Electrodisintegration of 16O and determination of astrophysical S-factors of the inverse reaction

Abstract

Abstract We performed Monte Carlo calculations in a simple model that relates the radiative capture and electrodisintegration reactions and showed that by using a windowless gas jet target and modern energy-recovery linear accelerators (ERLs, CBETA at Cornell, MESA at Mainz, ARIEL e-linac at TRIUMF) to reach high luminosity, a high precision measurement of the electrodisintegration of the 16 O nucleus would provide a method to determine the rate of the α on 12 C radiative capture with a superb statistical precision compared to existing data. The calculations were done for the beam energies of 30, 50 and 114 MeV and show a significant reduction in terms of statistical uncertainties for the energy range E c.m. < 2 MeV. The 114 MeV setting has the smallest statistical uncertainty, but at the same time the calculations for this beam energy setting were performed the furthest away from the real photon limit. The feasibility of this simple model still needs to be studied experimentally. This could be done with an experiment focused at Ec.m. > 2 MeV region, where the cross section is much larger.