Astroparticle Physics | 2019
New results for neutron radiative capture on 10Be at energies between 25.3 meV and 10.0 MeV
Abstract
Abstract Using the framework of the modified potential cluster model, we succeed in correctly describing the available experimental data for neutron radiative capture on 10Be total cross sections at low, astrophysical and thermal energies. Unlike our earlier work, the present calculations are based on new experimental data for Coulomb dissociation provided by Prof. T. Aumann and Prof. T. Nakamura. The energy range was extended from 10−5 to 104\u202fkeV for the theoretical cross sections, covering a range of temperatures between 0.01 and 10 T9. The role of the halo asymptotics of the extra-core neutron in 11Be was also taken into account. The parametrization of the reaction rates for the processes 10Be(n,γ0+1)11Be are obtained in an analytical form that is convenient for future calculations of different scenarios involving element synthesis in r-processes, as widely discussed in the context of boron and beryllium chains in our previous work.