Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements

Alecsandru Chirosca; Rares Suvaila; Octavian Sima

doi:10.1016/j.apradiso.2013.03.015

Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements

Appl Radiat Isot. 2013 Nov:81:87-91. doi: 10.1016/j.apradiso.2013.03.015. Epub 2013 Mar 16.

Authors

Alecsandru Chirosca¹, Rares Suvaila, Octavian Sima

Affiliation

¹ Physics Department, University of Bucharest, P.O. Box MG-11, 077125 Magurele, Romania.

PMID: 23566809
DOI: 10.1016/j.apradiso.2013.03.015

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.

Keywords: Activity distribution; Efficiency calibration; In situ gamma-ray spectrometry; Monte Carlo simulation.

MeSH terms

Algorithms*
Computer Simulation
Models, Statistical*
Monte Carlo Method*
Radiation Dosage
Scattering, Radiation
Software*
Spectrometry, Gamma / methods*