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A NOVEL APPROACH TO MEASURE THE CROSS SECTION OF THE O-18(p, alpha)N-15 RESONANT REACTION IN THE 0-200 keV ENERGY RANGE
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SYSNO ASEP 0339141 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A NOVEL APPROACH TO MEASURE THE CROSS SECTION OF THE O-18(p, alpha)N-15 RESONANT REACTION IN THE 0-200 keV ENERGY RANGE Author(s) La Cognata, M. (IT)
Spitaleri, C. (IT)
Mukhamedzhanov, A. M. (US)
Banu, A. (US)
Cherubini, S. (IT)
Coc, A. (FR)
Crucilla, V. (IT)
Goldberg, V. (US)
Gulino, M. (IT)
Irgaziev, B. (PK)
Kiss, G. G. (HU)
Lamia, L. (IT)
Mrázek, Jaromír (UJF-V) RID, ORCID, SAI
Pizzone, R. G. (IT)
Puglia, S. M. R. (IT)
Rapisarda, G. G. (IT)
Romano, S. (IT)
Sergi, M. L. (IT)
Tabacaru, G. (US)
Trache, L. (US)
Tribble, R. E. (US)
Trzaska, W. (FI)
Tumino, A. (IT)Source Title Astrophysical Journal - ISSN 0004-637X
Roč. 708, č. 1 (2010), s. 796-811Number of pages 16 s. Language eng - English Country US - United States Keywords nuclear reactions ; nucleosynthesis ; abundances Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000272790400068 DOI 10.1088/0004-637X/708/1/796 Annotation The O-18(p, alpha)N-15 reaction is of primary importance to pin down the uncertainties, due to nuclear physics input, affecting present-day models of asymptotic giant branch stars. Its reaction rate can modify both fluorine nucleosynthesis inside such stars and oxygen and nitrogen isotopic ratios, which allow one to constrain the proposed astrophysical scenarios. Thus, an indirect measurement of the low-energy region of the O-18(p, alpha)N-15 reaction has been performed to access, for the first time, the range of relevance for astrophysical application. In particular, a full, high-accuracy spectroscopic study of the 20 and 90 keV resonances has been performed and the strengths deduced to evaluate the reaction rate and the consequences for astrophysics. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2010
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