New method to study sturcture of neutron-rich nuclei
Project/Area Number |
18K13574
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
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Research Institution | Kyushu University (2019-2020) Institute of Physical and Chemical Research (2018) |
Principal Investigator |
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Keywords | 不安定原子核 |
Outline of Final Research Achievements |
The present work aims at investigating structure of neutron-rich nuclei located far from the stability line. Thanks to the progress of accelerators, the neutron-rich nuclei are accessible; however there are few way to determine spins of their excited states, which are essential to clarify their structure. To overcome such difficulties, we take advantage of spatial asymmetry of beta rays from spin-polarized nuclei. As the first step of this study, we proposed a new method to produce the polarization of neutron-rich nuclei and successfully demonstrated the method. Now, we are ready to apply our method to neutron-rich nuclei.
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Academic Significance and Societal Importance of the Research Achievements |
本研究は安定核から遠く離れた中性子が極端に多い原子核を研究することを目的としている。中性子過剰核の構造は、原子核の構造自体の興味の他にも宇宙における爆発的元素合成過程の研究においても重要である。この構造解明のために、スピン偏極した原子核のベータ崩壊を用いるという独自な方法でアプローチしている。その第一段階として、中性子過剰核の新たなスピン偏極生成法の開発を行い、実証実験においてその有効性が確かめられた。本手法の確立によって、中性子過剰核研究の発展が期待できる。加えて、スピン偏極原子核は核磁気共鳴法に利用できるため、他研究分野への応用も期待できる。
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Report
(4 results)
Research Products
(10 results)
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[Presentation] Structure of neutron-rich Al investigated by spin-polarized Mg2020
Author(s)
Y. Hamano, H. Nishibata, T. Wakasa, A. Odahara, T. Shimoda, D. Maejima, Y. Okami, Y. Otani, S. Iimura, S. Kanaya, A. Hatakeyama, K.Asakawa, N.Sekiguchi, Y.Hirayama, C.D.P Levy, M.R. Pearson, J.Lassen, R. Li
Organizer
the International symposium on Clustering as a Window on the Hierarchical Structure of Quantum Systems (CLUSHIQ2020)
Related Report
Int'l Joint Research
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[Presentation] スピン偏極Mgのベータ崩壊を用いた中性子過剰なAl同位体の構造研究2020
Author(s)
西畑洸希, 浜野友哉, 小田原厚子, 下田正, 前島大樹, 大上能弘, 大谷優里花, 金谷晋之介, 飯村俊, 関口直太, 浅川寛太, 畠山温, 平山賀一, 若狭智嗣, C.D.P Levy, M.R. Pearson, J. Lassen, R. Li
Organizer
日本物理学会 第75回年次大会
Related Report
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[Presentation] スピン偏極Mgビームを用いた中性子過剰Alの構造研究2019
Author(s)
濵野友哉, 西畑洸希, 小田原厚子, 下田正, 前島大樹, 大上能弘, 大谷優里花, 飯村俊, 金谷 晋之介, 畠山温, 浅川寛太, 関口直太, 平山賀一, 若狭智嗣, C.D.P. Levy, M.R. Pearson, J. Lassen, R. Li
Organizer
第125回日本物理学会九州支部例会
Related Report
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[Presentation] Structure of neutron-rich 31Mg by β-decay spectroscopy of spin-polarized 31Na2018
Author(s)
Hiroki Nishibata , Shinnosuke Kanaya , Tadashi Shimoda , Atsuko Odahara , Shota Morimoto , Ayumi Yagi , Hiroshi Kanaoka , Matthew Pearson , Phil Levy , Masaaki Kimura , Naofumi Tsunoda , Takaharu Otsuka
Organizer
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Related Report
Int'l Joint Research
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[Presentation] Shape coexistence in 31Mg revealed by b-g and b-g-n spectroscopy with spin-polarized 31Na2018
Author(s)
H. Nishibata, S. Kanaya, T. Shimoda, A. Odahara, S. Morimoto, A. Yagi, H. Kanaoka, M. R. Pearson, C. D. P. Levy, M. Kimura, N. Tsunoda, and T. Otsuka
Organizer
The IX International Symposium on Exotic Nuclei (EXON2018)
Related Report
Int'l Joint Research / Invited