A method for automatic identification of peaks in the presence of background and its application to spectrum analysis

doi:10.1016/0029-554X(67)90058-4

Nuclear Instruments and Methods

Volume 50, Issue 2, 1 May 1967, Pages 309-320

https://doi.org/10.1016/0029-554X(67)90058-4 Get rights and content

Abstract

A computer method is described that permits automatic analysis of high resolution spectra, provided that the data are stored in a way suitable for computer input (i.e., on magnetic or paper tape). The program reads the entire spectrum, locates the peaks and determines their amplitudes, centroids and widths by least squares fitting. Doublets are handled automatically.

References (3)

Application of Computers to nuclear and radiochemistry
National Academy of Sciences,National Research Council — NAS-NS 3107
(1962)

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The inter-comparison is focused on the calculation of peak areas. Both analysis methods use the Mariscotti peak search algorithm (Mariscotti, 1967) and subsequently the peaks are fitted by a Gaussian function together with a polynomial or a step function for the background. In a second step the results from the calculation of activities are compared.
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The optimum windows are found to be ±1.4 FWHM, [μ − 24Chs, μ + 24Chs] using the second-difference peak search method (Aucott et al., 2014). However, the optimum windows according to Mariscotti (1967) is smoothed channel numbers of generalized second-difference function rather than an optimum counting window. The chosen window 2 keV and the FWHM 1.9 keV at 661 keV (Mitchell et al., 2009) gave the region-of-interest ROI of an isotope's relevant photo peaks as 1.05 FWHM.
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^☆: Work performed under the auspices of the U.S. Atomic Energy Commission.

^∗∗: Permanent address: Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.

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A method for automatic identification of peaks in the presence of background and its application to spectrum analysis☆

Abstract

Application of Computers to nuclear and radiochemistry

National Academy of Sciences,National Research Council — NAS-NS 3107