synchrotron (RCS) and 50 GeV Synchrotron (MR) employ the Magnetic Alloy (MA) loaded RF cavities. We observed the impedance reductions of MR RF cavities. Opening the RF cavities, we found that the impedance reductions were caused by the corrosion on the core cutting surfaces. The copper ions in the cooling water from hollow conductors of main magnets might accelerate the corrosion process.
Nakano, Katsushi; Amano, Kenji; Takeuchi, Shinji; Ikeda, Koki; Saegusa, Hiromitsu; Hama, Katsuhiro; Kumazaki, Naoki; Iwatsuki, Teruki; Yabuuchi, Satoshi; Sato, Toshinori
JNC TN7400 2002-008, 77 Pages, 2003/03
Osawa, Hideaki; Nakano, Katsushi; Takeuchi, Shinji; Hama, Katsuhiro; Amano, Kenji; Sato, Toshinori;
JNC TN7410 2002-005, 38 Pages, 2002/07
Nakano, Katsushi; Hama, Katsuhiro; ; ; ; Sato, Toshinori;
JNC TN7400 2000-002, 41 Pages, 1999/06
JNC-TN7400-2000-002.pdf:2.69MB
None
Nakano, Katsushi; Hama, Katsuhiro; ; ; ; Sato, Toshinori;
JNC TN7400 2000-001, 61 Pages, 1999/06
JNC-TN7400-2000-001.pdf:2.71MB
None
Matsuda, Yasuhiro*; Okuyama, Katsushi*; Komatsu, Hisanori*; Oki, Saiko*; Hashimoto, Naoki*; Sano, Hidehiko*; Yamamoto, Hiroko*; Iwami, Yukiteru*; Hayashi, Mikako*; Nomachi, Masaharu*; et al.
no journal, ,
no abstracts in English
Komatsu, Hisanori*; Matsuda, Yasuhiro*; Oki, Saiko*; Hashimoto, Naoki*; Okuyama, Katsushi*; Yamamoto, Hiroko*; Nomachi, Masaharu*; Sugaya, Yorihito*; Yasuda, Keisuke*; Sato, Takahiro; et al.
no journal, ,
no abstracts in English
Abe, Noriaki; Hoshi, Hiroyuki*; Haji, Toshiki*; Sato, Katsushi*; Niki, Sota*; Hirata, Takafumi*; Iwano, Hideki*; Danhara, Toru*
no journal, ,
no abstracts in English
