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Updated: May 12, 2026

Measurements of Soil Carbon by Neutron-Gamma Analysis in Static and Scanning Modes
Published on: August 24, 2017
Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements
Alecsandru Chirosca1, Rares Suvaila, Octavian Sima
1Physics Department, University of Bucharest, P.O. Box MG-11, 077125 Magurele, Romania.
Abstract:
The application of GEANT 4 and GESPECOR Monte Carlo simulation codes for efficiency calibration of in situ gamma-ray spectrometry was studied. The long computing time required by GEANT 4 prevents its use in routine simulations. Due to the application of variance reduction techniques, GESPECOR is much faster. In this code specific procedures for incorporating the depth profile of the activity were implemented. In addition procedures for evaluating the effect of non-homogeneity of the source were developed. The code was validated by comparison with test simulations carried out with GEANT 4 and by comparison with published results.
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