

RI応用チームでは、理研RIビームファクトリー(RIBF)の重イオン加速器を利用して、以下の研究を行っています。(1)RI製造技術の高度化研究を行い、製造したRIを用いて、様々な分野で応用研究を展開しています。Zn-65、Cd-109ならびにY-88のRIは、日本アイソトープ協会を通じて、国内ユーザーに有償頒布されています。(2)理研重イオンリニアック施設のECRイオン源とリニアックを利用した極微量元素分析技術を開発するとともに、ECRイオン源技術を応用して、高感度分析が可能な汎用型の質量分析装置を開発し、環境、宇宙地球科学、考古学などの分野に応用しています。(3)RIBFのECRイオン源に導入するイオン源試料の核化学的開発研究を行っています。
H. Haba, D. Kaji, H. Kikunaga, Y. Kudou, K. Morimoto, K. Morita, K. Ozeki, T. Sumita, A. Yoneda, Y. Kasamatsu, Y. Komori, K. Ooe, and A. Shinohara:
“Production and decay properties of the 1.9-s isomeric state in 261Rf”
Phys. Rev. C 83, 034602-1–7 (2011).
H. Haba, K. Akiyama, K. Tsukada, M. Asai, A. Toyoshima, T. Yaita, M. Hirata, K. Sueki, and Y. Nagame:
“Chloride complexation of Zr and Hf in HCl investigated by extended X-ray absorption fine structure spectroscopy –Toward characterization of chloride complexation of element 104, rutherfordium (Rf)–”
Bull. Chem. Soc. Jpn. 82, 698–703 (2009).
K. Takahashi, M. Tanaka, T. Urabe, T. Oikawa, M. Nemoto, H. Nagashima:
“First application of the depth profile of silica species as a tracer by fast-atom bombardment mass spectrometry: investigation of the circulation of seawater and silica uptake by diatoms”
Rapid Commun. Mass Spectrom. 23, 698–704 (2009).
H. Haba, D. Kaji, Y. Komori, Y. Kudou, K. Morimoto, K. Morita, K. Ooe, K. Ozeki, N. Sato, A. Shinohara, and A. Yoneda:
“RIKEN gas-filled recoil ion separator GARIS as a promising interface for superheavy element chemistry –Production of element 104, 261Rf, using the GARIS/gas-jet system–”
Chem. Lett. 38, 426–427 (2009).
H. Haba, H. Kikunaga, D. Kaji, T. Akiyama, K. Morimoto, K. Morita, T. Nanri, K. Ooe, N. Sato, A. Shinohara, D. Suzuki, T. Takabe, I. Yamazaki, A. Yokoyama, and A. Yoneda:
“Performance of the gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator GARIS for the 238U(22Ne,5n)255No reaction”
J. Nucl. Radiochem. Sci. 9, 27–31 (2008).
H. Haba, T. Akiyama, D. Kaji, H. Kikunaga, T. Kuribayashi, K. Morimoto, K. Morita, K. Ooe, N. Sato, A. Shinohara, T. Takabe, Y. Tashiro, A. Toyoshima, A. Yoneda, and T. Yoshimura:
“Startup of superheavy element chemistry at RIKEN”
Eur. Phys. J. D 45, 81–86 (2007).
H. Haba, D. Kaji, H. Kikunaga, T. Akiyama, N. Sato, K. Morimoto, A. Yoneda, K. Morita, T. Takabe, and A. Shinohara:
“Development of gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator GARIS for superheavy element chemistry”
J. Nucl. Radiochem. Sci. 8, 55–58 (2007).
H. Haba, K. Tsukada, M. Asai, A. Toyoshima, Y. Ishii, H. Toume, T. Sato, I. Nishinaka, T. Ichikawa, S. Ichikawa, Y. Nagame, W. Sato, K. Matsuo, Y. Kitamoto, Y. Tashiro, A. Shinohara, J. Saito, M. Ito, T. Ikezawa, M. Sakamaki, S. Goto, H. Kudo, H. Kikunaga, M. Arai, S. Kamataki, A. Yokoyama, K. Akiyama, K. Sueki, Y. Oura, M. Schädel, W. Brüchle, and J. V. Kratz:
“Extraction behavior of rutherfordium into tributylphosphate from hydrochloric Acid”
Radiochim. Acta 95, 1–6 (2007).
M. Kidera, K. Takahashi, S. Enomoto, Y. Mitsubori, A. Goto, and Y. Yano:
“Development of novel mass spectrometer equipped with ECRIS”
Eur. J. Mass Spectrom. 13, 239–248 (2007).
K. Takahashi and M. Tanaka:
“The identification and characterization of silicate complexes in calcium chloride solution using FAB-MS”
Anal. Chim. Acta 411, 109–119 (2000).
A. Kawashima, K. Takahashi, and A. Masuda:
“Geochemical estimation of the half-life for the double beta decay of 96Zr”
Phys. Rev. C 47, R2452–R2456 (1993).
K. Takahashi and A. Masuda:
“A young age of two diogenites and its genetic implication”
nature 343, 540–542 (1990).