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In a recent work, the cross section measurement of the 64Zn(p,alpha)61Cureaction was used to prove that the standard alpha-nucleus optical potentialsused in astrophysical network calculation fail to reproduce the experimentaldata at energies relevant for heavy element nucleosynthesis. In the presentpaper the analysis of the obtained experimental data is continued by comparingthe results with the predictions using different parameters. It is shown thatthe recently suggested modification of the standard optical potential leads toa better description of the data.

Nuclear physics uncertainties of the astrophysical gamma-process studied through the 64Zn(p,alpha)61Cu and 64Zn(p,gamma)65Ga reactions