Are coupled channel effects important for the asymptotic normalization coefficient method?

Details Are coupled channel effects important for the asymptotic normalization coefficient method? Are coupled channel effects important for the asymptotic normalization coefficient method?

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phrvc..64f2801n&link_type=abstract

Physical Review C (Nuclear Physics), Volume 64, Issue 6, December 2001, p.062801

Physics

Nuclear Physics

9

Transfer Reactions, Coupled-Channel And Distorted-Wave Models, Solar Neutrinos, 6<=A<=19

Scientific paper

DWBA calculations are commonly used in the analysis of peripheral transfer reactions, to extract the asymptotic normalization coefficient (ANC). This quantity is uniquely related to the zero energy S-factor useful for astrophysical purposes. The aim of this work is to test the adequacy of the DWBA formalism. For a set of transfer reactions from which ANCs have been extracted, we perform full coupled channels calculations. We include the most relevant inelastic channels for both the entrance and exit partitions. The results show that the reactions 13C(3He,d)14Ng.s. and 14N(7Be,8B)13Cg.s. are free from coupling effects, even if some of the excited final-state channels are not. For 10B(7Be,8B)9Beg.s., the ANC should be extracted with caution. If the 10B and 9Be behave similarly in this reaction as in the 9Be(3He,d)10B case, couplings effects should not be neglected.

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