6533b851fe1ef96bd12a9976

RESEARCH PRODUCT

Coulomb dissociation of 27P: A reaction of astrophysical interest

C. WimmerHans GeisselA. ChatillonStefanos PaschalisMatthias HeilWolfgang OttAndreas WagnerF. WamersK. MahataC. KaragiannisC. Rodriguez-tajesY. LitvinovThomas AumannO. KiselevHelmut WeickEnrique CasarejosC. MuentzU. Datta-pramanikF. HammacheJ. HoffmanS. GironK. LarssonZsolt FülöpK. SümmererUwe GreifeW. ProkopowiczM. StanoiuH. Alvarez-polJoachim StrothD. GalavizStefan TypelZ. ElekesC. NociforoS. Beceiro NovoD. RossiK. BoretzkyT. Le BleisD. Cortina-gilRalf PlagK.-h. BehrHerbert A. SimonHåkan JohanssonN. Kurz

subject

PhysicsStarsNucleosynthesisCoulombCoulomb barrierObservableAtomic physicsSpectroscopyDissociation (chemistry)Galaxy

description

The ground-state decay of 26Al(0+) (T 1/2=1.05× 106) has a shorter life-time than the Universe. The presence of this element in the Galaxy was measured via g-ray spectroscopy, showing that the nucleosynthesis of this element is an ongoing process in stars. The proton-capture reaction 26Si(p,γ) 27P competes with the production of 26Al(0+) by β-decay. Coulomb dissociation of 27P has been suggested as an indirect method to measure radiative-proton capture when the direct reaction is not feasible. Such an experiment was performed at GSI with a secondary 27P beam produced by fragmenting a 36Ar primary beam at 500 A MeV. Two main observables are preliminarily presented in this work: the reaction cross section and the relative-energy spectrum of the outgoing fragments © Copyright owned by the author(s).

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