Direct measurement of the 11C(α, p)14N stellar reaction at CRIB

The first direct measurement of the 11C(α, p)14N reaction cross section of astrophysical interest has been performed for the center‐of‐mass energies from 1 to 4.5 MeV with the CRIB (Center for Nuclear Study Radioactive Ion Beam separator). We successfully distinguished the transition to the ground state of 14N and that to the second excited state with a comparable yield. The resonant shapes in the preliminary excitation function for the ground state transition have been confirmed to be consistent with the ones from the time‐reversal reaction data of previous experiments.