In this paper we deal with the problem of predicting a steady-state neutron spectrum in media arbitrary composition and geometry. The analytical calculations such are often too complex, if at all possible. We describe method Geant4-based Monte Carlo calculation medium containing fixed source. addition to spectrum, obtain snapshots evolution time, which may be thought as non-equilibrium spectra,...

Gamma spectroscopy is an analytic technique that identifies isotopes through gamma rays. Currently, widely used in several science fields, for instance, the study of hydrodynamics soils and other applications. Considering development computers, it has been developed Monte-Carlo simulation packages, order to estimate response detectors. This work aims develop a GEANT4 application full energy pea...

An update of the status of the simulation of hadronic shower shapes in Geant4 for high-energy calorimetry applications, relevant, in particular, for the experiments at the LHC, is shortly described. This report is a follow up of the studies presented in the note [1]. The main improvements are the inclusion of quasi-elastic scattering, in the high-energy string models, and Bertini cascade. We re...