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Superheavy Element Atomic Science Opened-up by the First Ionization Potential Measurements of Element 113, Nihonium

Research Project

Project/Area Number 18KK0086
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

Sato Tetsuya  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究主幹 (40370382)

Co-Investigator(Kenkyū-buntansha) 伊藤 由太  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究職 (30711501)
後藤 真一  新潟大学, 自然科学系, 准教授 (70334646)
Project Period (FY) 2018-10-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords超重元素 / イオン化エネルギー / 同位体分離 / アクチノイド / イオンビーム / 第一イオン化エネルギー / 相対論効果 / 電子衝撃法 / 原子科学
Outline of Final Research Achievements

It has been pointed out that the atomic structure and chemical properties of superheavy elements with atomic numbers above 100 may change relative to predictions from the periodic table due to strong relativistic effects. In this study, in cooperation with research groups of Switzerland and Russia, we aimed to establish an experimental chemical method using single-atom ion beams and molecules for superheavy elements up to element 113, nihonium. As a result, the conditions for producing ion beams with a gas-jet coupled plasma ion source were determined, and it was shown that this ion source is useful at the end of the periodic table with large atomic numbers. In addition, volatile molecules of the superheavy element dubnium were synthesized, and their volatility was clarified.

Academic Significance and Societal Importance of the Research Achievements

原子核の周りを運動する電子が帯びる相対論効果は、すべての元素に内在する。超重元素では、その影響が特に顕著となり、原子構造や化学的性質までが変化する可能性が指摘されてきた。その一方、超重元素は加速器でしか合成できず、短寿命であるため、その性質はほとんど明らかになっていない。本研究で開発した単一原子を対象としたイオンビーム生成技術は、このような極限領域にある元素を対象とした研究を開拓するものである。また、本研究によって明らかとなった超重元素分子の揮発性は、今後、理論計算に対するベンチマークを与え、さらに将来の計算化学の精度向上に資することが期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (26 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (10 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 9 results,  Invited: 9 results)

  • [Int'l Joint Research] Paul Scherrer Institut(スイス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Flerov Laboratory of Nuclear Reactions(ロシア連邦)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ポールシェラー研究所(スイス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ドゥブナ合同原子核研究所(ロシア連邦)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ポール・シェラー研究所(スイス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ドゥブナ合同原子核研究所(ロシア連邦)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ポール・シェラー研究所(スイス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ドゥブナ合同原子核研究所(ロシア連邦)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ポール・シェラー研究所(スイス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ドゥブナ合同原子核研究所(ロシア連邦)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Chemistry of the elements at the end of the actinide series using their low-energy ion-beams2022

    • Author(s)
      Sato Tetsuya K.、Nagame Yuichiro
    • Journal Title

      Radiochimica Acta

      Volume: 110 Issue: 6-9 Pages: 441-451

    • DOI

      10.1515/ract-2022-0001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chemical Characterization of a Volatile Dubnium Compound, DbOCl32021

    • Author(s)
      Chiera Nadine M.、Sato Tetsuya K.、Eichler Robert、Tomitsuka Tomohiro、Asai Masato、Adachi Sadia、Dressler Rugard、Hirose Kentaro、Inoue Hiroki、Ito Yuta、Kashihara Ayuna、Makii Hiroyuki、Nishio Katsuhisa、Sakama Minoru、Shirai Kaori、Suzuki Hayato、Tokoi Katsuyuki、Tsukada Kazuaki、Watanabe Eisuke、Nagame Yuichiro
    • Journal Title

      Angewandte Chemie

      Volume: 133 Issue: 33 Pages: 18015-18018

    • DOI

      10.1002/ange.202102808

    • NAID

      120007146082

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Actinides and Transactinides2020

    • Author(s)
      Nagame Yuichiro、Sato Tetsuya K.、Kratz Jens V.
    • Journal Title

      Kirk‐Othmer Encyclopedia of Chemical Technology

      Volume: なし Pages: 1-52

    • DOI

      10.1002/0471238961.0103200919050102.a01.pub3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Chemistry of the elements at the end of the actinide series using their low-energy ion-beams2023

    • Author(s)
      Tetsuya K. Sato
    • Organizer
      ARCEBS-2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 超重元素化学研究に向けたガスジェット結合型EBGP イオン源の開発2023

    • Author(s)
      佐藤 哲也, 青木 涼太, 宮地 優太, 浅井 雅人, 伊藤 由太, 内馬場 優太, Gong Gyoengmin, 名取 日菜, 塚田 和明, 永目 諭一郎
    • Organizer
      日本化学会 第103回春季年会2023
    • Related Report
      2022 Annual Research Report
  • [Presentation] Single atom chemistry of superheavy element at JAEA2022

    • Author(s)
      Tetsuya K. Sato
    • Organizer
      37th Symposium on Chemical Kinetics and Dynamics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] JAEA-ISOLを用いた重アクチノイド原子科学へのアプローチ2021

    • Author(s)
      佐藤哲也
    • Organizer
      第9回イオン移動度研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Current Status of Atomic/Chemical Studies of Heavy and Transactinide Elements at JAEA2021

    • Author(s)
      Tetsuya K. Sato
    • Organizer
      Atomic Structure of Actinides & Related Topics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 超重元素用EBGPイオン源の開発2021

    • Author(s)
      青木涼太,佐藤哲也、大谷怜、鈴木颯人、伊藤由太、浅井雅人、塚田和明、永目諭一郎
    • Organizer
      日本化学会第101春季年会(2021)
    • Related Report
      2020 Research-status Report
  • [Presentation] Current status of atomic/chemical studies of heavy and trans-actinide elements at JAEA2020

    • Author(s)
      T. K. Sato
    • Organizer
      57th Annual Convention of Chemists 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Chemical characterization of the heaviest elements2020

    • Author(s)
      T. K. Sato
    • Organizer
      The 19th CNS International Summer School (CNSSS20)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Chemical & Atomic Studies of the Heaviest Elements with JAEA-ISOL2020

    • Author(s)
      T. K. Sato
    • Organizer
      The 19th CNS International Summer School (CNSSS20)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 重元素の化学2020

    • Author(s)
      佐藤哲也
    • Organizer
      物質科学研究討論会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Atomic and Chemical Properties of Lawrencium (Lr, Z = 103) and an Outlook to the Transactinides2019

    • Author(s)
      T. K. Sato, M. Asai, Y. Kaneya, A. Toyoshima, Y. Ito, K. Tsukada, K. Tokoi, T. Tomitsuka, H. Suzuki, H. Makii, A. Osa, Y. Nagame, M. Sakama, S. Ichikawa, T. Oonishi, A. Borschevsky, Ch. E. Duellmann, J. V. Kratz, M. Schaedel, T. Stora, V. Pershina, and R. Eichler
    • Organizer
      6th International Conference on the Chemistry and Physics of the Transactinide Elements (TAN19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic and Chemical Properties of the Heaviest Actinide Element, Lawrencium (Lr, Z = 103)2019

    • Author(s)
      T. K. Sato, M. Asai, Y. Kaneya, A. Toyoshima, Y. Ito, K. Tsukada, K. Tokoi, T. Tomitsuka, H. Suzuki, H. Makii, A. Osa, Y. Nagame, M. Sakama, S. Ichikawa, T. Oonishi, A. Borschevsky, Ch. E. Duellmann, J. V. Kratz, M. Schaedel, T. Stora, V. Pershina, and R. Eichler
    • Organizer
      Mendeleev Congress XXI
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic/Chemical Properties of the Heaviest Actinide Element Lawrencium2018

    • Author(s)
      Tetsuya K. Sato
    • Organizer
      ARCEBS2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2018-10-12   Modified: 2024-01-30  

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