Indirect Measurement of {sup 15}N(p,{alpha}){sup 12}C and {sup 18}O(p,{alpha}){sup 15}N. Applications to the AGB Star Nucleosynthesis

Journal Article · Sun Apr 06 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2916951· OSTI ID:21136998

La Cognata, M; Spitaleri, C; Cherubini, S; Crucilla, V; Gulino, M; Lamia, L; Pizzone, R G; Puglia, S M. R.; Rapisarda, G G; Romano, S; Sergi, M L; Tumino, A ^[1]; Tribble, R; Al-Abdullah, T; Banu, A; Fu, C; Goldberg, V; Mukhamedzhanov, A; Tabacaru, G; Trache, L ^[2]

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1. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud and Universita degli Studi di Catania, Catania (Italy)
2. Cyclotron Institute, Texas A and M University, College Station, TX 77843 (United States)

The Trojan Horse Method has been recently applied to the study of reactions involved in fluorine nucleosynthesis inside AGB stars. Fluorine abundance is important since it allows to constrain mixing models from the comparison of the observed fluorine abundances with the ones predicted by models. Anyway direct measurements of the cross section do not extend down to the Gamow peak, which is the astrophysically relevant energy region. In particular the study focuses on the {sup 15}N(p,{alpha}){sup 12}C and the {sup 18}O(p,{alpha}){sup 15}N reactions which can influence fluorine yield as they are part of {sup 19}F production/destruction network.

• OSTI ID: 21136998
• Journal Information: AIP Conference Proceedings, Vol. 1001, Issue 1; Conference: 9. Torino workshop on evolution and nucleosynthesis in AGB stars; 2. Perugia workshop on nuclear astrophysics, Perugia (Italy), 21-27 Oct 2007; Other Information: DOI: 10.1063/1.2916951; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12
COMPARATIVE EVALUATIONS
CROSS SECTIONS
ELEMENT ABUNDANCE
FLUORINE 19
GIANT STARS
NITROGEN 15 TARGET
NUCLEAR REACTION YIELD
NUCLEOSYNTHESIS
OXYGEN 18 TARGET
PROTON REACTIONS
SCATTERING