Chirosca Alecsandru, Suvaila Rares, Sima Octavian
Physics Department, University of Bucharest, P.O. Box MG-11, 077125 Magurele, Romania.
Appl Radiat Isot. 2013 Nov;81:87-91. doi: 10.1016/j.apradiso.2013.03.015. Epub 2013 Mar 16.
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.
研究了GEANT 4和GESPECOR蒙特卡罗模拟代码在现场伽马射线能谱效率校准中的应用。GEANT 4所需的计算时间长，阻碍了其在常规模拟中的使用。由于应用了方差缩减技术，GESPECOR的速度要快得多。在该代码中，实现了纳入活度深度分布的特定程序。此外，还开发了评估源非均匀性影响的程序。通过与用GEANT 4进行的测试模拟以及与已发表结果进行比较，对该代码进行了验证。
