The Trojan Horse Method as a tool to investigate low-energy resonances: the {sup 18}O(p, {alpha}){sup 15}N and {sup 17}O(p, {alpha}){sup 14}N cases

Journal Article · Thu Aug 12 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3485169· OSTI ID:21435993

La Cognata, M; Sergi, M L; Spitaleri, C; Cherubini, S; Gulino, M; Kiss, G; Lamia, L; Pizzone, R G; Romano, S ^[1]; Mukhamedzhanov, A; Goldberg, V; Tribble, R ^[2]; Coc, A; Hammache, F; Sereville, N de ^[3]; Irgaziev, B ^[4]; Tumino, A ^[5]

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1. University of Catania and INFN-LNS, Catania (Italy)
2. Cyclotron Institute, Texas A and M University, College Station, Texas (United States)
3. CSNSM CNRS/IN2P3, Orsay (France)
4. GIK-Institute of Engineering Sciences and Technology, Topi (Pakistan)
5. Kore University, Enna, Italy and INFN-LNS, Catania (Italy)

The {sup 18}O(p, {alpha}){sup 15}N and {sup 17}O(p, {alpha}){sup 14}N reactions are of primary importance in several as-trophysical scenarios, including nucleosynthesis inside Asymptotic Giant Branch stars and oxygen and nitrogen isotopic ratios in meteorite grains. They are also key reactions to understand exotic systems such as R-Coronae Borealis stars and novae. Thus, the measurement of their cross sections in the low energy region can be crucial to reduce the nuclear uncertainty on theoretical predictions, because the resonance parameters are poorly determined. The Trojan Horse Method, in its newly developed form particularly suited to investigate low-energy resonances, has been applied to the {sup 2}H({sup 18}O, {alpha}{sup 15}N)n and {sup 2}H({sup 17}O, {alpha}{sup 14}N)n reactions to deduce the {sup 18}O(p, {alpha}){sup 15}N and {sup 17}O(p, {alpha}){sup 14}N cross sections at low energies. Resonances in the {sup 18}O(p, {alpha}){sup 15}N and {sup 17}O(p, {alpha}){sup 14}N excitation functions have been studied and the resonance parameters deduced.

• OSTI ID: 21435993
• Journal Information: AIP Conference Proceedings, Vol. 1269, Issue 1; Conference: OMEG-2010: 10. international symposium on origin of matter and evolution of galaxies, Osaka (Japan), 8-10 Mar 2010; Other Information: DOI: 10.1063/1.3485169; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMPTOTIC SOLUTIONS
CALCULATION METHODS
EXCITATION FUNCTIONS
ISOTOPE RATIO
METEORITES
NITROGEN 14
NITROGEN 15
NOVAE
NUCLEAR STRUCTURE
NUCLEOSYNTHESIS
OXYGEN 17 TARGET
OXYGEN 18 TARGET
PROTON REACTIONS
RESONANCE
TRANSFER FUNCTIONS
BARYON REACTIONS
BINARY STARS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIMENSIONLESS NUMBERS
ERUPTIVE VARIABLE STARS
FUNCTIONS
HADRON REACTIONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL SOLUTIONS
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
STABLE ISOTOPES
STARS
SYNTHESIS
TARGETS
VARIABLE STARS