Recent Measurement and Theoretical Analysis for the Elastic Scattering of the 15N+11B System

The elastic scattering angular distribution (AD) for the N-15 + B-11 system at E-lab(N-15) = 22.5 MeV has been measured at the DC-60 cyclotron located at INP RK. In addition to our newly measured data, we have reanalyzed the previously measured N-15 + B-11 cross sections at E-lab = 43 MeV using a range of phenomenological and microscopic potentials. The measured AD at 22.5 MeV did not exhibit a significant increase in differential cross sections (DCs) at backward angles (theta > 90 degrees), similar to the previously measured data at E-lab = 18.75 MeV and contrary to the measured data at 43 MeV. The measured DC data at backward angles are fairly described using the distorted wave Born approximation (DWBA) method. The alpha-spectroscopic amplitude (SA) for the N-15 -> B-11 + alpha configuration was extracted and compared to the available one in the literature.