Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..972..240y&link_type=abstract
EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (II): Proceedings of the Carpathian Summer School of Physics 2007. AIP Conferen
Astronomy and Astrophysics
Astrophysics
Nuclear Reaction Models And Methods, Beta Decay, Double Beta Decay, Electron And Muon Capture, 20<=A<=38, Low And Intermediate Energy Heavy-Ion Reactions, Shell Model, Nucleon-Nucleon Interactions
Scientific paper
Two astrophysical reactions, 22Mg(p,γ)23Al and 26Si(p,γ)27P, were investigated by using the Coulomb breakup of proton-rich isotopes 23Al and 27P. The radiative widths determined from the cross sections suggest that the β+ decay of 22Mg is favored over the 22Mg(p,γ)23Al reaction, while 26Si(p,γ)27P reaction is faster than the β+ decay of 26Si around the peak temperature of heavy novae. Two-neutron knockout reactions of the proton-rich sd-shell isotopes 26Si, 30S, and 34Ar were also studied. The measured branching ratios are well reproduced by a theoretical calculation which takes into account nucleon-nucleon correlation in a nucleus.
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