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RIKEN Nishina Center for Accelerator-Based Science Nuclear Chemistry Group

Director: Hiromitsu Haba (D.Sc.)

Research Summary

Hiromitsu  Haba

Nuclear Chemistry Group develops production technologies for useful radioisotopes (RIs) using the heavy ion accelerators at RIKEN RI Beam Factory, and conducts research on RI applications in the field of nuclear and radiochemistry. Industrial Application Research Team promotes industrial applications of the accelerator facility and its related technologies.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Environmental Science
  • Complex Systems
  • Social Sciences
  • Mathematical & Physical Sciences
  • Chemistry
  • Engineering

Keywords

  • Nuclear chemistry
  • RI production and application
  • Superheavy element science
  • Sharing accelerator facilities for common use program
  • Heavy-ion beams irradiation

Selected Publications

  • 1. M. Aikawa, S. Goto, D. Gantumur, D. Ichinkhorloo, N. Ukon, N. Otuka, S. Takács, and H. Haba:
    "Activation cross sections of 7Li-induced reactions on natTi: Implications for monitor reactions"
    Nucl. Instrum. Methods Phys. Res. Sect. B 559, 165579 (2025).
  • 2. A. Yamaguchi, Y. Shigekawa, H. Haba, H. Kikunaga, K. Shirasaki, M. Wada, and H. Katori:
    "Laser spectroscopy of triply charged 229Th isomer for a nuclear clock"
    Nature 629, 62 (2024).
  • 3. Y. Ode, A. R. Pradipta, P. Ahmadi, A. Ishiwata, A. Nakamura, Y. Egawa, Y. Kusakari, K. Muguruma, Y. Wang, X. Yin, N. Sato, H. Haba, and K. Tanaka:
    "Therapeutic efficacy of 211At-radiolabeled 2,6-diisopropylphenyl azide in mouse models of human lung cancer"
    Chem. Sci. 14, 8054 (2023).
  • 4. H. Takashima, K. Ohnuki, S. Manabe, Y. Koga, R. Tsumura, T. Anzai, Y. Wang, X. Yin, N. Sato, Y. Shigekawa, A. Nambu, S. Usuda, H. Haba, H. Fujii, and M. Yasunaga:
    "Tumor targeting of 211At-labeled antibody under sodium ascorbate protection against radiolysis"
    Mol. Pharm. 20, 1156 (2023).
  • 5. T. Yokokita, S. Yano, Y. Komori, and H. Haba:
    "Anion- and cation-exchange studies of Zr, Hf, and Th using ion-exchange resin and fiber in H2SO4 media for chemical characterization of sulfate complex of Rf"
    J. Radioanal. Nucl. Chem. 331, 1127 (2022).
  • 6. Y. Shigekawa, A. Yamaguchi, K. Suzuki, H. Haba, T. Hiraki, H. Kikunaga, T. Masuda, S. Nishimura, N. Sasao, A. Yoshimi, and K. Yoshimura:
    "Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th"
    Phys. Rev. C 104, 024306 (2021).
  • 7. Y. Kasamatsu, K. Toyomura, H. Haba, T. Yokokita, Y. Shigekawa, A. Kino, Y. Yasuda, Y. Komori, J. Kanaya, M. Huang, M. Murakami, H. Kikunaga, E. Watanabe, T. Yoshimura, K. Morita, T. Mitsugashira, K. Takamiya, T. Ohtsuki, and A. Shinohara:
    "Co-precipitation behaviour of single atoms of rutherfordium in basic solutions"
    Nat. Chem. 13, 226 (2021).
  • 8. T. Tanaka, K. Morita, K. Morimoto, D. Kaji, H. Haba, R. A. Boll, N. T. Brewer, S. Van Cleve, D. J. Dean, S. Ishizawa, Y. Ito, Y. Komori, K. Nishio, T. Niwase, B. C. Rasco, J. B. Roberto, K. P. Rykaczewski, H. Sakai, D. W. Stracener, and K. Hagino:
    "Fusion dynamics for hot fusion reactions to synthesize superheavy nuclei revealed in quasielastic barrier distributions"
    Phys. Rev. Lett. 124, 052502 (2020).
  • 9. H. Haba, F. Fan, D. Kaji, Y. Kasamatsu, H. Kikunaga, Y. Komori, N. Kondo, H. Kudo, K. Morimoto, K. Morita, M. Murakami, K. Nishio, J. P. Omtvedt, K. Ooe, Z. Qin, D. Sato, N. Sato, T. K. Sato, Y. Shigekawa, A. Shinohara, M. Takeyama, T. Tanaka, A. Toyoshima, K. Tsukada, Y. Wakabayashi, Y. Wang, S. Wulff, S. Yamaki, S. Yano, Y. Yasuda, and T. Yokokita:
    "Production of 266Bh in the 248Cm(23Na,5n)266Bh reaction and its decay properties"
    Phys. Rev. C 102, 024625 (2020).
  • 10. H. Haba:
    "A new period in superheavy-element hunting"
    Nat. Chem. 11, 10 (2019).

Recent Research Results

Lab Members

Principal investigator

Hiromitsu Haba
Director

Core members

Yousuke Kanayama
Technical Scientist
Hiroo Hasebe
Technical Scientist
Yudai Shigekawa
Postdoctoral Researcher
Sayantani Mitra
Postdoctoral Researcher
Hiromichi Shimizu
Postdoctoral Researcher
Akihiro Nambu
Technical Staff I
Yayoi Ikawa
Technical Staff I
Teruhito Nakashita
Junior Research Associate
Nozomi Sato
Research Part-time Worker I
Michiko Kitagawa
Research Part-time Worker I
Keiko Watanabe
Research Part-time Worker I
Minako Osanai
Research Part-time Worker II
Kazuya Takahashi
Special Temporary Research Scientist
Tamaki Watanabe
Special Temporary Technical Scientist

Careers

Position Deadline
Seeking a Postdoctoral Researcher or Contract Researcher (W24141) Open until filled

Contact Information

Nishina Bldg.
2-1 Hirosawa
Wako, Saitama
351-0198 Japan
Email: haba:@riken.jp

Organization

Industrial Application Research Team
Atsushi Yoshida (D.Sc.)

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