2009 Fiscal Year Final Research Report
Gamma-Ray Spectroscopy of Strange Baryon Systems
| Project/Area Number |
17070001
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
TAMURA Hirokazu Tohoku University, 大学院・理学研究科, 教授 (10192642)
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| Co-Investigator(Kenkyū-buntansha) |
KOIKE Takeshi 東北大学, 大学院・理学研究科, 助教 (70396422)
FUJII Yu 東北大学, 大学院・理学研究科, 助教 (30302079)
KANDA Hiroki 東北大学, 大学院・理学研究科, 助教 (40321971)
MIW Kozi 東北大学, 大学院・理学研究科, 助教 (50443982)
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| Project Period (FY) |
2005 – 2009
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| Keywords | ハイパー核 / ガンマ線分光 / ストレンジネス / ゲルマニウム検出器 / PWO検出器 / ΛN相互作用 |
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| Research Abstract |
We carried out an experiment of precisionγ-ray spectroscopy of ^<12>_ΛC and ^<11>_ΛB hypernuclei at KEK and successfully revealed their structures, particularly their ground state doublets, which enables us to establish the ΛN spin-dependent interaction strengths. In order to extend our study on hypernuclearγ-ray spectroscopy at J-PARC, we developed and constructed a new Ge detector array (Hyperball-J) which is tolerant of higher counting rates. Here, we successfully developed a low-temperature Ge detector cooled with a mechanical refrigerator and fast background suppression counters using PWO scintillator. We also fabricated detectors for the SKS spectrometer system at the J-PARC K1.8 beam line and confirmed the performance of the spectrometer with pion beams.
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Research Products
(50 results)
