Study on a peak shape fitting model for the analysis of alpha-particle spectra

Fabrizio Ambrosino

doi:10.1016/j.apradiso.2020.109090

Study on a peak shape fitting model for the analysis of alpha-particle spectra

Appl Radiat Isot. 2020 May:159:109090. doi: 10.1016/j.apradiso.2020.109090. Epub 2020 Feb 20.

Author

Fabrizio Ambrosino¹

Affiliation

¹ Department of Mathematics and Physics, University of Campania "Luigi Vanvitelli", Viale Lincoln 5, 81100, Caserta, Italy; National Institute for Nuclear Physics (INFN), Branch of Naples, via Cinthia 21, 80126, Napoli, Italy; Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519, Prague, Czech Republic. Electronic address: fabrizio.ambrosino@unicampania.it.

PMID: 32250764
DOI: 10.1016/j.apradiso.2020.109090

Abstract

In this study it is developed a model for the detailed and automatic study of the alpha-particle spectra coming from detection systems. The fitting of a typical shape of the alpha peak is performed by a Gaussian function for the right side of the peak and a sum of two Gaussian functions for its left tail. The model takes into account the entire spectrum background and, particular attention is posed to the analysis of overlapped peaks, background noise and peaks with low statistic counting. The effectiveness of the proposed model is supported by several tests.

Keywords: Alpha-particle spectrometry; Peak shape function; Spectral deconvolution; Spectrum analysis.