The 11B(p,α)8Be → α + α and the 11B(α,α)11B Reactions at Energies Below 5.4 MeV

• DOI: 10.1007/s10894-011-9473-5
• Publication Date: 2011-10-20T10:41:07Z
• Authors: M. C. Spraker; M. W. Ahmed; M. A. Blackston; N. Brown; R. H. France; S. S. Henshaw; B. A. Perdue; R. M. Prior; P.-N. Seo; S. Stave; H. R. Weller
• Keywords: Nuclear and High Energy Physics; Nuclear Energy and Engineering; 0103 physical sciences; 01 natural sciences; 7. Clean energy

Measurements of the absolute cross section and angular distributions for the $$^{11} \hbox{B}(p,\alpha)^{8}{\text{Be}}\rightarrow\alpha+\alpha$$ and the 11B(α,α)11B reactions have been performed from 0.15 to 3.8 MeV for the 11B(p,α) study and from 2 to 5.4 MeV for the 11B(α,α) reaction. The absolute cross sections are presented in terms of the total number of α-particles detected in order to avoid uncertainties due to ambiguities in the number of alpha particles emitted in the reaction at a particular energy. The angular distributions of the 11B(p,α)8Be(2+) reaction were fit to a Legendre polynomial expansion and the coefficients are presented. Finally, the 11B(α,α)11B data were fit in terms of phase shifts (ignoring the spin of the target), providing a convenient representation of the elastic cross section data between 2 and 5.4 MeV.