Simulation and analysis of ¹³N+p elastic resonance scattering

The ¹³N+p elastic resonance scattering has been studied at the secondary radioactive beam facility of CIAE in inverse kinematics via a thick-target method. The excitation function for the ¹³N(p,p) scattering was obtained in the energy interval of E_cm ≈ 0.5–3.2 MeV with a ¹³N secondary beam of (47.8±1.5) MeV. Careful analysis of the secondary beam components and extensive Monte–Carlo simulations enable the resolution of the experimental proton spectra. The resonance parameters for five low-lying levels in ¹⁴O were deduced by R-matrix fitting calculations with MULTI7 and SAMMY-M6-BETA. The present results show general agreement with those from a recent similar work, and thus confirm the observation of a new 0⁻ level at 5.7 MeV in ¹⁴O with an improved width of 400(45) keV.