A new background subtraction method for energy dispersive X-ray fluorescence spectra using a cubic spline interpolation

A new method is presented to subtract the background from the energy dispersive X-ray fluorescence (EDXRF) spectrum using a cubic spline interpolation. To accurately obtain interpolation nodes, a smooth fitting and a set of discriminant formulations were adopted. From these interpolation nodes, the...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2015-03, Vol.775, p.12-14
Hauptverfasser: Yi, Longtao, Liu, Zhiguo, Wang, Kai, Chen, Man, Peng, Shiqi, Zhao, Weigang, He, Jialin, Zhao, Guangcui
Format: Artikel
Sprache:eng
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Zusammenfassung:A new method is presented to subtract the background from the energy dispersive X-ray fluorescence (EDXRF) spectrum using a cubic spline interpolation. To accurately obtain interpolation nodes, a smooth fitting and a set of discriminant formulations were adopted. From these interpolation nodes, the background is estimated by a calculated cubic spline function. The method has been tested on spectra measured from a coin and an oil painting using a confocal MXRF setup. In addition, the method has been tested on an existing sample spectrum. The result confirms that the method can properly subtract the background.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2014.11.100