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Application of Fireworks Algorithm in Gamma-Ray Spectrum Fitting for Radioisotope Identification

Miltiadis Alamaniotis, Chan K. Choi, Lefteri H. Tsoukalas

Source Title: International Journal of Swarm Intelligence Research (IJSIR)6(2)

ISSN: 1947-9263|EISSN: 1947-9271|EISBN13: 9781466678286|DOI: 10.4018/IJSIR.2015040105

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MLA

Alamaniotis, Miltiadis, et al. "Application of Fireworks Algorithm in Gamma-Ray Spectrum Fitting for Radioisotope Identification." IJSIR vol.6, no.2 2015: pp.102-125. http://doi.org/10.4018/IJSIR.2015040105

APA

Alamaniotis, M., Choi, C. K., & Tsoukalas, L. H. (2015). Application of Fireworks Algorithm in Gamma-Ray Spectrum Fitting for Radioisotope Identification. International Journal of Swarm Intelligence Research (IJSIR), 6(2), 102-125. http://doi.org/10.4018/IJSIR.2015040105

Chicago

Alamaniotis, Miltiadis, Chan K. Choi, and Lefteri H. Tsoukalas. "Application of Fireworks Algorithm in Gamma-Ray Spectrum Fitting for Radioisotope Identification," International Journal of Swarm Intelligence Research (IJSIR) 6, no.2: 102-125. http://doi.org/10.4018/IJSIR.2015040105

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Abstract

Identification of radioisotopic signature patterns in gamma-ray spectra is of paramount importance in various applications of gamma spectroscopy. Therefore, there are several active research efforts to develop accurate and precise methods to perform automated spectroscopic analysis and subsequently recognize gamma-ray signatures. In this work, the authors present a new method for radioisotope identification in gamma-ray spectra obtained with a low resolution radiation detector. The method fits the obtained spectrum with a linear combination of known template signature patterns. Coefficients of the linear combination are evaluated by computing the solution of a single objective optimization problem, whose objective is the Theil-1 inequality coefficient. Optimization of the problem is performed by the Fireworks Algorithm, which identifies a set of coefficients that minimize the Theil-1 value. The computed coefficients are statistically tested for being significantly different than zero or not, and if at least one is found to be zero then the Fireworks Algorithm is used to reiterate fitting using the non-zero templates. Fitting iterations are continued up to the point that no linear coefficients are found to be zero. The output of the method is a list that contains the radioisotopes that have been identified in the measured spectrum. The method is tested on a set of both simulated and real experimental gamma-ray spectra comprised of a variety of isotopes, and compared to a multiple linear regression fitting, and genetic algorithm Theil-1 based fitting. Results demonstrate the potentiality of the Fireworks Algorithm based method, expressed as higher accuracy and similar precision over the other two tested methodologies for radioisotope signature pattern identification in the framework of gamma-ray spectrum fitting.

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Application of Fireworks Algorithm in Gamma-Ray Spectrum Fitting for Radioisotope Identification

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