Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ennp.conf..307t&link_type=abstract
"EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS . Proceedings of the Carpathian Summer School of Physics 2005 . Held 13-24 June
Astronomy and Astrophysics
Astrophysics
Scientific paper
During the last decade, new indirect techniques have been developed to determine reaction rates of interest in nuclear astrophysics. One of these involves measurements of asymptotic normalization coefficients (ANCs). ANCs, which provide the normalization of the tail of the overlap function, determine S factors for direct capture reactions at astrophysical energies. They also can be related to resonance capture rates and are particularly useful for determining proton-capture reaction rates that involve subthreshold resonance states. Proton ANCs have been measured by peripheral transfer reactions using both stable beams and targets and radioactive beams. Recently neutron ANCs have been measured by heavy-ion transfer reactions. Using mirror symmetry, the neutron ANCs can be related to proton ANCs and the results can then be used to determine direct capture reaction rates. Following an introduction to ANCs, recent experiments are discussed along with the astrophysical implications of these measurements.
Al-Abdullah Tariq
Bém P.
Burjan V.
Carstoiu Florin
Fu Changbo
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