JAEA-Conf 2011-002 - 日本原子力研究開発機構

JAEA-Conf 2011-002
reactions. Figure 1 shows the cross sections as a function of outgoing neutron energy and the
contribution of each reaction mechanism.
Fig. 1. Scheme of the outgoing particle spectrum.
2-1. Nuclear reaction models in TALYS code
TALYS is a comprehensive computer code system for the analysis and prediction of nuclear
reactions like EMPIE code [2]. This code has been used for the complete and accurate analysis of
basic experimental or to evaluate nuclear data for applications. It provides a simulation of nuclear
reactions which involve neutrons, protons, deuterons, tritons, gamma-rays, 3 He- and alpha-particles as
projectiles and ejectiles, in the incident energy range from 1 keV to 200 MeV and for target nuclides
of mass between 12 and 239. It involves various nuclear models such as level density, the optical
model, compound reactions by Hauser-Feshbach statistical model theory, pre-equilibrium processes by
two-component exciton model theory and fission. It calculates total and partial cross sections, energy
spectrum angular distributions, double-differential spectra, residual production cross sections and
recoils. In addition, all the calculated data can be stored in files separately. An overview of the nuclear
models that are implemented in TALYS is shown Figure 2.
Fig. 2. Nuclear models in TALYS.