The astrophysical reactionsC12(α,γ)16O andBe7(p,γ)8B and Coulomb dissociation experiments

The use of the Coulomb dissociation method to obtain the cross sections for the radiative capture reactions ${}_{}{}^3{}_{}{}^{}\mathrm{C}$(α,γ) ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$(p,γ) ${}_{}{}^8{}_{}{}^{}\mathrm{B}$ is investigated. The contribution of the nuclear interaction to the breakup is included. Due to the low binding of the proton in ${}_{}{}^8{}_{}{}^{}\mathrm{B}$ the second reaction is dominated by Coulomb breakup. The effects of Coulomb reacceleration of the fragments and of the excitation of states in the fragments are also studied. Ideal kinematical conditions for the experiments are investigated.