Advances in X-Ray Analysis: Volume 36 by Anthony J. Klimasara (auth.), John V. Gilfrich, Camden R.

By Anthony J. Klimasara (auth.), John V. Gilfrich, Camden R. Hubbard, Ron Jenkins, Deane K. Smith, Ting C. Huang, Michael R. James, Gerald R. Lachance, Paul K. Predecki (eds.)

Mathematical options in XRay Spectrometry: study within the Quantitative research of person debris by means of XRay Fluorescence Spectrometry (M. Lankosz et al.). Analysis of sunshine parts via XRay Spectrometry: XRFA of Carbon in Steels (F. Weber et al.). XRS innovations and Instrumentation: Diffraction Peaks in XRay Spectroscopy (R.G.Tissot, R.P. Goehner). OnLine, commercial, and different purposes of XRS: program of XRF within the Aluminum (F.R. Feret). XRay Characterization of skinny Films: Grazing occurrence XRay Characterization of fabrics (D.K. Bowen, M. Wormington). WholePattern becoming, part research by way of Diffraction Methods: part id utilizing WholePattern Matching (D.K. Smith et al.). Polymer functions of XRD. HighTemperature and NonAmbient functions of XRD. pressure and pressure selection by means of Diffraction tools, height Broadening research. XRD thoughts and Instrumentation. seventy one extra articles. Index.

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The summation indicated for each matrix element is performed over the spectral region(s) under consideration. For example, if the entire observed spectrum is being analyzed, Rl would be the sum of the counts in each channel of the entire filtered spectrum of reference number 1. Similarly, Rl"R2 would be given by the product of the counts in each channel in reference 1 and reference 2 summed over the entire spectrum. ) of each reference spectrum present in the optimum fit to the observed spectrum.

Geological Survey OpenFile Report 92-13. QUANTITATIVE XRFA OF LIGHT ELEMENTS BY THE FUNDAMENTAL PARAMETER METHOD Michael Mantler Institute of Applied and Technical Physics Technical University Vienna, Austria SUMMARY Analysis of light elements, such as C, B, and Be, differs from analysis of heavier elements by the low fluorescent yields as well as by the wide gap between their absorption edge energies and the low energy limit of the available tube-photons. Because of the fact that the (relatively large) difference between these energies is transferred to the photoelectron after an ionization event, additional excitations of light elements are very likely to occur.

M. LANKOSZ 13 ET AL. lml Figure lc. Maximum relative intensities of strontium Ka line vs. spherical particle diameter. Solid line is a Monte Carlo simulation. obvious systematic differences. These differences are about +9% for calcium, about -5% for zinc, and about -35% for strontium. The reasons for these discrepancies between Monte Carlo simulations and experimental results are not clear and are still being investigated. However, it seems probable that one cause lies in the different measurement geometries of the spherical particles compared to the flat, infinitely thick, reference sample.

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