Astrophysical S(E)-factor of the $^{15}$N(p,$\alpha )^{12}$C reaction at sub-Coulomb energies via the Trojan-horse method

POSTER

Abstract

The low-energy bare-nucleus cross section for $^{15}$N(p,$\alpha )^{12}$C is extended by means of the Trojan-horse method applied to the $^{2}$H($^{15}$N,$\alpha ^{12}$C)n reaction at E$_{beam}$=60 MeV. The astrophysical S-factor is compared to the direct data in the same energy region. A fair agreement is found at low energies between 80 keV and 250 keV, while the low-energy behavior of the S-factor suggests a smaller rate than reported in literature. There is a larger discrepancy between the direct data and Trojan-horse data at high energy. Further study is needed to clarify the source of this error.

*This research was supported by NSF grant PHY463291-00001, the Texas A\&M Cyclotron Institute, and the Department of Energy.

Authors

  • C. Spitaleri

  • S. Cherubini

  • V. Crucilla

  • L. Lamia

  • R. Pizzone

  • Daniel Schmidt

    • Liberty University

  • M. La Cognata

  • S. Romano

  • A. Tumino

    • Dipartimento di Metodologie Fisiche e Chimiche per l'Ingegneria-Universita di Catania, Catania Italy \& Laboratori Nazionali del Sud-INFN, Catania

  • R. Tribble

  • L. Trache

  • Changbo Fu

  • V. Goldberg

  • A. Mukhamedzhanov

  • G. Tabacaru

    • Cyclotron Institute, Texas A\&M University, College Station, TX 77843, USA

  • S. Typel

    • GSI, Darmstadt, Germany

  • B. Irgaziev

    • 1GIK Institute of Engineering Sciences and Technology, Topi, District Swabi, N.W.F.P., Pakistan