| Project/Area Number |
18K13566
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Osaka University |
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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 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 原子核実験 / ハロー核 / 励起状態 / 中性子ハロー核 / 不安定核 / 核反応 / 核構造 / 核反応実験 / 核半径 |
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| Outline of Final Research Achievements |
The purpose of this study is to realize the recoil distance transmission method to measure the nuclear radii of excited states. In this study, a problem was the contaminant of de-excited gamma-rays from the excited states produced at the reaction target. This gamma-ray component is observed in the energy spectra obtained by the tracking Ge detectors, which causes large systematic error in the cross sections. During this study, I found that this contaminant can be reduced by using a double slit and high-resolution spectrometer. This achievement can solve the problem in the data analysis and reduce the systematic error in the final results.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の成果により、短寿命励起状態の核反応研究が実現可能になった。さらに、比較的長寿命の励起状態であるアイソマーや、不安定核でも同じ手法が適応可能であり、本研究の波及効果は当初の想定を超えるものである。この手法の開発により、これまで不可能とされていた励起状態の核反応研究のみならず、安定核、不安定核、励起状態の実験研究を統一的に可能にする枠組みが整ったと言える。
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