Elastic scattering angular distributions of the radioactive weakly bound 7 Be on 27 Al have been measured at energies near the Coulomb barrier. The interaction optical potential is investigated by using different potentials. Total reaction cross sections have also been obtained.

Type-I x-ray bursts can reveal the properties of an accreting neutron star system when compared with astrophysics model calculations. However, model results are sensitive to a handful of uncertain nuclear reaction rates, such as 22 Mgðα;pÞ. We report the first direct measurement of 22 Mgðα;pÞ, performed with the Active Target Time Projection Chamber. The corresponding astrophysical reaction rate is orders of magnitude larger than determined from a previous indirect measurement in a broad temperature range. Our new measurement suggests a less-compact neutron star in the source GS1826-24.

Angular distributions for the elastic scattering of 8 B, 7 Be and 6 Li on 12 C target have been measured at E lab = 25.8 MeV, 18.8 MeV and 12.3 MeV, respectively. The analyses of these angular distributions have been performed in terms of the optical model using Woods-Saxon and double-folding type potentials. The effect of breakup in the elastic scattering of 8 B + 12 C is investigated by performing coupled-channels calculations with the Continuum Discretized Coupled Channel (CDCC) method and cluster-model folding potentials. Total reaction cross sections were deduced from the elastic scattering analysis and compared with published data on elastic scattering of other weakly-and tightly-bound projectiles on 12 C, as a function of energy. With the exception of 4 He and 16 O, the data can be described using a universal function for the reduced cross sections.