An analytical approach for treating background in spectral analysis measurements

A method of determining the spectral shape of background radiation present in experimental spectra via a mathematical approach is presented. Elements of interest will be subtracted from an experimental spectrum using the linear correlation coefficient across a characteristic peak to determine their...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2015-11, Vol.116, p.87-91
Main Authors: Miller, Ian, Holmes, Thomas W., Gardner, Robin P.
Format: Article
Language:English
Subjects:
Analytical background approach
Approximation
Background radiation
Correlation coefficients
Least squares method
Libraries
Mathematical analysis
NUCLEAR PHYSICS AND RADIATION PHYSICS
Spectra
Spectral background
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Summary:A method of determining the spectral shape of background radiation present in experimental spectra via a mathematical approach is presented. Elements of interest will be subtracted from an experimental spectrum using the linear correlation coefficient across a characteristic peak to determine their contribution. Once all elements of interest are removed, the remainder of the experimental spectrum should represent an approximation of the background. This approximation can then be used in conjunction with library least-squares to determine the background and elemental contributions to the unknown spectrum. •An approach for determining the background radiation spectral library is proposed.•The libraries of isotopes of interest will be subtracted from the unknown spectrum.•The linear correlation coefficient was used as a metric for this subtraction.•The background library was then used in a LLS fit to determine spectral contribution.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2015.01.018