Impact of low-energy multipole excitations and pygmy resonances on radiative nucleon captures
1 Frankfurt Institute for Advanced Studies (FIAS), D-60438 Frankfurt am Main, Germany
2 Institut für Theoretische Physik, Universität Giessen, 35390 Giessen, Germany
3 Institute for Nuclear Research and Nuclear Energy, 1784 Sofia, Bulgaria
4 GSI Darmstadt, Darmstadt, Germany
a e-mail: email@example.com
Published online: 19 January 2016
Nuclear structure theory is considered in the framework of the development of a microscopic model for nucleon-capture astrophysical implementations. In particular, microscopically obtained strength functions from a theoretical method incorporating density functional theory and quasiparticle-phonon model are used as an input in a statistical reaction model. The approach is applied in systematic investigations of the impact of low-energy multipole excitations and pygmy resonances on dipole photoabsorption and radiative neutronand proton-capture cross sections of key s- and r-process nuclei which is discussed in comparison with the experiment. For the cases of the short-lived isotopes 89Zr and 91Mo theoretical predictions are made.
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