Improved determination of the astrophysical S(0) factor of the (15)N(p,alpha)(12)C reaction
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We present new improved R matrix fits of direct data and indirect Trojan Horse data for the (15)N(p,alpha)(12)C reaction and provide a more accurate recommended value of S(0)=73.0 +/- 5.0 MeV b from direct Redder data [A. Redder , Z. Phys. A 305, 325 (1982)] and S(0)=70.0 +/- 13.5 MeV b from the Trojan Horse data [M. La Cognata , Phys. Rev. C 76, 065804 (2007)]. We also analyze a recent fit by Barker [F. C. Barker, Phys. Rev. C 78, 044611 (2008)] and demonstrate that when all the uncertainties are taken into account, our results overlap with his. We also provide a fit of the Trojan Horse data that properly takes into account finite residual energy resolution of the data.
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DepartmentPhysics and Astronomy
- Faculty Publications