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Matsueda, Makoto; Kawakami, Tomohiko*; Koarai, Kazuma; Terashima, Motoki; Fujiwara, Kenso; Iijima, Kazuki; Furukawa, Makoto*; Takagai, Yoshitaka*
Chemistry Letters, 51(7), p.678 - 682, 2022/07
Times Cited Count:2 Percentile:63.98(Chemistry, Multidisciplinary)New methodology for a simultaneous isotope speciation of various Pu isotopes without complicated isobaric interferences is developed by using inductively coupled plasma-mass spectrometry (ICP-MS). In analyzing ICP tandem MS (ICP-MS/MS), CO gas reactions in a dynamic reaction cell (DRC) almost eliminated the background noise intensity produced by isobaric interference from isotopes originating from actinides such as Am, Cm, and U at the locations (m/z) of significant Pu isotopes (Pu, Pu, Pu, Pu, Pu).
Ohshima, Hiroyuki; Morishita, Masaki*; Aizawa, Kosuke; Ando, Masanori; Ashida, Takashi; Chikazawa, Yoshitaka; Doda, Norihiro; Enuma, Yasuhiro; Ezure, Toshiki; Fukano, Yoshitaka; et al.
Sodium-cooled Fast Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.3, 631 Pages, 2022/07
This book is a collection of the past experience of design, construction, and operation of two reactors, the latest knowledge and technology for SFR designs, and the future prospects of SFR development in Japan. It is intended to provide the perspective and the relevant knowledge to enable readers to become more familiar with SFR technology.
Abe, Yuta; Otaka, Masahiko; Okazaki, Kodai*; Kawakami, Tomohiko*; Nakagiri, Toshio
Proceedings of 2019 International Congress on Advances in Nuclear Power Plants (ICAPP 2019) (Internet), 7 Pages, 2019/05
Since the hardness of fuel debris containing boride from BC pellet in control rod is estimated to be two times higher as that of oxide, such as UO and ZrO, it is necessary to select the efficient and appropriate operation for removal of fuel debris formed in the severe accident of nuclear power plants. We focused on the characteristics of LIBS, an innovative rapid chemical in-situ analysis technology that enables simultaneous detection of B, O, and other metal elements in fuel debris. Simulated solidified melt specimens were obtained in the plasma heating tests (CMMR-0/-2, performed by JAEA) of simulated fuel assembly (ZrO is used to simulated UO pellet, other materials such as stainless steel, BC are same as fuel assembly). The LIBS signals of (B/O)/Zr ratio showed good linear relationship with Vickers hardness. This technique can be also applied as in-situ assessment tool for elemental composition and Vickers hardness of metal-oxide-boride materials.
Kawakami, Tomohiko*; Nakano, Natsuko*; Takagi, Kazunari*; Spaziani, F.*; Hanamoto, Yukio*; Abe, Yuta
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Kawakami, Tomohiko*; Abe, Yuta; Spaziani, F.*; Nakano, Natsuko*; Nakagiri, Toshio
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Kawakami, Tomohiko*; Abe, Yuta; Spaziani, F.*; Nakano, Natsuko*; Nakagiri, Toshio
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Abe, Yuta; Nakagiri, Toshio; Yamashita, Takuya; Noro, Junji*; Matsushima, Tomohiro*; Kawakami, Tomohiko*
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Okazaki, Kodai*; Abe, Yuta; Spaziani, F.*; Nakano, Natsuko*; Kawakami, Tomohiko*
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Abe, Yuta; Yamashita, Takuya; Kawakami, Tomohiko*
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Okazaki, Kodai*; Kawakami, Tomohiko*; Abe, Yuta; Otaka, Masahiko
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Okazaki, Kodai*; Kawakami, Tomohiko*; Abe, Yuta; Otaka, Masahiko; Sato, Ikken
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Seki, Misaki; Ishikawa, Koji*; Nagata, Hiroshi; Otsuka, Kaoru; Omori, Takazumi; Suzuki, Yumi*; Tanaka, Atsushi*; Kawakami, Tomohiko*; Ide, Hiroshi; Tsuchiya, Kunihiko
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Abe, Yuta; Otaka, Masahiko; Okazaki, Kodai*; Kawakami, Tomohiko*; Oishi, Yuji*
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no abstracts in English
Okazaki, Kodai*; Kawakami, Tomohiko*; Abe, Yuta; Otaka, Masahiko; Oishi, Yuji*
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Makuuchi, Etsuyo*; Nagayama, Sakiko*; Abe, Yuta; Okazaki, Kodai*; Kawakami, Tomohiko*; Oishi, Yuji*; Otaka, Masahiko
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no abstracts in English
Okazaki, Kodai*; Kawakami, Tomohiko*; Nagayama, Sakiko*; Abe, Yuta; Otaka, Masahiko; Makuuchi, Etsuyo*; Oishi, Yuji*; Takagai, Yoshitaka*
no journal, ,
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Abe, Yuta; Makuuchi, Etsuyo*; Nagayama, Sakiko*; Okazaki, Kodai*; Kawakami, Tomohiko*; Sun, Y.*; Oishi, Yuji*; Otaka, Masahiko
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Nagayama, Sakiko*; Okazaki, Kodai*; Kawakami, Tomohiko*; Abe, Yuta; Makuuchi, Etsuyo*; Otaka, Masahiko
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no abstracts in English
Matsueda, Makoto; Kawakami, Tomohiko*; Koarai, Kazuma; Terashima, Motoki; Fujiwara, Kenso; Iijima, Kazuki; Furukawa, Makoto*; Takagai, Yoshitaka*
no journal, ,
Inductively coupled plasma tandem mass spectrometry with CO gas reactions in a dynamic reaction cell almost eliminated the background noise intensity produced by isobaric interference from isotopes originating from actinides such as Am, Cm, and U at the locations (m/z) of significant Pu isotopes (Pu, Pu, Pu, Pu, and Pu).
Okazaki, Kodai*; Kawakami, Tomohiko*; Nagayama, Sakiko*; Abe, Yuta; Makuuchi, Etsuyo*; Otaka, Masahiko; Oishi, Yuji*
no journal, ,
no abstracts in English