
%0 Journal Article
%A Barker, FC 
%A Kajino, T 
%T The 12C(a,g)16O Cross Section at Low Energies
%J Australian Journal of Physics
%D 1991/06/01
%V 44
%N 4
%P 369-396
%K 
%R https://doi.org/10.1071/PH910369
%U https://www.publish.csiro.au/paper/PH910369 
%X An R-matrix formula for the cross section for radiative capture reactions is developed and applied to fit recently measured 12C(oc,y)160 data, for both ground-state transitions and cascade transitions through the 6·92 and 7 ·12 MeV levels. The correct treatment of the channel contributions is significant for the E2 cascade transitions. Consistent fits of the cascade and ground-state data suggest a value of the channel radius larger than those previously used, and consequently a value of the low-energy astrophysical S-factor appreciably larger than that adopted recently. 
