Techniques for Handling Channeling in High Resolution Fourier Transform Spectra Recorded with Synchrotron Sources

Journal Article · Fri Oct 29 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3517544· OSTI ID:21428677

Ibrahim, Amr; PredoiCross, Adriana; Teillet, P M ^[1]

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1. Department of Physics and Astronomy, University of Lethbridge. 4401 University Dr. W., Lethbridge T1K 3M4, Alberta (Canada)

Seven different techniques in dealing the problem of channel spectra in Fourier transform Spectroscopy utilizing synchrotron source were examined and compared. Five of these techniques deal with the artifacts (spikes) in the recorded interferogram which in turn result in channel spectra within the spectral domain. Such interferogram editing method include replacing these spikes with zeros, straight line, fitted polynomial curve, rescaled spike and spike reduced with Gauss Function. Another two techniques try to target this issue in the spectral domain instead by either generating a synthetic background simulating the channels or measuring the channels parameters (amplitude, spacing and phase) to use in the spectral fitting program. Results showed spectral domain techniques produces higher quality results in terms of signal to noise and fitting residual. The effect of each method on the line parameters such as position, intensity are air broadening are also measured and discussed.

• OSTI ID: 21428677
• Journal Information: AIP Conference Proceedings, Vol. 1290, Issue 1; Conference: 20. international conference on spectral line shapes, St. John's (Canada), 6-11 Jun 2010; Other Information: DOI: 10.1063/1.3517544; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
AMPLITUDES
CHANNELING
FOURIER TRANSFORMATION
GAUSS FUNCTION
POLYNOMIALS
RESOLUTION
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
FUNCTIONS
INTEGRAL TRANSFORMATIONS
RADIATION SOURCES
RADIATIONS
SPECTRA
SPECTROSCOPY
TRANSFORMATIONS