The airborne survey applied to radioactivity measurements and g-ray spectroscopy is affected by sized corrections due to the surface topology and g absorption in air. In addiction to that, the efficiency calibration of the system can’t be made during the flight, but only at the ground surface. Therefore a cross check of the evaluated parameters used in the spectra analysis with simulations is required. The simulations should be carefully tested by comparing them with the experimental measurements and, only after a careful check of consistency, they can be used in order to improve the analysis of the experiments. To this purpose we have developed a tool to deduce the effect of the air on g rays emitted by the soil ground and to reconstruct the spectra acquired by the detecting system at different altitudes. The software tool uses a Monte Carlo (MC) code based on GEANT4.
Monte Carlo simulation to describe airborne survey effects.
FIORENTINI, Giovanni;MANTOVANI, Fabio;XHIXHA, Gerti;
2013
Abstract
The airborne survey applied to radioactivity measurements and g-ray spectroscopy is affected by sized corrections due to the surface topology and g absorption in air. In addiction to that, the efficiency calibration of the system can’t be made during the flight, but only at the ground surface. Therefore a cross check of the evaluated parameters used in the spectra analysis with simulations is required. The simulations should be carefully tested by comparing them with the experimental measurements and, only after a careful check of consistency, they can be used in order to improve the analysis of the experiments. To this purpose we have developed a tool to deduce the effect of the air on g rays emitted by the soil ground and to reconstruct the spectra acquired by the detecting system at different altitudes. The software tool uses a Monte Carlo (MC) code based on GEANT4.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
