2013 Fiscal Year Final Research Report
Study of the photonuclear reactions of p-nuclides by means of inorganic scintillation targets
| Project/Area Number |
23540342
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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 | Osaka University |
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Principal Investigator |
SHIMA Tatsushi 大阪大学, 核物理研究センター, 助教 (10222035)
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| Project Period (FY) |
2011 – 2013
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| Keywords | p-過程 / モリブデン92 / 能動標的 / 無機シンチレータ / 光核反応 / 放射化法 |
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| Research Abstract |
92Mo is the most neutron-deficient nuclide in molybdenum isotopes, and is supposed to be produced via the p-process of the astrophysical nucleosynthesis. It has been a long-standing problem in nuclear astrophysics that the observed abundance of 92Mo is smaller by a factor of a few ten than the predicted value of the p-process theory. One of the possible reason for this discrepancy is the inaccuracy of the 92Mo(gamma,p)91Nb reaction cross section which has not been measured experimentally. We developed a new method for measurement of the 92Mo(gamma,p)91Nb cross section by using an inorganic scintillator including molybdenum as an active target. A high-sensitivity photo-activation analysis was also developed, and was successfully used for measurement of the 92Mo(gamma,p)91Nb reaction cross section using a quasi-monoenergetic laser Compton-scattered gamma-ray beam provided at the NewSUBARU synchrotron radiation facility of the University of Hyogo.
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[Journal Article] Nuclear γ Rays from Stopped Muon Capture Reactions for Nuclear Isotope Detection2013
Author(s)
H. Ejiri, I.H. Hashim, Y. Hino, Y. Kuno, Y. Matsumoto, K. Ninomiya, H. Sakamoto, A. Sato, T. Shima, A. Shinohara, K. Takahisa, and N.H. Tran
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Journal Title
Journal of Physical Society of Japan
Volume: 82
Pages: 044202
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[Journal Article] Energy Calibration of the NewSUBARU Storage Ring for Laser Compton- Scattering Gamma Rays and Applications
Author(s)
H. Utsunomiya, T. Shima, K. Takahisa, D.M. Filipescu, O. Tesileanu, I. Gheorghe, H.-T. Nyhus, T. Renstrøm, Y.-W. Lui, Y. Kitagawa, S. Amano, and S. Miyamoto
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Journal Title
IEEE Transactions on Nuclear Science
Volume: (accepted for publication)
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