| Project/Area Number |
24540261
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | Niigata University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
HORIUCHI Wataru 北海道大学, 理学(系)研究科(研究院), 助教 (00612186)
AOYAMA Shigeyoshi 新潟大学, 学術情報基盤機構情報基盤センター, 准教授 (60311528)
ARAI Kouji 長岡工業高等専門学校, 准教授 (20374738)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Triple-alpha reactions / Hoyle resonance / Hyperspherical method / Adiabatic potential / 複素吸収ポテンシャル / Triple-alpha reaction / Hyperspherical harmonics / Complex scaling method / Correlated Gaussian |
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| Outline of Final Research Achievements |
The process for synthesizing 12C through radiative capture reactions of three alpha-particles proceeds dominantly via two steps, a formation of 8Be resonance and a subsequent capture of an alpha-particle by emitting gamma rays. An experimental determination of the reaction rate is hopeless, so that a theoretically reliable calculation is needed. Using the hyperspherical coordinate we have developed a description of continuum states of three charged particles and have for the first time succeeded in obtaining the energy and width of the Hoyle resonance that plays a key role for the triple-alpha recations. This result warrants the possibility of calculating the reaction rate accurately. A calculation for reacing our goal is in progress.
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