ALFITeX: a new code for the deconvolution of complex alpha-particle spectra

作者：Caro Marroyo B; Martin Sanchez A; Jurado Vargas M

来源：Journal of Radioanalytical and Nuclear Chemistry, 2013, 296(3): 1247-1252.

DOI：10.1007/s10967-013-2428-8

• Alpha-particle spectrometry
• Deconvolution
• Fitting code
• Emission probabilities

A new code for the deconvolution of complex alpha-particle spectra has been developed. The ALFITeX code is written in Visual Basic for Microsoft Office Excel 2010 spreadsheets, incorporating several features aimed at making it a fast, robust and useful tool with a user-friendly interface. The deconvolution procedure is based on the Levenberg-Marquardt algorithm, with the curve fitting the experimental data being the mathematical function formed by the convolution of a Gaussian with two left-handed exponentials in the low-energy-tail region. The code also includes the capability of fitting a possible constant background contribution. The application of the singular value decomposition method for matrix inversion permits the fit of any kind of alpha-particle spectra, even those presenting singularities or an ill-conditioned curvature matrix. ALFITeX has been checked with its application to the deconvolution and the calculation of the alpha-particle emission probabilities of Pu-239, Am-241 and U-235.

• 出版日期2013-6