Cross sections and thermonuclear reaction rates for 41K(α, n)44Sc and 41K(α, p)44Ca

The cross sections of 41K(α, n)44Sc and 41K(α, p)44Ca have been measured in the bombarding energy ranges 3.0–8.0 MeV and 4.5–9.0 MeV, respectively. The cross sections have been compared with the results of statistical-model calculations made with global optical-model parameters, and also with a set of modified parameters. Thermonuclear reaction rates at temperatures important in silicon burning in evolving stars and supernovae have been calculated.