Analysis of the unfolded γ energy spectrum based on Boosted-Gold algorithm

To obtain the characteristic information of unknown radionuclides by analyzing γ-energy spectrum a low-resolution detector, and to improve accuracy validity analysis overlapping weak peaks in spectrum, this paper we analyze NaI(Tl) detectors based on Boosted-Gold algorithm. A simulation model NaI(TI) detector is established using MCNPX, response matrix with dimension 201 × 200 obtained. The unfolding program developed spectra γ radioactive sources <sup>22</sup>Na, <sup>133</sup>Ba, <sup>152</sup>Eu are measured. Three groups constructed different γ-ray energy, energy differences (<inline-formula><tex-math id="M2">\begin{document}$ \Delta E $\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="10-20212429_M2.jpg"/><graphic xlink:href="10-20212429_M2.png"/></alternatives></inline-formula>) relative intensities simulation. Combining procedures, measured simulated unfolded. results analyzed nuclide standard characteristics from IAEA database. show that maximum error 2.17% (0.276 MeV for <sup>133</sup>Ba source) algorithm, deviation between unfolded intensity 0.197 (1.408 source). For can be accurately analyzed, maintains 0.01. When enhancement factor <i>p </i>≤ 14, algorithm beneficial quantitative γ-radionuclides. γ-rays greater than 10%, has better accuracy.