Direct measurement of 12C-4He nuclear fusion cross section at stars
| Project/Area Number |
20340056
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Kyushu University |
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Principal Investigator |
SAGARA Kenshui Kyushu University, 大学院・理学研究院, 教授 (00128026)
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| Co-Investigator(Kenkyū-buntansha) |
TERANISHI Takashi 九州大学, 大学院・理学研究院, 准教授 (10323495)
IKEDA Nobuo 九州大学, 大学院・工学研究院, 教授 (70193208)
HASHIMOTO Masaaki 九州大学, 大学院・理学研究院, 教授 (20228422)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2010: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2009: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2008: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Keywords | 天体ヘリウム燃焼 / 炭素-ヘリウム核融合 / 断面積測定 / 星の進化 / 膜無し気体標的 / タンデム加速器 / 極低バックグランド / 天体核反応 / ヘリウム燃焼 / 直接測定 / 極低バックグランド測定 / 膜なし気体標的 |
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| Research Abstract |
To simulate evolution of stars, Carbon-Helium nuclear fusion rate at low energy of Ecm=3MeV is essentially important. But measurement of the rate is very difficult, and no one has succeeded in it. In our present study, we developed a windowless Helium gas target of the highest thickness in the world, reduced backgrounds to a level of 10^<-15> lower than Carbon beam particles, and measured Carbon-Helium fusion rate at Ecm=1.5 MeV, the lowest in the world. We also prepared for measurements of the fusion rate down to 0.7 MeV, to estimate the fusion rate at 0.3 MeV by extrapolation.
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Report
(4 results)
Research Products
(41 results)
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[Journal Article] Direct Measurement of ^4He(^<12>C, ^<16>O)γ Reaction at KUTL2010
Author(s)
K.Fujita, K.Sagara, T.Teranishi, T.Goto, R.Iwabuchi, S.Matsuda, K.Nakano, N.Oba,M.Taniguchi, H.Yamaguchi
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Journal Title
AIP Conference Proceedings Volume 1238
Pages: 211-213
Related Report
Peer Reviewed
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[Presentation] Measurement of 4He(12C,16O)γnear Stellar Energy by Inverse Kinematics2010
Author(s)
K.Fujita, K.Sagara, T.Teranishi, R.Iwasaki, S.Matsuda, T.Mitsuzumi, N.Oba, M.Taniguchi, H.Yamaguchi
Organizer
Korea Japan Exchange Session at KPS meeting
Place of Presentation
Phoenix park, Pyeong Chang, Korea
Related Report
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[Presentation] Direct measurement of the 4He(12C,16O)γ cross section near stellar energy2010
Author(s)
藤田訓裕, 相良建至, 寺西高, 後藤昴, 岩淵利恵, 松田沙矢香, 中野桂樹, 大場希美, 谷口雅彦, 山口祐幸
Organizer
11th Symposium on Nuclei in the Cosmos (NIC XI)
Place of Presentation
Heidelberg
Related Report
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[Presentation] Direct measurement of 4He(12C,16O)γ reaction near stellar energy2010
Author(s)
K.Fujita, K.Sagara, T.Teranishi, T.Goto, R.Iwabuchi, S.Matsuda, K.Nakano, N.Oba, M.Taniguchi, H.Yamaguchi
Organizer
The 10th.International Symposium on Origin of Matter and Evolution of the Galaxies (OMEG10)
Place of Presentation
RCNP, Osaka University, Ibaraki, Osaka, Japan.
Related Report
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[Presentation] Ecm=1.5MeVでの4He+12C→16O+γ断面積測定:BG低減2009
Author(s)
後藤昂, 相良建至, 寺西高, 藤田訓裕, 谷口雅彦, 岩淵利恵, 中野桂樹, 大場希美, 田中薫, 松田沙矢香, 山口裕幸
Organizer
第115回日本物理学会九州支部例会
Place of Presentation
宮崎大学
Related Report
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[Presentation] Present Status of direct ^4He(^<12>C,^<16>O)γ measurement near stellar energy at KUTL2009
Author(s)
藤田訓裕, 相良建至, 寺西高, 後藤昂, 岩淵利恵, 松田沙矢香, 中野桂樹, 大場希美, 谷口雅彦, 山口裕幸
Organizer
3rd Joint Meeting of the Nuclear Physics Divisions of the APS and JPS
Place of Presentation
Hawaii.
Related Report
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