Determination of Gaussian energy broadening parameters for organic scintillators

The aim of this work is to find the energy broadening parameters for organic scintillators as gamma detectors. A combined experimental and Monte Carlo method was used to determine the energy resolution curve for a 2'' × 2'' BC400 plastic scintillator detector in the energy range of 20 keV to ~ 1000 keV. The obtained parameters can be used to improve the Monte Carlo simulation of spectral behavior of the plastic scintillators. The detector spectral responses were simulated by MCNP4c code before and after applying the energy broadening parameters. The obtained results from the simulations showed a good agreement with experimental data after including the energy broadening parameters.