Beta-delayed alpha spectrum of N-16 and the (C-12)(alpha,gamma)(O-16) cross section at low energies

Details Beta-delayed alpha spectrum of N-16 and the (C-12)(alpha,gamma)(O-16) cross section at low energies Beta-delayed alpha spectrum of N-16 and the (C-12)(alpha,gamma)(O-16) cross section at low energies

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..70..726b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 70, no. 6, p. 726-729.

Astronomy and Astrophysics

Astrophysics

61

Alpha Particles, Carbon Isotopes, Cosmochemistry, Energy Spectra, Nitrogen 16, Oxygen Isotopes, Error Analysis, Isotope Separation

Scientific paper

The alpha spectrum following the beta decay of N-16 from the isotope separator TISOL has been measured by detecting 10 exp 6 particles in coincidence with C-12 nuclei. These data, which show a low-energy interference anomaly accompanying the main alpha peak, permit a more precise determination of the p-wave amplitude of the astrophysically important reaction (C-12)(alpha,gamma)(O-16). The alpha spectrum and previous gamma-ray data have been fitted simultaneously by a K-matrix parametrization; a value of S(E = 0.3 MeV) = 57 +/- 13 keV b has been obtained for the E1 part of the (C-12)(alpha,gamma)(O-16) reaction.

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