6533b863fe1ef96bd12c7803
RESEARCH PRODUCT
New High-Precision Measurement of the Reaction Rate of the 18O(p, α)15N Reaction via THM
A. CocG. G. KissB. F. IrgazievM. La CognataG. G. RapisardaR. E. TribbleM. L. SergiMarisa GulinoR. G. PizzoneWladyslaw Henryk TrzaskaLivio LamiaJ. MrazekA. M. MukhamedzhanovSilvio CherubiniV. CrucillàG. TabacaruL. TracheLi ChengboA. BanuV. Z. GoldbergClaudio SpitaleriS. M. R. PugliaAurora TuminoS. Romanosubject
PhysicsNuclear reactionabundances[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]InstrumentationAnalytical chemistryResonanceFOS: Physical sciencesnucleosynthesisAstronomy and Astrophysics[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 sciences3. Good healthReaction rateAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary Science0103 physical sciences010306 general physics010303 astronomy & astrophysicsSolar and Stellar Astrophysics (astro-ph.SR)nuclear reactionsdescription
The 18O(p,alpha)15N reaction rate has been extracted by means of the Trojan-Horse method. For the first time the contribution of the 20-keV peak has been directly evaluated, giving a value about 35% larger than previously estimated. The present approach has allowed to improve the accuracy of a factor 8.5, as it is based on the measured strength instead of educated guesses or spectroscopic measurements. The contribution of the 90-keV resonance has been determined as well, which turned out to be of negligible importance to astrophysics.
year | journal | country | edition | language |
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2008-09-25 |