2022 Fiscal Year Final Research Report
Development of fixed unstable nuclear targets for nuclear reaction studies of rare radioactive nuclides
| Project/Area Number |
20K20526
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| Research Category |
Grant-in-Aid for Challenging Research (Pioneering)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
小川原 亮 京都大学, 化学研究所, 助教 (00807729)
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| Project Period (FY) |
2020-07-30 – 2023-03-31
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| Keywords | 不安定核標的 / 電子ビームイオントラップ / 精密核反応 |
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| Outline of Final Research Achievements |
The aim of this study is to develop a versatile and practical RI stationary target to realize nuclear reaction studies between unstable nuclei (RIs) and precise RI reaction studies using normal kinematics. Insertion of this target into the storage ring will openup a new research area by enabling collision experiments between RIs, which are unexplored by all, and the realization of research using normal kinematics will enable RI nuclear reaction experiments with an overwhelmingly high resolution. In this study, a prototype based on the electron beam ion trap principle was developed to efficiently target RIs with low production rate. Furthermore, in order to make the target practically usable, a new method for eliminating fatally coexisting residual gas ions was developed with a focus on improving the purity of the target.
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| Free Research Field |
不安定核物理
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| Academic Significance and Societal Importance of the Research Achievements |
不安定原子核(RI)は、原子核研究のみならず天文、宇宙、医学、薬学など、幅広い分野における重要な研究対象である。しかし加速器を用いたRIは、生成量が限られている上に有限な寿命で壊変してしまうため、精密な構造や性質の研究は容易ではない。また学術的に非常に重要なRI（例えば安定の島同位体など）の多くは安定核を用いた反応では決して生成できない。本研究での汎用型RI静止標的に開発はこれらの課題を解決する需要な手段である。大強度プローブビームを用いた準運動学による精密RI核反応研究を可能にし、RI同士の核反応による未到のRI生成を可能にすることが期待させる。
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