introduction range and diffusion of positron-emitting radiopharmaceuticals are important parameters for image resolution in positron emission tomography (pet). in this study, geant4 toolkit was applied to study positron diffusion in soft tissues with and without a magnetic field for six commonly used isotopes in pet imaging including 11c, 13n, 15o, 18f, 68ga, and 82rb. materials and methods gea...

We study the spatial distributions of β-activity produced by therapeutic beams of He and C ions in various tissue-like materials. The calculations were performed within a Monte Carlo model for Heavy-Ion Therapy (MCHIT) based on the GEANT4 toolkit. The contributions from positronemitting nuclei with T1/2 > 10 s, namely 10,11C, N, 14,15O, 17,18F and P, were calculated and compared with experiment...

We present the package for simulation of DM (Dark Matter) particles in fixed target experiments. The most convenient way this (and only possible case beam-dump) is to simulate it framework program tracing experimental setup. One popular such programs Geant4. Specifically, includes processes production via electron and muon bremsstrahlung off nuclei, resonant in-flight positron annihilation on a...

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...