Coupled-Channel Models of Direct-Semidirect Capture Via Giant-Dipole Resonances.

摘要

Low-energy nucleon capture rates are an important input to the astrophysical nucleosynthesis models, fueling a need for improved capture models that take into account various nucleon capture mechanisms. Besides nucleosynthesis, other applications need capture cross sections at higher energies, and therefore the entire spectrum of captures is desirable. Usually, capture mechanisms are divided into three broad categories: 1) Direct capture, 2) Semi-direct capture, and 3) Statistical or Compound capture.