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

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.
Authors:
; ; ;  [1] ; ;  [2]
  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)
Publication Date:
OSTI Identifier:
22280394
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1595; Journal Issue: 1; Conference: 7. European summer school on experimental nuclear astrophysics, Santa Tecla, Sicily (Italy), 15-17 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 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