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Journal Articles

Preparation of an extractant-impregnated porous membrane for the high-speed separation of a metal ion

Asai, Shiho; Watanabe, Kazuo; Sugo, Takanobu*; Saito, Kyoichi*

Journal of Chromatography A, 1094(1-2), p.158 - 164, 2005/11

 Times Cited Count:23 Percentile:55.54(Biochemical Research Methods)

The analysis of radioactive species in radioactive wastes is essential to the safe and economical disposal of such wastes. Among radioactive species, alpha- and beta-emitting nuclides should be purified prior to various radiometric determinations. To overcome the disadvantages of the conventional separation techniques, we have proposed functional porous hollow-fiber membranes that achieve a high speed operation assisted by convective flow. Stable immobilization in aqueous media is ensured by the hydrophobic interaction between the hydrophobic moiety of the extractant and octadecyl part of octadecylamino group. In this study, HDEHP, which shows the selectivity for rare earth elements, such as yttrium, was immobilized onto the porous membrane. The amount of immobilized HDEHP increased with increasing molar conversion. This can be explained by the fact that an increase in the C$$_{18}$$NH group allows the polymer brush to extend itself due to electrostatic repulsion originating from the amino part of the C$$_{18}$$NH group.

Journal Articles

Status of activities on the lithium target in the key element technology phase in IFMIF

Nakamura, Hiroo; Burgazzi, L.*; Cevolani, S.*; Dell'Ocro, G.*; Fazio, C.*; Giusti, D.*; Horiike, Hiroshi*; Ida, Mizuho*; Kakui, Hideo*; Loginov, N.*; et al.

Journal of Nuclear Materials, 307-311(Part.2), p.1675 - 1679, 2002/12

 Times Cited Count:4 Percentile:29.29(Materials Science, Multidisciplinary)

This paper describes the latest design of the IFMIF liquid Li target system reflecting the KEP results. Future prospects will be also summarized. To handle an averaged heat flux of 1 GW/m2 under a continuous 10 MW D beam deposition, a high-speed Li flow of 20 m/s, a double reducer nozzle and a concaved flow are applied to the target design. Hydraulic characteristics of the Li target design have been validated in a water jet experiment. To obtain a control scenario of the Li loop in an accident of the D beam trip, a transient analysis has been done. To control tritium and impurities in Li, a cold trap and two kinds of hot trap are adopted in Li purification loop. To maintain reliable continuous operation, various diagnostics are attached to the target assembly. To exchange the target assembly and back wall, a remote handling system with a multi axis arm and welding/cutting tool are designed. As an option, design of a replaceable back wall with a mechanical seal is being in progress. In a next phase of IFMIF beyond 2004, a Li test loop will be constructed for engineering validation.

Journal Articles

Fabrication of americium-based nitrides by carbothermic reduction method

Ito, Akinori; Akabori, Mitsuo; Takano, Masahide; Ogawa, Toru; Numata, Masami; Itonaga, Fumio

Journal of Nuclear Science and Technology, 39(Suppl.3), p.737 - 740, 2002/11

no abstracts in English

Journal Articles

Extraction behavior of yttrium with diisodecylphosphoric acid from nitric acid solution

Sato, Tadashi

Journal of Radioanalytical and Nuclear Chemistry, 158(2), p.391 - 399, 1992/00

 Times Cited Count:5 Percentile:48.19(Chemistry, Analytical)

no abstracts in English

Journal Articles

XPS observations of yttrium surface bombarded with energetic hydrogen-ions

;

Journal of Nuclear Materials, 138, p.149 - 151, 1986/00

 Times Cited Count:1 Percentile:56.32(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Application of X-ray-induced Auger electron spectroscopy to state analyses of hydrogen implanted in Y,Zr and Nb metals

;

Surface and Interface Analysis, 6(4), p.171 - 173, 1984/00

 Times Cited Count:35 Percentile:77.02(Chemistry, Physical)

no abstracts in English

Journal Articles

Thermal coductivity of(Pu$$_{1}$$$$_{-}$$$$_{x}$$,Nd$$_{x}$$)O$$_{2}$$$$_{-}$$$$_{y}$$ and(Pu$$_{1}$$$$_{-}$$$$_{x}$$,Y$$_{x}$$)O$$_{2}$$$$_{-}$$$$_{y}$$ solid solutions

; ; ;

Journal of Nuclear Materials, 115, p.118 - 127, 1983/00

 Times Cited Count:15 Percentile:81.72(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Thermal conductivity of stoichiometric (Pu,Nd)O$$_{2}$$ and (Pu,Y)O$$_{2}$$ solid solutions

; ; ;

Journal of Nuclear Materials, 114, p.260 - 266, 1983/00

 Times Cited Count:17 Percentile:84.19(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Stoichiometry of fully oxidized PuO$$_{2}$$-NdO$$_{1}$$$$_{.}$$$$_{5}$$ and PuO$$_{2}$$-YO$$_{1}$$$$_{.}$$$$_{5}$$ solid solutions

; ; ;

Journal of Nuclear Science and Technology, 19(8), p.681 - 683, 1982/00

 Times Cited Count:2 Percentile:43.95(Nuclear Science & Technology)

no abstracts in English

Journal Articles

The Effect of yttrium content on the thermal conductivity of near-stoichiometric(U,Y)O$$_{2}$$ solid solutions

; ; ;

Journal of Nuclear Materials, 102, p.30 - 39, 1981/00

 Times Cited Count:43 Percentile:96.43(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Effect of pre-treatment of polyethylene surface on adsorption of carrier-free $$^{9}$$$$^{0}$$Y

Radiochem.Radioanal.Lett., 27(1), p.21 - 25, 1976/01

no abstracts in English

Journal Articles

New radioactivity 43-min Yttrium-84

; Toshimitsu Yamazaki*; Hajime Ohnuma*; Yoshio Hashimoto*; Manabu Fujioka*

Journal of the Physical Society of Japan, 17(8), p.1223 - 1229, 1962/00

 Times Cited Count:6

no abstracts in English

13 (Records 1-13 displayed on this page)
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