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JAEA Reports

Development of technology for rapid analysis of strontium-90 with low isotopic abundance using laser resonance ionization (Contract research); FY2019 Nuclear Energy Science & Technology and Human Resource Development Project

Collaborative Laboratories for Advanced Decommissioning Science; The University of Tokyo*

JAEA-Review 2020-024, 75 Pages, 2021/01

JAEA-Review-2020-024.pdf:5.43MB

The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2019. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2018, this report summarizes the research results of the "Development of Technology for Rapid Analysis of Strontium-90 with Low Isotopic Abundance using Laser Resonance Ionization" conducted in FY2019. In this study, we will develop a rapid analysis technique for strontium-90 using diode laser-based resonance ionization with elemental and isotopic selectivity. Strontium-90 is one of the major difficult-to-measure nuclides released into the environment due to the accident at TEPCO's Fukushima Daiichi Nuclear Power Station. Our method is particularly intended for real samples which contain high concentrations of strontium stable isotopes such as marine samples.

JAEA Reports

Development of technology for rapid analysis of strontium-90 with low isotopic abundance using laser resonance ionization (Contract research); FY2018 Center of World Intelligence Project for Nuclear Science/Technology and Human Resource Development

Collaborative Laboratories for Advanced Decommissioning Science; The University of Tokyo*

JAEA-Review 2019-027, 70 Pages, 2020/01

JAEA-Review-2019-027.pdf:5.18MB

JAEA/CLADS, had been conducting the Center of World Intelligence Project for Nuclear Science/Technology and Human Resource Development (hereafter referred to "the Project") in FY2018. The Project aims to contribute to solving problems in nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2018, this report summarizes the research results of the "Development of Technology for Rapid Analysis of Strontium-90 with Low Isotopic Abundance Using Laser Resonance Ionization". In this study, we will develop a rapid analysis technique for strontium-90 using diode laser-based resonance ionization with elemental and isotopic selectivity. Strontium-90 is one of the major difficult-to-measure nuclides released into the environment due to the accident at Tokyo Electric Power Company (TEPCO)'s Fukushima Daiichi Nuclear Power Station. Our method is particularly intended for real samples which contain high concentrations of strontium stable isotopes such as marine samples.

Journal Articles

Application of phosphate modified CAC for incorporation of simulated secondary aqueous wastes in Fukushima Daiichi NPP, 1; Characterization of solidified cementitious systems with reduced water content

Garcia-Lodeiro, I.*; Lebon, R.*; Machoney, D.*; Zhang, B.*; Irisawa, Keita; Taniguchi, Takumi; Namiki, Masahiro*; Osugi, Takeshi; Meguro, Yoshihiro; Kinoshita, Hajime*

Proceedings of 3rd International Symposium on Cement-based Materials for Nuclear Wastes (NUWCEM 2018) (USB Flash Drive), 4 Pages, 2018/11

Journal Articles

Chemical states of trace-level strontium adsorbed on layered oxide by XPS and XANES under total reflection condition

Baba, Yuji; Shimoyama, Iwao

Photon Factory Activity Report 2016, 2 Pages, 2017/00

In order to elucidate the adsorption states of radioactive Sr-90 in soil, chemical bonding states of non-radioactive strontium adsorbed on layered oxide (mica) have been investigated by X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES) spectroscopy. Since the number of atoms in radioactive Sr-90 is extremely small, the XPS and XANES were measured under total reflection condition of the incident X-rays. The detection limit in total reflection XPS was about 150 pg/cm$$^{2}$$, which corresponds to 300 Bq of Sr-90. The Sr 2p$$_{3/2}$$ core-level energy in XPS shifted to lower energy with the decrease in the thickness of Sr layer. Also, the Sr 2p$$_{3/2}$$ $$rightarrow$$ Sr 4d$$^{*}$$ resonance energy in XANES shifts to lower energy with the decrease in the thickness. On the basis of a simple point charge model, it was elucidated that the chemical bond between Sr and mica surface becomes ionic with the decrease in the adsorbed amount of strontium.

Journal Articles

Environmental measurement using plastic scintillation fiber after the accident at the Fukushima Daiichi Nuclear Power Plant

Sanada, Yukihisa

Kogaku, 45(8), p.300 - 305, 2016/08

For the purpose of environmental radiation measurement, decontamination effect and detection of leakage of radionuclide plastic scintillation fiber (PSF) had been used for the wide area as technique to measure radiation distribution quickly after the Fukushima Daiichi Nuclear Power Plant accident that occurred in March, 2011. The PSF can easily measure radiation distribution due to position sensing of radiation source. The PSF was used for the measurement before and after the decontamination by considering features that PSF obtained many point data at one time. The PSF was used for the measurement of radiocesium concentration in sediment of irrigation pond by considering features that PSF has high water resistance. This paper described the principle of PSF and the application example after the accident at the Fukushima Daiichi Nuclear Power Plant.

JAEA Reports

Separation and immobilization of Sr and Cs contained in acidic media by using inorganic ion-exchangers (literature survey)

Yamagishi, Isao

JAERI-Review 2001-027, 52 Pages, 2001/07

JAERI-Review-2001-027.pdf:3.59MB

The present study deals with the survey of inorganic ion-exchangers suitable for separation and immobilization of Sr and Cs contained in acidic high-level liquid waste. For separation and immobilization of Cs, crystalline silicotitanate seems to be the most promising exchanger. For selective separation of Sr, there is no promising exchanger up to now. Sintered ceramics are favorable waste forms of inorganic ion-exchangers. Their stabilities are largely influenced by composition of exchangers, qualities of ceramics and disposal scenario.

JAEA Reports

Removal of radionuclides from partitioning waste solutions by adsorption and catalytic oxidation methods

Yamagishi, Isao; Yamaguchi, Isoo; Kubota, Masumitsu*

JAERI-Research 2000-038, 40 Pages, 2000/09

JAERI-Research-2000-038.pdf:1.33MB

no abstracts in English

Journal Articles

Measurement of the thermal neutron cross section of the $$^{90}$$Sr(n,$$gamma$$)$$^{91}$$Sr reaction

Harada, Hideo*; Sekine, Toshiaki; ; ; Kobayashi, Katsutoshi; Otsuki, Tsutomu*; Kato, Toshio*

Journal of Nuclear Science and Technology, 31(3), p.173 - 179, 1994/03

 Times Cited Count:23 Percentile:13.25(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Measurement of diffusion and sorption of radionuclides in rocks

; ; *;

Journal of Nuclear Science and Technology, 22(10), p.833 - 840, 1985/00

 Times Cited Count:3 Percentile:52.06(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Reinvestigation of pressure-induced III-III transitions in ferroelectric Ca$$_{2}$$Sr(C$$_{2}$$H$$_{5}$$COO)$$_{6}$$ and Ca$$_{2}$$Pb(C$$_{2}$$H$$_{5}$$COO)$$_{6}$$

Journal of the Physical Society of Japan, 53(5), p.1602 - 1605, 1984/00

 Times Cited Count:9 Percentile:29.03(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Radiochemical analysis of strontium-90 and gross alpha activity in radioactive eiquid waste

Kyoto Daigaku Genshiro Jikkenjo Hoshasei Haikibutsu Kanri Semmon Kenkyukai Hokokusho, p.20 - 25, 1981/00

no abstracts in English

Journal Articles

Effect of hydrostatic pressure on the phase transitions in ferroelectric Ca$$_{2}$$Sr(C$$_{2}$$H$$_{5}$$COO)$$_{6}$$ and Ca$$_{2}$$Pb(C$$_{2}$$H$$_{5}$$COO)$$_{6}$$

; Ozawa, K.

Journal of the Physical Society of Japan, 39(4), p.1026 - 1031, 1975/04

 Times Cited Count:37

no abstracts in English

Journal Articles

Critical points of the II-III transitions in Ca$$_{2}$$Pb(C$$_{2}$$H$$_{5}$$COO)$$_{6}$$ and Ca$$_{2}$$Sr(C$$_{2}$$H$$_{5}$$COO)$$_{6}$$

; Ozawa, K.

Phys.Lett.,A, 49(4), p.283 - 284, 1974/04

no abstracts in English

Journal Articles

Effect of hydrostatic pressure on the ferroelectric phase transition in CaSr(CH$$_{3}$$CH$$_{2}$$COO)$$_{6}$$

; Ozawa, K.

Japanese Journal of Applied Physics, 12(8), p.1287 - 1288, 1973/08

 Times Cited Count:5

no abstracts in English

Journal Articles

Uranium-oxygen Lattice Vibrations of Lithium, $$beta$$-sodium and $$beta$$-strontium Uranates

Journal of Inorganic and Nuclear Chemistry, 32, p.1209 - 1218, 1970/00

 Times Cited Count:17

no abstracts in English

Journal Articles

Variation of strontium-calcium observed ratio(urine/diet)in man

; ;

Health Physics, 16(4), p.441 - 447, 1969/00

 Times Cited Count:1

no abstracts in English

Journal Articles

Estimation of dietary intake of strontium-90 from excreta analysis

Journal of Nuclear Science and Technology, 1(7), p.255 - 263, 1964/00

no abstracts in English

28 (Records 1-20 displayed on this page)