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A new method for determination of concentration profile in a transport column by gamma spectroscopy combined with genetic algorithm
, Article Progress in Nuclear Energy ; Volume 124 , 2020 ; Kazemi, Z ; Samadfam, M ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
A non-collimated gamma spectroscopy with fewer sampling (counting) and shorter sampling periods is developed and used to estimate the concentration profile of the radiotracers within the column. In this method, the radiotracer activity in the whole column is measured in a few different positions of the detector and then, by using an appropriate advection-dispersion model and the genetic algorithm, the concentration profile within the column is constructed. The concentration profile obtained by the new method fits very well to the experimentally obtained thin-section scanning results with RMSE less than 0.046. The uniqueness of the concentration profile obtained by the method was confirmed by...