| Project/Area Number |
21540295
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
HAYAKAWA Takehito 日本原子力研究開発機構, 研究主幹 (70343944)
SHIZUMA Toshiyuki 日本原子力研究開発機構, 研究主幹 (50282299)
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| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 原子核(実験) / 宙元素合成 / アルミニウム26 / ガンマ線分光 / ガンマ線同時計数 / ガンマ線角度相関測定 / 原子核構造 / ゲルマニウム検出器 / 宇宙元素合 / ビッグバン / 原子核反応 / 原子核構 / ガンマ線 / スピン・パリティ / 超新星爆発 / Al-26 / 宇宙元素合成 |
|---|
| Research Abstract |
Observation of gamma-rays originated from radioactive nucleus <26>^Al, whose half life is 720 thousand yr, is the crucial proof of nuclear synthesis in the Galaxy. In order to reproduce yield of the gamma-rays from <26>^Al, information of excited states in <26>^Si, which is located in bypass sequence of the <26>^Al creation cascade, is quite important. In our present study with gamma-ray spectroscopy, we newly observed one level at 5889-keV in the <26>^Si. Spin parity of this level is determined as 0^+ by our angular correlation measurements.
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