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Arai, Yoichi; Watanabe, So; Hasegawa, Kenta; Okamura, Nobuo; Watanabe, Masayuki; Takeda, Keisuke*; Fukumoto, Hiroki*; Ago, Tomohiro*; Hagura, Naoto*; Tsukahara, Takehiko*
Nuclear Instruments and Methods in Physics Research B, 542, p.206 - 213, 2023/09
Times Cited Count：0 Percentile：0.02(Instruments & Instrumentation)Takahatake, Yoko; Watanabe, So; Arai, Tsuyoshi*; Sato, Takahiro*; Shibata, Atsuhiro
Applied Radiation and Isotopes, 196, p.110783_1 - 110783_5, 2023/06
Times Cited Count：0 Percentile：0.01(Chemistry, Inorganic & Nuclear)Suzuki, Kenji*; Miura, Yasufumi*; Shiro, Ayumi*; Toyokawa, Hidenori*; Saji, Choji*; Shobu, Takahisa; Morooka, Satoshi
Zairyo, 72(4), p.316 - 323, 2023/04
-ray spectrometer and its performance under intense 
Cs and 
Co radiation fieldsKaburagi, Masaaki; Shimazoe, Kenji*; Kato, Masahiro*; Kurosawa, Tadahiro*; Kamada, Kei*; Kim, K. J.*; Yoshino, Masao*; Shoji, Yasuhiro*; Yoshikawa, Akira*; Takahashi, Hiroyuki*
Nuclear Instruments and Methods in Physics Research A, 1010, p.165544_1 - 165544_9, 2021/09
Times Cited Count：0 Percentile：0.02(Instruments & Instrumentation)The number of nuclear facilities being decommissioned has been increasing worldwide, in particular following the accident of the Tokyo Electric Power Company Holdings' Fukushima Daiichi Nuclear Power Station in 2011. In these nuclear facilities, proper management of radioactive materials is required. Then, A -ray spectrometer with four segmentations using small volume CeBr
scintillators with a dimension of 
was developed. The four scintillators were coupled to a multi-anode photomultiplier tube specific to intense radiation fields. We performed the -ray exposure study under Cs and Co radiation fields. Under the Cs radiation field, the relative energy resolution at 1375 mSv/h was the relative energy resolution at 1375 mSv/h was 9.2
0.05%, 8.00.08%, 8.0
0.03%, and 9.00.04% for the four channels, respectively.
Arai, Yoichi; Watanabe, So; Ono, Shimpei; Nomura, Kazunori; Nakamura, Fumiya*; Arai, Tsuyoshi*; Seko, Noriaki*; Hoshina, Hiroyuki*; Hagura, Naoto*; Kubota, Toshio*
Nuclear Instruments and Methods in Physics Research B, 477, p.54 - 59, 2020/08
Times Cited Count：5 Percentile：45.45(Instruments & Instrumentation)Arai, Yoichi; Watanabe, So; Ono, Shimpei; Nomura, Kazunori; Nakamura, Fumiya*; Arai, Tsuyoshi*; Seko, Noriaki*; Hoshina, Hiroyuki*; Kubota, Toshio*
QST-M-23; QST Takasaki Annual Report 2018, P. 59, 2020/03
Abe, Tomohisa; Shimazaki, Takejiro; Osugi, Takeshi; Nakazawa, Osamu; Yamada, Naoto*; Yuri, Yosuke*; Sato, Takahiro*
QST-M-16; QST Takasaki Annual Report 2017, P. 140, 2019/03
no abstracts in English
Abe, Tomohisa; Shimazaki, Takejiro; Osugi, Takeshi; Yamada, Naoto*; Yuri, Yosuke*; Sato, Takahiro*
QST-M-8; QST Takasaki Annual Report 2016, P. 61, 2018/03
no abstracts in English
Takahatake, Yoko; Watanabe, So; Kofuji, Hirohide; Takeuchi, Masayuki; Nomura, Kazunori; Sato, Takahiro*
International Journal of PIXE, 26(3&4), p.73 - 83, 2017/09
JAEA has been conducting research and development of MA(III) recovery from HLLW by extraction chromatography technology for reduction in amount and environmental impact of radioactive waste. The behavior of adsorbed cations inside the adsorbent packed in a column is necessary to be evaluated for improvement of the adsorbent or flow-sheet to achieve targeted MA(III) recovery performance. In this paper, micro-PIXE analysis was carried out on the particles sampled from various positions of the column to reveal the behavior of cations inside the packed column with CMPO/SiO 
-P adsorbent. Simple experiment and data analysis were shown to be effective to reveal inside of the column, and formation and transportation of the adsorption bands were observed for some cations which are extractable by the CMPO extractant. Some part of Zr(IV) and Mo(VI) were found to remain inside the column without distinct transportation even after the elution operation.
Watanabe, So; Sano, Yuichi; Shiwaku, Hideaki; Yaita, Tsuyoshi; Ono, Shimpei*; Arai, Tsuyoshi*; Matsuura, Haruaki*; Koka, Masashi*; Sato, Takahiro*
Nuclear Instruments and Methods in Physics Research B, 404, p.202 - 206, 2017/08
Times Cited Count：3 Percentile：28.82(Instruments & Instrumentation)Abe, Ryoji*; Nagoshi, Kohei*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi; Matsuura, Haruaki*; Takagi, Hideaki*; Shimizu, Nobutaka*; Koka, Masashi*; Sato, Takahiro*
Nuclear Instruments and Methods in Physics Research B, 404, p.173 - 178, 2017/08
Times Cited Count：5 Percentile：44.54(Instruments & Instrumentation)Sato, Takahiro; Yokoyama, Akihito; Kitamura, Akane; Okubo, Takeru; Ishii, Yasuyuki; Takahatake, Yoko; Watanabe, So; Koma, Yoshikazu; Kada, Wataru*
Nuclear Instruments and Methods in Physics Research B, 371, p.419 - 423, 2016/03
Times Cited Count：7 Percentile：55.03(Instruments & Instrumentation)Sato, Takahiro; Sakai, Takuro; Oikawa, Masakazu*
Nuclear Instruments and Methods in Physics Research B, 249(1-2), p.234 - 237, 2006/08
Times Cited Count：7 Percentile：47.51(Instruments & Instrumentation)The purpose of this study is to correct yields of characteristic X-ray in micro-PIXE analysis by using STIM and computer simulation. To compensate the reduction of X-ray yields, thickness and internal constitution of a sample must be taken accurately with spatial resolution of a few microns. Therefore, we use STIM to investigate them. Furthermore, we developed a computer software code to correct the X-ray yields. To confirm validity of our method, ion exchange resins, which are similar to biological cells in size, were used as a test sample. There were some wrong distributions of sodium in micro-PIXE analysis of ion exchange resins. But, they could be corrected to some extent by using our code.
Kuroda, Shinji*; Marcet, S.*; Bellet-Amalric, E.*; Cibert, J.*; Mariette, H.*; Yamamoto, Shunya; Sakai, Takuro; Oshima, Takeshi; Ito, Hisayoshi
Physica Status Solidi (A), 203(7), p.1724 - 1728, 2006/05
Times Cited Count：6 Percentile：31.23(Materials Science, Multidisciplinary)no abstracts in English
Sato, Takahiro; Sakai, Takuro; Oikawa, Masakazu*
JAEA-Review 2005-001, TIARA Annual Report 2004, p.304 - 306, 2006/01
The purpose of this study is to correct yields of characteristic X-ray in micro-PIXE analysis by using STIM and computer simulation. To compensate the reduction of X-ray yields, thickness of a sample must be taken accurately with spatial resolution of a few microns but it is difficult to measure them by micro-PIXE analysis. Therefore, we use STIM to investigate them. Furthermore, we developed a computer simulation code to correct the X-ray yields. To confirm validity of our code, ion exchange resins, which are similar to biological cells in size, were used as a test sample. There were some wrong distributions of sodium in micro-PIXE analysis of ion exchange resins. But, they could be corrected to some extent by using our code.
Kasahara, Mikio*; Ma, C.-J.*; Okumura, Motonori*; Kojima, Takuji; Hakoda, Teruyuki; Taguchi, Mitsumasa; Sakai, Takuro; Ohara, Yoshihiro
JAEA-Review 2005-001, TIARA Annual Report 2004, p.293 - 295, 2006/01
Artificial cloud generation experiment was performed using a huge vertical pit located in Kamaishi iron-copper mine to investigate the characteristics of cloud. The physical and chemical properties of individual cloud droplets were examined by microscopic analysis at Kyoto university and micro-PIXE analysis at TIARA. The process of growth of cloud was clarified based on the result on droplet size, its distribution, droplet number concentration, and the change in distribution of chlorine in droplet as the function of size.
Sato, Takahiro; Sakai, Takuro; Oikawa, Masakazu*
JAEA-Review 2005-001, TIARA Annual Report 2004, p.304 - 306, 2006/01
The purpose of this study is to correct yields of characteristic X-ray in micro-PIXE analysis by using STIM and computer simulation. To compensate the reduction of X-ray yields, thickness of a sample must be taken accurately with spatial resolution of a few microns but it is difficult to measure them by micro-PIXE analysis. Therefore, we use STIM to investigate them. Furthermore, we developed a computer simulation code to correct the X-ray yields. To confirm validity of our code, ion exchange resins, which are similar to biological cells in size, were used as a test sample. There were some wrong distributions of sodium in micro-PIXE analysis of ion exchange resins. But, they could be corrected to some extent by using our code.
Arakawa, Kazuo
Hoshasen Kagaku, (80), p.57 - 59, 2005/09
no abstracts in English
Kozai, Naofumi; Mitamura, Hisayoshi; Onuki, Toshihiko; Sakai, Takuro; Sato, Takahiro; Oikawa, Masakazu*
Nuclear Instruments and Methods in Physics Research B, 231(1-4), p.530 - 535, 2005/04
Times Cited Count：9 Percentile：55.97(Instruments & Instrumentation)Applicability of micro-PIXE analysis to quantitative evaluation of heavy elements sorbed on minerals was investigated to get better understanding of sorption and distribution of heavy elements onto mixture of minerals in soil. For this, external standards, that is, heavy element-sorbing minerals of uniform shape and size, were analyzed by micro-PIXE. It was found that such external standards were available to quantitative evaluation by micro-PIXE though their applicability may be limited.
Onuki, Toshihiko; Sakamoto, Fuminori; Kozai, Naofumi; Ozaki, Takuo; Yoshida, Takahiro; Narumi, Issei; Wakai, Eiichi; Sakai, Takuro; Francis, A. J.*
Chemical Geology, 212(3-4), p.279 - 290, 2004/12
Times Cited Count：17 Percentile：34.28(Geochemistry & Geophysics)no abstracts in English
