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Journal Articles

Measurement of the neutron capture cross section of $^{185}$ Re in the keV energy region

Katabuchi, Tatsuya*; Sato, Yaoki*; Takebe, Karin*; Igashira, Masayuki*; Umezawa, Seigo*; Fujioka, Ryo*; Saito, Tatsuhiro*; Iwamoto, Nobuyuki

Journal of Nuclear Science and Technology, 6 Pages, 2024/00

https://doi.org/10.1080/00223131.2023.2298749

Times Cited Count：0 Percentile：0.18(Nuclear Science & Technology)

Journal Articles

Improved immobilization of Re(VII) from aqueous solutions bimetallic Ni/Fe $^{0}$ nanoparticles; Implications towards Tc(VII) removal

Maamoun, I.; Tokunaga, Kohei; Dohi, Terumi; Kanno, Futoshi*; Falyouna, O.*; Eljamal, O.*; Tanaka, Kazuya

Frontiers in Nuclear Engineering (Internet), 2, p.1142823_1 - 1142823_17, 2023/03

https://doi.org/10.3389/fnuen.2023.1142823

Recently, the rapid development of nuclear power technologies and the continuous energy demand around the world exhibited massive amounts of contaminated water with radionuclides. Technetium-99 ( $^{99}$ Tc) is one of the long-lived radionuclides with a highly mobile anionic form (Tc(VII)) in aqueous solutions. Hence, the rapid and efficient Tc(VII) removal from radioactive water has emerged as a challenging issue. In this work, bimetallic nickel/iron nanoparticles (Ni/Fe $^{0}$ ) were prepared to enhance the immobilization of rhenium (Re(VII)) from aqueous solutions, as the surrogate of Tc(VII).

Journal Articles

Adsorption mechanism of ReO $_{4}$ $^{-}$ on Ni-Zn layered hydroxide salt and its application to removal of ReO $_{4}$ $^{-}$ as a surrogate of TcO $_{4}$ $^{-}$

Tanaka, Kazuya; Kozai, Naofumi; Yamasaki, Shinya*; Onuki, Toshihiko; Kaplan, D. I.*; Grambow, B.

Applied Clay Science, 182, p.105282_1 - 105282_8, 2019/12

https://doi.org/10.1016/j.clay.2019.105282

Times Cited Count：16 Percentile：67.61(Chemistry, Physical)

In this study, Ni-Zn layered hydroxide salt (LHS) was used for adsorption experiments of ReO $_{4}$ $^{-}$ , as a surrogate of TcO $_{4}$ $^{-}$ , in aqueous solutions with various initial Re and sodium salt concentrations. The maximum adsorption amount of Re was estimated at 127.7 mg/g (6.86 10 $^{-4}$ eq/g) by fitting adsorption isotherm of ReO $_{4}$ $^{-}$ to Langmuir plot. The adsorption of ReO $_{4}$ $^{-}$ at neutral pH was a reversible process by anion exchange, and decreased with increasing Cl $^{-}$ , NO $_{3}$ $^{-}$ and SO $_{4}$ $^{2-}$ in solution. EXAFS analysis indicated that ReO $_{4}$ $^{-}$ was adsorbed as an outer-sphere complex on Ni-Zn LHS. The Ni-Zn LHS is a more robust adsorbent for ReO $_{4}$ $^{-}$ than the Mg-Al LDH in terms of solution pH and tolerance to competing anions, and may be an effective alternative to the traditional and more limited method of removing aqueous TcO $_{4}$ $^{-}$ by reductive precipitation.

Journal Articles

Migration of rhenium and osmium interstitials in tungsten

Suzudo, Tomoaki; Yamaguchi, Masatake; Hasegawa, Akira*

Journal of Nuclear Materials, 467(Part 1), p.418 - 423, 2015/12

AA2015-0099.pdf:0.62MB

https://doi.org/10.1016/j.jnucmat.2015.05.051

Times Cited Count：45 Percentile：96.77(Materials Science, Multidisciplinary)

Tungsten is expected to be a promising plasma-facing material for future fusion devices, but radiation-induced precipitation (RIP), which leads the material to hardening, is a concern at their practical use. One of the keys to accurate prediction of the emergence of RIP is migration of solute atoms, rhenium and osmium, that are produced by nuclear transmutation through irradiation. We conduct a series of numerical simulations using an atomic kinetic Monte Carlo method and investigate the migration of these solute atoms in the form of tungsten-rhenium and tungsten-osmium mixed dumbbells, considered to be the most efficient "carriers" of the solute atoms. We find that the low rotation energy barrier of these mixed dumbbells leading to three-dimensional migration greatly influences their diffusivities. The result also suggests that, although these dumbbells have three-dimensional motion, one cannot simply reduce their migration behavior to that of vacancy-like spherical objects.

Journal Articles

Labeling of bifunctional chelating agent, MAG3, with carrier-free $^{188}$ Re

Hashimoto, Kazuyuki; Wan, K. W. H. B. B.*; Matsuoka, Hiromitsu

Journal of Nuclear and Radiochemical Sciences, 6(3), p.193 - 196, 2005/12

https://doi.org/10.14494/jnrs2000.6.3_193

The radioisotopes of rhenium ( $^{186}$ Re and $^{188}$ Re) are attractive radionuclides for radiotherapy because of their energetic beta particles and gamma rays suitable for imaging. Mercaptoacetyltriglycine, MAG3 (N $_{3}$ S ligand), is a useful bifunctional ligand in labeling monoclonal antibodies with metallic radionuclides. In this study, the labeling of MAG3 with carrier-free $^{188}$ Re from a $^{188}$ W/ $^{188}$ Re generator was investigated in detail. The $^{188}$ Re-MAG3 complex was synthesized by the direct labeling method and by the indirect labeling method using a transfer ligand (citric acid or gluconic acid). The dependence of the labeling yield upon the reaction conditions such as the concentrations of tin(II) chloride dihydrate as a reducing agent, S-benzoyl MAG3 and the transfer ligand, pH, temperature, reaction time and the addition of a carrier was examined. The labeling yield of $^{188}$ Re-MAG3 synthesized by the all method was over 90% under the optimum conditions.

Journal Articles

Development of a Rhenium-186-labeled MAG3-conjugated bisphosphonate for the palliation of metastatic bone pain based on the concept of bifunctional radiopharmaceuticals

Ogawa, Kazuma*; Mukai, Takahiro*; Arano, Yasushi*; Ono, Masahiro*; Hanaoka, Hirofumi*; Ishino, Seigo*; Hashimoto, Kazuyuki; Nishimura, Hiroshi*; Saji, Hideo*

Bioconjugate Chemistry, 16(4), p.751 - 757, 2005/07

https://doi.org/10.1021/bc040249w

Times Cited Count：61 Percentile：86.86(Biochemical Research Methods)

Rhenium-186-1-hydroxyethylidene-1,1-diphosphonate ( $^{186}$ Re-HEDP) has been used for the palliation of metastatic bone pain. Delayed blood clearance and high gastric uptake of radioactivity have been observed upon injection, due to the instability of $^{186}$ Re-HEDP in vivo. In this study, on the basis of the concept of bifunctional radiopharmaceuticals, we designed a stable $^{186}$ Re-mercaptoacetylglycylglycylglycine (MAG3) complex-conjugated bisphosphonate ( $^{186}$ Re-MAG3-HBP). After purification by HPLC, $^{186}$ Re-MAG3-HBP was synthesized with a radiochemical purity of over 95%. In biodistribution experiments, the radioactivity level of $^{186}$ Re-MAG3-HBP in bone was significantly higher than that of $^{186}$ Re-HEDP. Blood clearance of $^{186}$ Re-MAG3-HBP was faster than that of $^{186}$ Re-HEDP. In addition, the gastric accumulation of $^{186}$ Re-MAG3-HBP radioactivity was lower than that of $^{186}$ Re-HEDP. In conclusion, $^{186}$ Re-MAG3-HBP is expected to be a useful radiopharmaceutical for the palliation of metastatic bone pain.

Journal Articles

Design of a radiopharmaceutical for the palliation of painful bone metastases; Rhenium-186-labeled bisphosphonate derivative

Ogawa, Kazuma*; Mukai, Takahiro*; Arano, Yasushi*; Hanaoka, Hirofumi*; Hashimoto, Kazuyuki; Nishimura, Hiroshi*; Saji, Hideo*

Journal of Labelled Compounds and Radiopharmaceuticals, 47(11), p.753 - 761, 2004/11

https://doi.org/10.1002/jlcr.864

Times Cited Count：28 Percentile：61.65(Biochemical Research Methods)

no abstracts in English

Journal Articles

In vivo recognition of Cyclopentadienyltricarbonylrhenium (CpTR) derivatives

Uehara, Tomoya*; Koike, Miho*; Nakata, Hideo*; Miyamoto, Shigehiko*; Motoishi, Shoji; Hashimoto, Kazuyuki; Oku, Naoto*; Nakayama, Morio*; Arano, Yasushi*

Nuclear Medicine and Biology, 30(3), p.327 - 334, 2003/04

https://doi.org/10.1016/S0969-8051(02)00437-7

Times Cited Count：20 Percentile：50.16(Radiology, Nuclear Medicine & Medical Imaging)

no abstracts in English

Journal Articles

Production of $^{186,188}$ Re and recovery of tungsten from spent $^{188}$ W/ $^{188}$ Re generator

Kobayashi, Katsutoshi; Motoishi, Shoji; Terunuma, Kuzuo; Rauf, A. A.*; Hashimoto, Kazuyuki

Radiochemistry, 42(6), p.551 - 554, 2000/12

no abstracts in English

Journal Articles

Labeling with radioactive rhenium for the purpose of the pain relief of cancerous bone metastasis

Ogawa, Kazuma*; Ono, Masahiro*; Fujioka, Yasushi*; Saji, Hideo*; Mukai, Takahiro*; Konishi, Junji*; Uehara, Tomoya*; Arano, Yasushi*; Onoma, Katsuyuki

Kaku Igaku, 37(5), P. 577, 2000/09

no abstracts in English

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