| Project/Area Number |
23244060
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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 |
JEONG SUNCHAN 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 (00262105)
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| Co-Investigator(Kenkyū-buntansha) |
HIRAYAMA Yshikazu 高エネルギー加速器機構, 素粒子原子核研究所, 助教 (30391733)
MIYATAKE Hiroari 高エネルギー加速器機構, 素粒子原子核研究所, 教授 (50190799)
ISHIYAMA Hironobu 高エネルギー加速器機構, 素粒子原子核研究所, 研究機関講師 (50321534)
WATANABE Yutaka 高エネルギー加速器機構, 素粒子原子核研究所, 研究機関講師 (50353363)
IMAI Nobuaki 高エネルギー加速器機構, 素粒子原子核研究所, 助教 (80373273)
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| Co-Investigator(Renkei-kenkyūsha) |
MUKAI Momo 筑波大学大学院, 物理学研究科, 修士過程2
KIMURA Sota 筑波大学大学院, 物理学研究科, 博士過程1
KIM Yung-hee ソウル大学大学院, 物理天文学科, 博士過程2
OYAIZU Mchihiro 高エネルギー加速器研究機構, 素粒子原子核研究所, 研究支援員
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥49,140,000 (Direct Cost: ¥37,800,000、Indirect Cost: ¥11,340,000)
Fiscal Year 2013: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2012: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Fiscal Year 2011: ¥24,310,000 (Direct Cost: ¥18,700,000、Indirect Cost: ¥5,610,000)
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| Keywords | ｒ－過程第3ピーク滞留核 / レーザーイオン化 / 多核子移行反応 / 元素選択型同位体分離器 / 単一核種生成分離 / 元素選択度 / プラズマ効果 / Ｎ＝１２６滞留核 / 単一核種生成分離器 / アルゴンガスセル / レーザー共鳴イオン化 / 多核子移行反応断面積 / 入射核側破片核 / 標的側破片核 / 多核子移行反応短面積 / ガスセル / 質量分離器VAMOS / 標的核側破片核 |
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| Research Abstract |
We have developed an element-selective isotope separator KISS (KEK Isotope Separator System) for direct access to the waiting nuclei with neutron number (N) of 126 on the r-process path in the chart of nuclides. The performance of the KISS was investigated by using beams from RIKEN Ring Cyclotron. The performance achieved so far for iron was about 1/400, 200, and 200ms for the overall extraction efficiency, selectivity, and average extraction time, respectively, without a significant degradation up to the beam intensity of 4pnA. In the test using the 124Xe beam, the target (198Pt)-recoils were successfully extracted as singly charged ions with similar performance. The KISS is ready to explore beta-decaying properties of the nuclei near to N=126 not yet reached so far.In addition, from the measured cross sections of the multi-nucleon transfer (MNT) channels in the 136Xe+198Pt system, we demonstrated that the MNT would be promising for producing such heavy neutron-rich nuclei.
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