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Your search keyword '"Done L"' showing total 2 results
Start Over Author "Done L" Topic gamma spectrometry
2 results on '"Done L"'

1. Characterization Studies of Radioactive Waste Drums Using High Resolution Gamma Spectrometric Systems.

Author

Toma, M., Cristache, C., Done, L., Dragolici, F., and Sima, O.

Subjects
RADIOACTIVE wastes, RADIOACTIVE substances, NUCLEAR engineering, MONTE Carlo method, SPECTROMETRY
Abstract

The problem of radioactive waste has become a critical issue in the country and worldwide. The radioactive waste containers, containing different radioactive materials, have to be characterized before their final disposal. Destructive methods, although being the most precise, are also the most expensive and not the easiest ones from the radioprotection point of view. In this situation, high resolution gamma spectrometry proved to be a reliable method for the non destructive assay method. However, the non-homogenous composition of the radioactive waste inside the drum makes the quantitative characterization of the radioactive waste drum a difficult task. Experimental studies and computed results, combined with Monte Carlo simulations using GESPECOR, are presented in this paper as a possibility to achieve this task. [ABSTRACT FROM AUTHOR]

Published
2010
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2. Calibrating GESPECOR model of computing the full-energy peak efficiency of coaxial high-purity germanium detectors by Monte Carlo simulation.

Author

Gurau, D., Stanga, D., Done, L., Sima, O., and Ilie, G.

Subjects
*GERMANIUM detectors, *GERMANIUM radiation detectors, *DETECTORS
Abstract

In this work, a classical approach was used for calibrating the GESPECOR detector model for computing the full-energy peak efficiency of p-type coaxial HPGe detectors that is based on the use of linear least squares optimization. The key element of the work is the multiplicative model developed for approximating the values of the full-energy peak efficiency provided by GESPECOR code. It was linearized using the logarithmic transformation to allow an easy use of the linear least squares optimization. A procedure was also developed to estimate the optimal values of the parameters, describing the p-type coaxial HPGe detectors. Its application to a Canberra detector GC3018 showed that it is possible to determine accurate values of the full-energy peak efficiency computed by GESPECOR code using the optimized parameter values. • A classical approach for calibrating the GESPECOR model is described. • A multiplicative model approximates the full-energy peak efficiency given by GESPECOR. • Model parameters are optimized using a linear least squares approach. • A simple calibration procedure was developed. • Accurate values of the full-energy peak efficiency are obtained using the optimal parameters. [ABSTRACT FROM AUTHOR]

Published
2024
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