Abstract
The level matrix corresponding to the scrK-matrix parametrization of a resonant nuclear reaction is derived and applied to the spectrum of α particles emitted following β decay. The parametrized spectrum is fitted to data simultaneously with the E1 capture cross section of the (α,γO reaction and the p-wave phase shift of (α,αC. Our analysis shows that new measurements of the α spectrum from β decay could be used to significantly reduce the uncertainty of the (α,γO astrophysical S factor at 0.3 MeV. Various constraints on the parameters are analyzed and suggestions are made for further reducing the uncertainty in this crucial reaction rate.
- Received 1 April 1991
DOI:https://doi.org/10.1103/PhysRevC.44.2530
©1991 American Physical Society