Belarusian State University
Belarus
, Russian Federation
The paper considers an improved method for correcting the instrumental spectrum of a high purity germanium detector (HPGe detector) in the energy range (10–300 keV). The method uses a detector response matrix obtained by the Monte Carlo method, which allows to bring the appearance of the instrumental spectrum of the HPGe detector closer to its true shape by minimizing the influence of the detector response function. The main difference of this method from analogs is the additional deconvolution algorithm of the corrected spectrum, which makes it possible to obtain a smooth curve at the output.
Monte-Carlo modelling, spectrum correction, HPGe detector
1. U. Ankerhold, «Catalogue of X-ray spectra and their characteristic data – ISO and DIN radiation qualities, therapy and diagnoxtic qualities, unfiltered X-ray spectra» Physikalisch-Technische Bundesanstalt, PTB-Bcricht Dos 34, 2000.
2. ISO 4037-1: 2019 radiological protection – X and gamma reference radiation for calibrating dosimeters and doserate meters and for determining their response as a function of photon energy. Part 1: Radiation characteristics and production methods.
3. ISO 4037-1: 2019 radiological protection – X and gamma reference radiation for calibrating dosimeters and doserate meters and for determining their response as a function of photon energy. Part 2: Dosimetry for radiation protection over the energy ranges from 8 keV to 1.3 MeV and 4 MeV to 9 MeV.
4. S. Miyajima. «CdZnTe detector in diagnostic x-ray spectroscopy», Medical Physics., vol. 29, no. 7, pp. 1421-1429, 2002.
5. Zagorodnyuk A.A. Lukashevich R.V. Sen'kovskiy K.G. Novichenko A.V. Usovershenstvovannyy algoritm korrekcii apparaturnogo spektra CdTe detektora//Nelineynaya dinamika i prilozheniya: trudy XXVII Mezhdunarodnogo seminara. 2020. № 26. S. 445-458.
6. F. Li, Z. Gu, Li Ge, H. Li, X. Tang, X. Lang, B. Hu, «Review of recent gamma spectrum unfolding algorithms and their application», Results in Physics., vol. 13, pp. 1-12, 2019.
7. B.J. Giuseppe, B.K. Till, C.A. Francesco, W.C. Pik, E.Q. Salvatore, F.O. Alberto, F.M. Alfredo «Overview of the FLUKA code», Annals of Nuclear Energy., vol. 82, no. 1, pp. 10-18, 2015.
8. Zagorodnyuk A.A., Korneev S.V. Modelirovanie spektrov standartnyh obrazcov urana U3O8 SRM‑969, izmerennyh pri pomoschi poluprovodnikovogo germanievogo detektora//Izvestiya Nacional'noy akademii nauk Belarusi. Seriya fiziko-tehnicheskih nauk. 2017. № 3. S. 92-100
