194.1 keV resonance contribution on 17O(p,α)14N reaction rate using R matrix code

Recently, a new resonance at E Rlab =194.1 keV corresponding to a level in 18F at E x =(5789.8±0.3) keV has been observed for the first time. In view of these new parameters, we propose here to examine this reaction using a numerical code based on the R-matrix method to show its contribution to the 17O(p,α)14N reaction rates. We also study the cross section as well as the differential cross section of the 17O(p,α)14N reaction. It is found that this resonance predominates the reaction rates in all the range of the stellar temperature for classical novae explosions. Our results are in good agreement with those of a recent experimental study.