2017 Fiscal Year Final Research Report
Pioneering mass measurement research of r-process nuclei in the blank spot region
| Project/Area Number |
15H02096
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
Miyatake Hiroari 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (50190799)
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| Co-Investigator(Kenkyū-buntansha) |
平山 賀一 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (30391733)
渡邉 裕 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (50353363)
石山 博恒 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (50321534)
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| Co-Investigator(Renkei-kenkyūsha) |
Wada Michiharu 高エネルギー加速器研究機構, 素粒子原子核研究所・和光原子核科学センター, 教授 (50240560)
Schury Peter 高エネルギー加速器研究機構, 素粒子原子核研究所・和光原子核科学センター, 助教 (30462724)
Ito Yuta 理化学研究所, 仁科加速器研究センター, 基礎科学特別研究員 (30711501)
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| Research Collaborator |
Mukai Momo 筑波大学, 大学院生
Kimura Sota 筑波大学, 大学院生
Moon Jun-young 韓国IBS, researcher
Park Jinhyung 韓国IBS, researcher
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 多重反射型飛行時間測定式質量分光器 / レーザー共鳴イオン化 / 速い中性子捕獲過程 / ブランクスポット |
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| Outline of Final Research Achievements |
Heavy elements like gold and platinum are generated in universe through successive decays of neutron-rich nuclei, which are synthesized in the rapid neutron-capture process (r-process). We can investigate an astrophysical condition of the r-process based on the masses and lifetimes of these neutron-rich nuclei.
In this pioneering research, we have been preparing mass measurements of neutron-rich heavy nuclei, which were produced artificially by the nuclear reactions and separated from many radioactive nuclei simultaneously produced. We have succeeded to construct a multi-reflection time-of-flight mass spectrograph (MRTOF-MS), which has been connected to the KEK isotope separation system (KISS). This experimental setup will make it possible to perform precise mass measurement of neutron-rich radioactive nuclei, being produced and separated using KISS.
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| Free Research Field |
原子核物理
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