A modelling of HPGe detectors was performed through simulation with the MCNP5 Monte Carlo code. The simulation results concerning the values of the main physical parameters of the detector are in most cases different from those provided by the manufacturer. The use of “single-line” sources allows us to suitably modify the parameter values used in the detector model. For a detector model, the simulation assesses the distribution of photopeak and total efficiency for point sources, whereas for extended sources a control volume approach allows us to determine elementary efficiency behaviours. An integration of elementary efficiencies over the entire sample volume allows us to evaluate global efficiency.
MAUROTTO, A., RIZZO, S., TOMARCHIO, E. (2008). MCNP5 MODELLING OF HPGE DETECTORS FOR EFFICIENCY AND COINCIDENCE SUMMING CORRECTION EVALUATIONS IN GAMMA-RAY SPECTROMETRY.. In 4 TH CHERNE WORKSHOP: COOPERATION FOR HIGHER EDUCATION ON RADIOLOGICAL AND NUCLEAR ENGINEERING. (pp.1-4).
MCNP5 MODELLING OF HPGE DETECTORS FOR EFFICIENCY AND COINCIDENCE SUMMING CORRECTION EVALUATIONS IN GAMMA-RAY SPECTROMETRY.
RIZZO, Salvatore;TOMARCHIO, Elio Angelo
2008-01-01
Abstract
A modelling of HPGe detectors was performed through simulation with the MCNP5 Monte Carlo code. The simulation results concerning the values of the main physical parameters of the detector are in most cases different from those provided by the manufacturer. The use of “single-line” sources allows us to suitably modify the parameter values used in the detector model. For a detector model, the simulation assesses the distribution of photopeak and total efficiency for point sources, whereas for extended sources a control volume approach allows us to determine elementary efficiency behaviours. An integration of elementary efficiencies over the entire sample volume allows us to evaluate global efficiency.
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