6533b837fe1ef96bd12a2021
RESEARCH PRODUCT
First measurement of the 18O(p,α)15N cross section at astrophysical energies
A. M. MukhamedzhanovG. TabacaruM. La CognataM. La CognataTariq Al-abdullahC. SpitaleriS. RomanoM. L. SergiM. L. SergiA. TuminoMarisa GulinoR. E. TribbleLivio LamiaG. G. RapisardaW. H. TrzaskaG. G. KissB. F. IrgazievR. G. PizzoneA. CocV. Z. GoldbergSalvatore TudiscoS. M. R. PugliaV. CrucillàSilvio CherubiniL. TracheA. BanuJ. Mrazeksubject
History010308 nuclear & particles physicsChemistry[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR][PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex][PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]01 natural sciencesResonance (particle physics)Computer Science ApplicationsEducationNuclear physicsReaction rateCross section (physics)0103 physical sciencesAtomic physics010303 astronomy & astrophysicsdescription
International audience; The 18O(p,α)15N reaction rate has been deduced by means of the Trojan horse method. For the first time the contribution of the 20 keV resonance has been directly evaluated, giving a value about 35% larger than the one in the literature. Moreover, the present approach has allowed to improve the accuracy by a factor 8.5, as it is based on the measured strength instead of spectroscopic measurements. The contribution of the 90 keV resonance has been also determined, which turned out to be of negligible importance to astrophysics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-06-08 |