On the introduction of {sup 17}O+p reaction rates evaluated through the THM in AGB nucleosynthesis calculations

Journal Article · Fri May 09 04:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4875315· OSTI ID:22280394

Palmerini, S.; Sergi, M. L.; La Cognata, M.; Pizzone, R. G. ^[1]; Lamia, L.; Spitaleri, C. ^[2]

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1. I.N.F.N. Laboratori Nazionali del Sud, via Santa Sofia 62, Catania (Italy)
2. Dipartimento di Fisica e Astronomia, Universitá degli Studi di Catania (Italy)

The rates for the {sup 17}O(p,αα{sup 14}N, {sup 17}O(p,α){sup 18}F and {sup 18}O(p,α){sup 15}N reactions deduced trough the Trojan Horse Method (THM) have been introduced into a state-of-the-art asymptotic giant branch (AGB) models for proton-capture nucleosynthesis and cool bottom process. The predicted abundances have been compared with isotopic compositions provided by geochemical analysis of presolar grains. As a result, an improved agreement is found between the models and the isotopic mix of oxide grains of AGB origins, whose composition is the signature of low-temperature proton-capture nucleosynthesis.

• OSTI ID: 22280394
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1595; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
ASTROPHYSICS
CAPTURE
COMPARATIVE EVALUATIONS
COSMOLOGY
ELEMENT ABUNDANCE
FLUORINE 18
GEOCHEMISTRY
GIANT STARS
ISOTOPE RATIO
NITROGEN 15
NUCLEAR REACTION KINETICS
NUCLEOSYNTHESIS
OXYGEN 17 TARGET
PROTON REACTIONS