Revising Neutron Capture Gamma Ray Production

The gamma-ray spectrum produced by neutron induced reactions is utilized to reveal the microscopic features of the nucleus. The characteristics of the emitted photons are in important component in various modern applications, including the active interrogation technique used in planetary space science and oil well logging. The gamma-ray production information is compiled in evaluated nuclear data files, enabling a precise transport simulation and the success of material interrogation procedures. We are aware of deficiencies and gaps in accessible nuclear data libraries, as well as the need to enhance coincidence measurement applications. The deficiencies affect both secondary gamma emission and correlations between deexcitations and neutron emissions. One of our goals is to support the particle-gamma and gamma-gamma coincidence modeling by revising the gamma production data and formats within ENDF/B-VIII.0. Our efforts are intended to improve simulation performed with different transport codes e.g. MCNP, GEANT4, and Mercury. In this context, we are improving capture and inelastic gamma-ray libraries. In this work, we'll discuss a selection of refined thermal neutron capture gamma-ray spectrum for light nuclei. An in-line gamma cascade capability for both primary gammas and secondary cascade emissions will also be discussed.