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Tsukada, Kazuaki; Sato, Nozomi; Watanabe, Satoshi; Ishioka, Noriko; Hatsukawa, Yuichi; Hashimoto, Kazuyuki; Kin, Tadahiro*; Kawabata, Masako; Saeki, Hideya; Nagai, Yasuki
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-ray analysis with time-of-flight methodToh, Yosuke
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Yasuda, Kenichiro; Suzuki, Daisuke; Kanazawa, Kazuhito; Miyamoto, Yutaka; Esaka, Fumitaka; Magara, Masaaki
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In order to detect of undeclared activities in nuclear facilities, we develop to technique of safeguards environmental sample analysis in JAEA. As part of this effort, isotope ratio analysis of individual MOX particle was performed using by TIMS without chemical treatment. It is possible to estimate an age determination of plutonium purification by a combination of the plutonium isotope ratios and (Pu-238+Am-241)/(Pu-239+Pu-240) alpha activity ratios were obtained by the alpha spectrometry. Since the plutonium particle size is more than 1
m due to the influence of self-absorption, exactly measurement of the activity ratios has been difficult. Therefore, we were examining how to acid dissolution in the plutonium particles on the TIMS filament before alpha spectrometry.
-ray analysis at J-PARC/MLF/ANNRIKimura, Atsushi
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Miyamoto, Yutaka; Yasuda, Kenichiro; Magara, Masaaki
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The authors accomplished the development of technique for sequential separation of U, Th, Pb, and the lanthanides using a single anion-exchange column and mixed media consisting of hydrochloric acid, nitric acid, acetic acid, and hydrofluoric acid in the previous work. Composition of eluents for separation of Pu and Th was optimized to accomplish the sequential separation of multi-elements including Pu. The mixture of Pu and Th was successfully separated by a single anion exchange column with acetic acid-HCl-HF mixed-media.
Ishii, Yasuo; Sasaki, Yoshito; Kikuchi, Naoyuki; Watanabe, Takayoshi; Oda, Yoshihiro; Niizato, Tadafumi
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As part of "Long-Term Assessment of Transport of Radioactive Contaminant in the Environment of Fukushima" (F-TRACE project), JAEA have researched to expect the transportation of radioactive caesium from contaminated mountain forests to estuary and coast through dam, pond, river etc. based on survey data in Fukushima prefecture, and to implement technical information and remedial measures to prevent contamination of decontaminated areas and domestic water supply. In the forest area, it is considered that radioactive caesium existed in the tree canopies move to the surface of the ground through litter fall, through fall and stem flow. In this study, we report properties and distribution of radioactive caesium of the surface soils at stem base of Japanese cedar in the Ogi district of Kawauchi-mura to know the influence of the stem flow on soil.
Koma, Yoshikazu
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Due to the accident of Fukushima Daiichi NPS, TEPCO, wide area was contaminated. TEPCO analyzed radioactivity in the soil within the NPS site and reported their concentration in 2011. Based on the data disclosed, transport behavior from the fuel of damaged reactors to the soil for the detected radionuclides was investigated.
Zr in the contaminated water generated at the Fukushima Daiichi Nuclear Power StationShimada, Asako; Kameo, Yutaka
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Lu with bifunctional chelators in the presence of competing metalsWatanabe, Satoshi; Hashimoto, Kazuyuki; Ishioka, Noriko
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= 102)Sato, Tetsuya; Asai, Masato; Kaneya, Yusuke; Tsukada, Kazuaki; Toyoshima, Atsushi; Vascon, A.; Takeda, Shinsaku; Mitsukai, Akina*; Nagame, Yuichiro; Ichikawa, Shinichi; et al.
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In order to determine the IP of the heavy elements, we have developed a novel measurement method based on a surface ionization technique by using a surface ionization ion source coupled to a He/CdI
gas-jet transport system for an Isotope Separator On-Line (ISOL) at the JAEA tandem accelerator facility. In this work, we have determined IP value of No by using the method. In a surface ionization process, an ionization efficiency of an atom depends on its IP. To obtain a relationship between IP and ionization efficiency in present system, we measured ionization efficiencies of various short-lived isotopes. Ionization efficiency of 
No produced in the 
Cm(
C, 4n) reaction was also measured. Measured ionization efficiency of No was 0.8%, which yields IP value of No to be 6.6 eV. This value is in a good agreement with the value which has been evaluated by extrapolation from those of the lighter actinide elements, 6.65 eV.
Kitatsuji, Yoshihiro; Otobe, Haruyoshi; Watanabe, Masayuki; Kimura, Takaumi
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Cu for cancer therapy using fast neutrons from 
C(d,n) reactionHashimoto, Kazuyuki; Kawabata, Masako; Saeki, Hideya; Tsukada, Kazuaki; Sato, Nozomi*; Motoishi, Shoji*; Nagai, Yasuki; Watanabe, Satoshi; Ishioka, Noriko
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Copper-67 is an attractive radionuclide for cancer therapy, because of emissions of medium energy 
particle (a mean energy of 141 keV) and rays (91, 93, 185 keV) suitable for imaging, and its appropriate half-life (62 hours). However, the use of Cu for clinical researches has been limited due to the difficulty in obtaining sufficient quantities. In this study, we have investigated the production of Cu by the 
Zn(n,x)Cu reaction (x = n'p, d) using fast neutrons from C(d,n) reaction. The highly purified Cu was obtained by the two columns separation method (chelate resin chelex-100 and anion exchange resin AG1-X8). Furthermore, the labelling of DOTA and TETA which are useful bifunctional ligands for the labelling monoclonal antibodies was succeeded in more than 97% yield.
Inoue, Kazumi; Fujita, Hiroki; Hatsukawa, Yuichi
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I in field soil around Tokai Reprocessing PlantNagaoka, Mika; Yokoyama, Hiroya; Fujita, Hiroki
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Watanabe, Shigeki; Balkin, E. R.*; Hamlin, D. K.*; Gagnon, K.*; Chyan, M.-K.*; Wilbur, D. S.*
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Li + 
W reactionTamura, Nobuyuki; Hirose, Kentaro; Nishio, Katsuhisa; Nishinaka, Ichiro; Makii, Hiroyuki; Orlandi, R.; L
guillon, R.; Smallcombe, J.; Andreyev, A. N.; Otsuki, Tsutomu*; et al.
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Tamura, Nobuyuki; Nishio, Katsuhisa; Hirose, Kentaro; Nishinaka, Ichiro; Makii, Hiroyuki; Kimura, Atsushi; Ota, Shuya*; Andreyev, A. N.; Vermeulen, M.*; Gillespire, S.*; et al.
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Asai, Masato; Sato, Tetsuya; Kaneya, Yusuke
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To experimentally determine the first ionization energy of element 103, Lr, we have newly developed a surface ionization method and have investigated its feasibility. We have measured surface ionization efficiencies of various lanthanide elements as a function of the first ionization energy, and investigated whether the surface ionization efficiencies can be reproduced by the Saha-Langmuir equation which is the equation to describe the surface ionization process. We have found that the effect of excited states in atom and ion largely contributes to the surface ionization efficiency in the Saha-Langmuir equation. By taking account of this effect, we have reproduced the measured ionization efficiencies of all the lanthanide elements with good accuracies.
Vascon, A.; Wiehl, N.*; Runke, J.*; Drebert, J.*; Reich, T.*; Trautmann, N.*; Cremer, B.*; K
gler, T.*; Beyer, R.*; Junghans, A. R.*; et al.
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Y with fast neutrons by the Be(p,n) reactionTakeda, Shinsaku; Tsukada, Kazuaki; Sato, Tetsuya; Asai, Masato; Nagai, Yasuki; Sakama, Minoru*
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no abstracts in English