Scattering of Be-7 and B-8 and the astrophysical S-17 factor Academic Article uri icon

abstract

  • Measurements of Be7 scattering at 87 MeV on a melamine (C3N6H6) target and of B8 at 95 MeV on C were performed. For Be7 the angular range was extended over previous measurements and monitoring of the intensity of the radioactive beam was improved. The measurements provide a renormalization of the absolute cross section of existing data on the proton transfer reaction N14(Be7,B8)C13 and lead to improved optical-model potentials used in the incoming and outgoing channels for the distorted-wave Born approximation analysis. The results yield an updated determination of the asymptotic normalization coefficient for the virtual decay B8 Be7+p. The new value, Ctot2(8B)=0.4660.049 fm-1, is slightly larger than, but consistent with, the previous result. This implies an astrophysical factor, S17(0)=18.01.9 eV b, for the solar neutrino-generating reaction Be7(p,)B8. 2006 The American Physical Society.

published proceedings

  • PHYSICAL REVIEW C

author list (cited authors)

  • Tabacaru, G., Azhari, A., Brinkley, J., Burjan, V., Carstoiu, F., Fu, C., ... Zhou, S.

citation count

  • 41

complete list of authors

  • Tabacaru, G||Azhari, A||Brinkley, J||Burjan, V||Carstoiu, F||Fu, C||Gagliardi, CA||Kroha, V||Mukhamedzhanov, AM||Tang, X||Trache, L||Tribble, RE||Zhou, S

publication date

  • February 2006