Počet záznamů: 1

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

  1. 1.
    0339141 - UJF-V 2010 RIV US eng J - Článek v odborném periodiku
    La Cognata, M. - Spitaleri, C. - Mukhamedzhanov, A. M. - Banu, A. - Cherubini, S. - Coc, A. - Crucilla, V. - Goldberg, V. - Gulino, M. - Irgaziev, B. - Kiss, G.G. - Lamia, L. - Mrázek, Jaromír - Pizzone, R. G. - Puglia, S. M. R. - Rapisarda, G. G. - Romano, S. - Sergi, M. L. - Tabacaru, G. - Trache, L. - Tribble, R. E. - Trzaska, W. - Tumino, A.
    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.
    Astrophysical Journal. Roč. 708, č. 1 (2010), s. 796-811 ISSN 0004-637X
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: nuclear reactions * nucleosynthesis * abundances
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 7.436, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0182735