Relevant bibliographies by topics / Energy dispersive X-ray spectra

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  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'Energy dispersive X-ray spectra'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Energy dispersive X-ray spectra"

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Rémond, Guy. "Spectral Deconvolution of Wavelength Dispersive X-RAY Spectra." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 2 (1990): 112–13. http://dx.doi.org/10.1017/s0424820100134156.

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X-ray peaks frequently exhibit asymmetrical shape which may result either from the mechanisms of generation of X-ray photons or from instrumental spectral distortions. As a result a non-proportionality may occur between the observed and the true intensities of the analyzed emissions. An analytical description of the shape of an X-ray line must be used in a least-squares fitting procedure in order to derive the relative intensities from experimental spectra. The available models will be discussed taking into account the analyzed energy domain and the energy resolution of the spectrometer respectively.For the case of wavelength dispersive X-ray spectrometry, Remond et al. (1) showed that the shape of an L emission peak P(λ), analyzed by means of a LiF (200) monochromator (≈ 0.1nm < λ < ≈ 0.3nm) was correctly described by the use of equation [1].[1]where P1(λ) and P2(λ) are a Gaussian and a Lorentzian distribution respectively, centered at the same wavelength, with the same amplitude and half-width at half-maximum Γ, (HWHM) and in relative proportion k.
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Yager, D. B., and J. E. Quick. "SUPERXAP- A Personal-Computer-Based Program for Energy-Dispersive X-Ray Spectra Analysis." Advances in X-ray Analysis 36 (1992): 17–25. http://dx.doi.org/10.1154/s0376030800018590.

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AbstractSUPERXAP (Super X-ray Analysis Program) enables IBM-compatible personal computers to analyze energy-dispersive spectra using least-squares spectral deconvolution. The program corrects for instrument drift, background, peak overlap, and matrix effects. Pull down menus provide 24 subroutines and functions, that allow spectra to be transferred, stored, viewed, manipulated, and analyzed. Spectral peaks can be identified manually or automatically with color-coded K, L or M lines. Working curves are developed using an interactive routine that creates standard files by least-squares fitting of peak intensities to known elemental abundances. Elemental abundances in unknowns may be determined in a variety of ways including on-line analysis of spectra as they are generated by an energy-dispersive detector and by batch analyses of spectra stored on disk. Standard deviation, based on counting statistics, is reported for each element in each analysis. Written in QuickBASIC 4.5 for interface with a KEVEX 7000 radioactive-source x-ray fluorescence analyzer, SUPERXAP could be adapted, with minor modification, to accept and analyze data from other instruments that produce energy-dispersive spectra.
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Aiginger, H., M. Benedikt, and R. Görgl. "Energy Dispersive Measurement of X-Ray Tube Spectra." Advances in X-ray Analysis 39 (1995): 137–47. http://dx.doi.org/10.1154/s0376030800022540.

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A method for measuring spectral distributions of x-ray tubes directly with a solid-state detector is presented. Different anode materials (chromium, molybdenum, rhodium and tungsten) have been measured. Results for various applied voltages and take-off angles have been obtained.
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Wollman, D. A., Dale E. Newbury, G. C. Hilton, et al. "Microcalorimeter EDS Measurements of Chemical Shifts in Fe Compounds." Microscopy and Microanalysis 4, S2 (1998): 196–97. http://dx.doi.org/10.1017/s1431927600021103.

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We report measurements of chemical shifts in the Fe-L x-ray lines of different Fe compounds from xray emission spectra acquired using a microcalorimeter energy dispersive spectrometer (EDS). The observed changes in peak position and relative intensity of the Fe-L x-ray lines are in agreement with measurements obtained using a wavelength dispersive spectrometer (WDS), demonstrating the usefulness of microcalorimeter EDS for high-energy-resolution x-ray microanalysis.Chemical shifts result from changes in electron binding energies with the chemical environment of atoms. In x-ray spectra, chemical shifts lead to changes in x-ray peak positions, relative peak intensities, and peak shapes. These chemical bonding effects can be significant (with x-ray peak shifts on the order of 1 eV), particularly for x-ray lines resulting from transitions involving valence electrons of light elements such as B and C.
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Saunders, M., E. S. K. Menon, D. J. Chisholm, and A. G. Fox. "Extracting Chemical Information From Energy-Dispersive X-Ray Spectra by Multivariate Statistical Analysis (MSA)." Microscopy and Microanalysis 4, S2 (1998): 204–5. http://dx.doi.org/10.1017/s1431927600021140.

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The introduction of Multivariate Statistical Analysis techniques such as Principal Component Analysis (PCA) to the study of EDS and EELS spectra has opened up new possibilities for processing spectral data. In conventional EDS analysis each spectrum provides information about the elemental composition of the sample at a specific probe position. Where the signal arises from a single phase this elemental composition corresponds to the chemical composition of the phase. However, where the probe is incident on a multiphase region of the sample it is impossible to make a direct identification of the different chemical phases contributing to the overall spectrum.With PCA it is no longer necessary to consider the spectra as isolated pieces of information. It is now possible to analyze a series of spectra as a single entity, looking for correlations between the variations in the elemental signals present in the individual spectra.
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Ritchie, N., D. Newbury, and A. Lindstrom. "Compton Scattering in Electron Excited Energy Dispersive X-ray Spectra." Microscopy and Microanalysis 16, S2 (2010): 1310–11. http://dx.doi.org/10.1017/s1431927610060137.

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Newbury, Dale E., and Robert L. Myklebust. "Determining Limits of Detection from Energy Dispersive X-ray Spectra." Microscopy and Microanalysis 9, S02 (2003): 28–29. http://dx.doi.org/10.1017/s1431927603440105.

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Fernández, J. E., and M. Sumini. "SHAPE: A computer simulation of energy-dispersive x-ray spectra." X-Ray Spectrometry 20, no. 6 (1991): 315–19. http://dx.doi.org/10.1002/xrs.1300200612.

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GERASIMOV, S. A. "A METHOD FOR IDENTIFICATION OF PEAKS IN ENERGY-DISPERSIVE X-RAY SPECTRA." International Journal of PIXE 04, no. 04 (1994): 259–62. http://dx.doi.org/10.1142/s0129083594000283.

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It is found that the ratio of X-ray energies of Kα and K β lines is approximately equal to the ratio of its peak positions in the spectrum. This result can be used for identificaion of peaks in experimental energy-dispersive X-ray spectra.
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Lu, Yun, and Joy David C. "Evaluation of particle effects in bremsstrahlung and in quantitative energy-dispersive x-ray microanalysis." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1678–79. http://dx.doi.org/10.1017/s0424820100133023.

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The magnitude and the spectral form of bremsstrahlung signal contains much information about the target and is significantly influenced by the surface irregularities. By computer modelling, it is possible to extract the information to perform more accurate quantitative x-ray microanalysis for specimens with special geometries. In this research, bremsstrahlung spectra obtained from electron beams striking at selected locations of spherical particles were investigated by Monte Carlo simulations and experimental observations. The effects of surface geometries and the x-ray path lengths in the specimens on the variation of bremsstrahlung spectra and peak-to-background ratios were studied.The Monte Carlo electron trajectory calculations were determined with a screened Rutherford cross-section and a plural scattering model. The continuum x-ray depth profile is computed using Kramer's bremmstrahlung cross-section. The cross-section for inner shell ionization proposed by Green and Cosslett were employed for calculating characteristic x-rays. Bethe stopping power was determined by using the Luo-Joy modification at low energies. The mass absorption coefficient was calculated using Heinrich expression. The detector efficiency was determined experimentally.
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Dissertations / Theses on the topic "Energy dispersive X-ray spectra"

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Gullayanon, Rutchanee. "A calibration methodology for energy dispersive X-ray fluorescence measurements based upon synthetically generated reference spectra." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42771.

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This research developed an on-line measurement systemfor determining the amount of fluorochemicals on carpet fibers using energy-dispersive X-ray fluorescence (EDXRF).This system is designed as a complementary tool to an existingchemical burn test certified by the American Association ofTextile Chemists and Colorists (AATCC), which is performed off-line on randomly selected carpet samples and time consuming.This research reviewed XRF principles and determined parameters that affect XRF spectra such as measurement time, measurement number, X-ray tube voltage, X-ray tube current, primary beam filter, and carpet characteristics. For this application, XRF calibrations must be performed for carpets of all styles and types. However, preparing actual carpet calibration samples is expensive. This research introduced a methodology to synthetically generate reference spectra using XRF spectra from standard fluorochemical stock solution samples and from base carpet samples for each carpet type to be tested. Thus, actual, physical standards are not required for each carpet type or style. This study showed that the synthetically generated XRF spectra alone were not always sufficient to guarantee the confidence interval required by the certified AATCC test. Thus, it is recommended that for on-line implementation, burn test results should be used to create a historical data base for each carpet type to reduce margin of error for calibrations generated from the synthetic spectra.
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Chisholm, Daniel J. "Use of Principle Component Analysis for the identification and mapping of phases from energy-dispersive x-ray spectra." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA359572.

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Nasser, Hisham. "Thermally Stimulated Current Study Of Traps Distribution In Tlgases Layered Single Crystals." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611866/index.pdf.

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Trapping centres and their distributions in as-grown TlGaSeS layered single crystals were studied using thermally stimulated current (TSC) measurements. The investigations were performed in the temperature range of 10&ndash<br>160 K with various heating rates between 0.6&ndash<br>1.2 K/s. Experimental evidence has been found for the presence of three electrons trapping centres with activation energies 12, 20, and 49 meV and one hole trapping centre located at 12 meV. Their capture cross-sections and concentrations were also determined. It is concluded that in these centres retrapping is negligible as confirmed by the good agreement between the experimental results and the theoretical predictions of the model that assumes slow retrapping. The optical properties of TlGaSeS layered single crystals have been investigated by measuring the transmission and the reflection in the wavelength region between 400 and 1100 nm. The optical indirect transitions with a band gap energy of 2.27 eV and direct transitions with a band gap energy of 2.58 eV were found by analyzing the absorption data at room temperature. The rate of change v of the indirect band gap with temperature was determined from the transmission measurements in the temperature range of 10&ndash<br>300 K. The oscillator and the dispersion energies, the oscillator strength, and the zero-frequency refractive index were also reported. The parameters of monoclinic unit cell and the chemical composition of TlGaSes crystals were found by X-ray powder diffraction and energy dispersive spectroscopic analysis, respectively.
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Goksen, Kadir. "Optical Properties Of Some Quaternary Thallium Chalcogenides." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609442/index.pdf.

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Optical properties of Tl4In3GaSe8, Tl4InGa3Se8, Tl4In3GaS8, Tl2InGaS4 and Tl4InGa3S8 chain and layered crystals were studied by means of photoluminescence (PL) and transmission-reflection experiments. Several emission bands were observed in the PL spectra within the 475-800 nm wavelength region. The results of the temperature- and excitation intensity-dependent PL measurements in 15-300 K and 0.13&times<br>10-3-110.34 W cm-2 ranges, respectively, suggested that the observed bands were originated from the recombination of electrons with the holes by realization of donor-acceptor or free-to-bound type transitions. Transmission-reflection measurements in the wavelength range of 400-1100 nm revealed the values of indirect and direct band gap energies of the crystals studied. By the temperature-dependent transmission measurements in 10-300 K range, the rates of change of the indirect band gap of the samples with temperature were found to be negative. The oscillator and dispersion energies, and zero-frequency refractive indices were determined by the analysis of the refractive index dispersion data using the Wemple&ndash<br>DiDomenico single-effective-oscillator model. Furthermore, the structural parameters of all crystals were defined by the analysis of X-ray powder diffraction data. The determination of the compositional parameters of the studied crystals was done by energy dispersive spectral analysis experiments.
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Isik, Mehmet. "Thermally Stimulated Current Study Of Traps Distribution In Beta-tlins2 Layered Crystals." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609667/index.pdf.

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Trapping centres in as-grown TlInS2 layered single crystals have been studied by using a thermally stimulated current (TSC) technique. TSC measurements have been performed in the temperature range of 10-300 K with various heating rates. Experimental evidence has been found for the presence of five trapping centres with activation energies 12, 14, 400, 570 and 650 meV. Their capture cross-sections and concentrations were also determined. It is concluded that in these centres retrapping is negligible as confirmed by the good agreement between the experimental results and the theoretical predictions of the model that assumes slow retrapping. An exponential distribution of traps was revealed from the analysis of the TSC data obtained at different light excitation temperatures. The transmission and reflection spectra of TlInS2 crystals were measured over the spectral region of 400-1100 nm to determine the absorption coefficient and refractive index. The analysis of the room temperature absorption data revealed the coexistence of the indirect and direct transitions. The absorption edge was observed to shift toward the lower energy values as temperature increases from 10 to 300 K. The oscillator and the dispersion energies, and the zero-frequency refractive index were also reported. Furthermore, the chemical composition of TlInS2 crystals was determined from energy dispersive spectroscopic analysis. The parameters of monoclinic unit cell were found by studying the x-ray powder diffraction.
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Fairbrother, P. J. "Thermal diffuse scattering in energy-dispersive x-ray spectroscopy." Thesis, University of Exeter, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.232967.

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Geraki, Kalotina. "Differentiating normal and diseased breast tissue using X-ray fluorescence and energy dispersive X-ray diffraction." Thesis, City University London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274458.

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Kasemodel, Carlos A. "Quantitative energy dispersive x-ray spectrometry using an Emispec Vision system." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA374498.

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Thesis (M.S. in Applied Physics) Naval Postgraduate School, December 1999.<br>"December 1999". Thesis advisor(s): Alan G. Fox, James Luscombe. Includes bibliographical references (p. 69-70). Also available online.
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Canli, Sedat. "Thickness Analysis Of Thin Films By Energy Dispersive X-ray Spectroscopy." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612822/index.pdf.

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EDS is a tool for quantitative and qualitative analysis of the materials. In electron microscopy, the energy of the electrons determines the depth of the region where the X-rays come from. By varying the energy of the electrons, the depth of the region where the X-rays come from can be changed. If a thin film is used as a specimen, different quantitative ratios of the elements for different electron energies can be obtained. Unique thickness of a specific film on a specific substrate gives unique energy-ratio diagram so the thickness of a thin film can be calculated by analyzing the fingerprints of the energy-ratio diagram of the EDS data obtained from the film.
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Slater, Thomas Jack Alfred. "Three dimensional chemical analysis of nanoparticles using energy dispersive X-ray spectroscopy." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/three-dimensional-chemical-analysis-of-nanoparticles-using-energy-dispersive-xray-spectroscopy(3eb607a2-eb03-4d45-b9eb-71b0ca45c2db).html.

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The aim of this thesis is to investigate the methodology of three dimensional chemical imaging of nanoparticles through the use of scanning transmission electron microscope (STEM) – energy dispersive X-ray (EDX) spectroscopy. In this thesis, an absorption correction factor is derived for spherical nanoparticles that can correct X-ray absorption effects. Quantification of EDX spectra of nanoparticles usually neglects X-ray absorption within the nanoparticle but may lead to erroneous results, thus an absorption correction is important for accurate compositional quantification. The absorption correction presented is verified through comparison with experimental data of Au X-ray peaks in spherical Au nanoparticles and is found to agree excellently. This absorption correction allows accurate compositional quantification of large ( > 100 nm) particles with STEM-EDX.Three dimensional chemical mapping is achievable through the use of EDX spectroscopy with electron tomography. Here, the methodology of STEM-EDX tomography is fully explored, with a focus on how to avoid artefacts introduced through detector shadowing and low counts per pixel. A varied-time acquisition scheme is proposed to correct for detector shadowing that is shown to provide a more constant intensity over a series of projections, allowing a higher fidelity reconstruction. The STEM-EDX tomography methodology presented is applied to the study of AgAu nanoparticles synthesized by the galvanic replacement reaction. The elemental distribution as a function of the composition of the as-synthesized nanoparticles is characterised and a reversal in the element segregated to the surface of the nanoparticles is found. The composition at which the reversal takes place is shown to correlate with a peak in the catalytic yield of a three component coupling reaction. It is hypothesized that a continuous Au surface results in the optimum catalytic conditions for the reaction studied, which guides the use of galvanically prepared AgAu nanoparticles as catalysts.
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Books on the topic "Energy dispersive X-ray spectra"

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Bateman, J. E. Precision measurement of x-ray line spectra by energy dispersion in a gas microstrip detector. Rutherford Appleton Laboratory, 2000.

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Buras, Bronislaw. X-ray energy dispersive diffraction: Lecture Notes. Riso Library, 1988.

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Garratt-Reed, A. J. Energy-dispersive X-ray analysis in the electron microscope. BIOS, 2003.

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Kasemodel, Carlos A. Quantitative energy dispersive x-ray spectrometry using an Emispec Vision system. Naval Postgraduate School, 1999.

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Zhao, Peiying. Optimization of an energy dispersive x-ray diffraction system via GEANT4 simulations. Laurentian University, School of Graduate Studies, 2007.

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Boileau, Michel M. Energy dispersive x-ray diffraction system for breast tissue characterization: Y Michel M. Boileau. Laurentian University, School of Graduate Studies, 2005.

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Italy) European Conference on Energy Dispersive X-Ray Spectrometry (1998 Bologna. Proceedings of the European Conference on Energy Dispersive X-Ray Spectrometry 1998: EDXRS-98 : San Giovanni in Monte, Bologna, Italy, 7-12 June 1998. Compositori, 1999.

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United States. National Aeronautics and Space Administration., ed. Multiwavelength observations of unidentified high energy gamma-ray sources: Annual status report for NAG 5-2051. National Aeronautics and Space Administration, 1995.

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United States. National Aeronautics and Space Administration., ed. Multiwavelength observations of unidentified high energy gamma-ray sources: Annual status report for NAG 5-2051. National Aeronautics and Space Administration, 1995.

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C, Jackson John. A method of quantitative analysis of trace elements in silicate rocks by energy-dispersive X-ray fluorescence spectroscopy. U.S. Dept. of the Interior, Geological Survey, 1988.

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Book chapters on the topic "Energy dispersive X-ray spectra"

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Aiginger, H., M. Benedikt, and R. Görgl. "Energy Dispersive Measurement of X-Ray Tube Spectra." In Advances in X-Ray Analysis. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5377-9_17.

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Yager, D. B., and J. E. Quick. "Superxap-- A Personal-Computer-Based Program for Energy-Dispersive X-Ray Spectra Analysis." In Advances in X-Ray Analysis. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2972-9_3.

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Sotiropoulou, P., G. Fountos, N. Martini, et al. "X-Ray Spectra for Bone Quality Assessment Using Energy Dispersive Counting and Imaging Detectors with Dual Energy Method." In IFMBE Proceedings. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-00846-2_115.

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Wangen, Lawrence E., Eugene J. Peterson, William B. Hutchinson, and Leonard S. Levinson. "Multivariate Analysis of Electron Microprobe-Energy Dispersive X-ray Chemical Element Spectra for Quantitative Mineralogical Analysis of Oil Shales." In ACS Symposium Series. American Chemical Society, 1985. http://dx.doi.org/10.1021/bk-1985-0292.ch004.

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Shindo, Daisuke, and Tetsuo Oikawa. "Energy Dispersive X-ray Spectroscopy." In Analytical Electron Microscopy for Materials Science. Springer Japan, 2002. http://dx.doi.org/10.1007/978-4-431-66988-3_4.

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Lyman, Charles E., Joseph I. Goldstein, Alton D. Romig, et al. "Energy-Dispersive X-Ray Spectrometry." In Scanning Electron Microscopy, X-Ray Microanalysis, and Analytical Electron Microscopy. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0635-1_34.

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Lyman, Charles E., Joseph I. Goldstein, Alton D. Romig, et al. "Energy-Dispersive X-Ray Microanalysis." In Scanning Electron Microscopy, X-Ray Microanalysis, and Analytical Electron Microscopy. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0635-1_35.

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Lyman, Charles E., Joseph I. Goldstein, Alton D. Romig, et al. "Energy-Dispersive X-Ray Spectrometry." In Scanning Electron Microscopy, X-Ray Microanalysis, and Analytical Electron Microscopy. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0635-1_5.

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Lyman, Charles E., Joseph I. Goldstein, Alton D. Romig, et al. "Energy-Dispersive X-Ray Microanalysis." In Scanning Electron Microscopy, X-Ray Microanalysis, and Analytical Electron Microscopy. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0635-1_6.

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Heslop-Harrison, J. S. "Energy Dispersive X-Ray Analysis." In Modern Methods of Plant Analysis. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83611-4_9.

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Conference papers on the topic "Energy dispersive X-ray spectra"

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Almahamedh, Hussain H., Charles Williamson, John R. Spear, Brajendra Mishra, and David L. Olson. "Sulfate Reducing Bacteria Influenced Corrosion of Carbon Steel- Nutrient Effects." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11232.

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Abstract The effect of adding fresh nutrients to the growth of Sulfate-Reducing Bacteria (SRB), Desulfovibrio desulfuricans, in synthetic seawater was investigated by counting the planktonic cells in the solution. The corrosion of carbon steel exposed to mixed solution in the presence and absence of Desulfovibrio desulfuricans was characterized by Electrochemical Impedance Spectroscopy (EIS), linear polarization resistance (Rp) and open circuit potential (OCP) measurements. EIS spectra showed two time constants for the sterilized system of synthetic seawater and growth media. A high frequency constant is related to an outer layer due to the precipitates of chlorides, organic compound of the growth media and corrosion products. The constant at low frequency is a contribution of the metal dissolution reaction. The formation of biofilm by Desulfovibrio desulfuricans accelerates the corrosion rate and a diffusion controlled process appears as a result of sulfide-base iron corrosion products. The metal surface was examined by the Scanning Electron Microscopy (SEM) and the elemental composition of the corrosion products was estimated by X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), and Energy Dispersive Spectroscopy (EDS). Experimental result revealed a substantial decrease in the Rp values for the coupon in the solution provided with fresh growth media in the presence of Desulfovibrio desulfuricans.
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Mhd Ramle, Sitti Fatimah Binti, Mohammad Aiman Bin Mohd Zawawi, Zubaidah Aimi Binti Abdul Hamid, Nur Sakinah Bt Mohamed Tamat, and Nadiah Bte Ameram. "Characterization of Cellulose Bio-Foam (CBF) Derived from Bamboo." In International Conference on X-Rays and Related Techniques in Research and Industry 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-f0ooaa.

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Synthetic foam will negatively impact the environment and living beings. To solve this issue, synthetic materials may be substituted with more eco-friendly materials, such as foam derived from bamboo. The structure of bamboo and the substances inside make it highly useful for various applications. This research produced a biodegradable foam from the difference in weight fraction of cellulose derived from bamboo. The Kraft pulping process has been used to remove lignin and to get cellulose from bamboo (Bambusa vulgaris). The foam substance was produced by combining starch and cellulose derived from bamboo with chemical ingredients such as sodium chloride, sodium dodecyl sulfate, glycerin, and sodium hydrogen carbonate. Cellulose bio-foam (CBF) derived from bamboo were characterized by Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray (EDX). Scanning electron microscopy is a powerful technique that allows for evaluating surface morphological changes. When SEM is combined with the EDX technique, it can provide valuable input in determining the distribution of various elements on the surface. The results of SEM - EDX spectra have shown that essential elements like Carbon (C), Oxygen (O), Sodium (Na) and Chlorine (Cl) were present in the cellulose bio foam (CBF). These findings indicate that cellulose bio foams (CBF) derived from bamboo have the potential to be used in a wide range of commercial applications in substitution of synthetic foam materials.
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Videla, Héctor A., Mónica F. L. de Mele, Carolyn Swords, Robert G. J. Edyvean, and Iwona B. Beech. "Comparative Study of the Corrosion Product Films Formed in Biotic and Abiotic Media." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99163.

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Abstract The growth of sulfate-reducing bacteria (SRB) affects several important parameters at the metal/solution interface of carbon steel in liquid media such as pH and redox potential values, as well as modifications of the composition and structure of corrosion product layers. Electrochemical techniques for corrosion assessment and surface analyses by energy dispersion X-ray analysis (EDAX), X-ray photoelectron spectra (XPS), X-ray diffraction (XRD) and electron microprobe analysis (EPMA) complemented with scanning electron microscopy (SEM) and atomic force microscopy (AFM) observations, were used to study the structure and composition of protective films on carbon steel in abiotic and biotic media containing different sulfur anions. The results revealed that in biotic and abiotic sulfide films the outer layers were formed by both FeS and FeS2, although the relative content of these compounds varied in each case. Usually, the corrosion product films biotically formed were more adherent to the metal surface than those developed abiotically. The latter were flaky and loosely adherent, thus differing in their function during the corrosion process.
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Saniman, Siti Sarah, and Muhammad Firdaus Omar. "In-House X-Ray Absorption Spectroscopy Measurement Using X-Ray Diffractometer: Comparison with Synchrotron Facilities." In International Conference on X-Rays and Related Techniques in Research and Industry 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-meglf2.

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X-ray Absorption Spectroscopy (XAS) experiments are usually performed at synchrotron facilities utilizing high-intensity X-ray sources produced by particle accelerators. However, this study showcases an in-house XAS experiment carried out using an X-ray Diffractometer (XRD) system that is typically available in material laboratories. The Rigaku SmartLab XRD was employed and configured for the Bragg-Brentano (BB) measurement mode. 20 keV electron energy is used to energize a molybdenum (Mo) target and produce high-intensity white X-rays via the Bremsstrahlung effect. Several crystals were tested as crystal analyzers for white X-ray dispersion to obtain optimal X-ray intensity and resolution. The detector energy filter is optimized to increase the peak-to-background ratio then the energy dispersion and resolution over the θ/2θ scanning range is determined and evaluated. The performance of the in-house XAS experiment is compared to theoretical calculations and synchrotron data from previous studies by observing resolution and spectrum shape and peak features of deposited Copper (Cu) and Copper Oxide (CuO) samples. Our findings showed that the absorption edges were clearly observed despite the peak broadening and shifting above absorption edge. Furthermore, some peaks were also observed in the XAS spectrum which originated from X-ray fluorescence of elements from both the samples and hardware components.
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Mirdzveli, Nato, Vladimer Tsitsishvili, Nanuli Dolaberidze, Manana Nijaradze, and Bela Khutsishvili. "EFFECTS OF CHEMICAL AND THERMAL TREATMENT OF FINE DISPERSED GEORGIAN HEULANDITE-CLINOPTILOLITE." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/4.2/s17.14.

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The article considers the processes leading to a change in the structure and properties as a result of calcination followed by acid treatment of heulandite-containing tuff from the Georgian Dzegvi-Tedzami deposit. The samples obtained by heat-acid treatment were studied by the X-ray energy dispersion spectra and diffraction patterns, as well as by adsorption of water and benzene methods. It was found that pre-heat treatment reduces weight loss and the degree of dealumination during subsequent acid treatment, and also affects the decationization process: with increasing preheating temperature, the participation of sodium ions in the process slows down, while the participation of potassium ions increases, the overall degree of decationization decreases, and after annealing at 800 �C, compensating cations do not wash out. The crystalline structure of heulandite is preserved after heating to 400-450 �C and subsequent acid treatment, which is confirmed by the preservation of the peak positions in the X-ray diffraction patterns; the change in peak intensity depends on the acid concentration and is associated with changes in the content and distribution of cations. After heating to 500 �C and higher temperatures, the acid-treated samples transform into an amorphous state with crystalline inclusions of chabazite, ?-quartz and albite feldspar. The adsorption of water, reflecting the volume of micropores and all pores, as well as the adsorption of benzene, reflecting the hydrophobicity of the surface, decrease with increasing calcination temperature; subsequent acid treatment is of little significance.
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Feng, Yuanchao, and Frank Cheng. "Self-healing Pipeline Epoxy Coatings." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07152.

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Abstract In this work, benzotriazole (BTA) inhibitors were deposited on the surface of nano-SiO2 particles, which served as the inhibitor carriers. Polyelectrolytes were then adsorbed on the particle surface by a layer-by-layer method to prepare the nanocontainers to store inhibitors. The inhibitor-loading nanocontainers were characterized by a number of techniques, including scanning electron microscopy, energy-dispersive X-ray spectrum, Fast Fourier Infrared spectrum and thermal gravimetric analysis. The corrosion resistance and the nano-container doped epoxy coatings was evaluated by electrochemical impedance spectroscopy. Results demonstrate that the SiO2 nanoparticles based polyelectrolyte nano-containers are successfully fabricated to store BTA. The nano-containers added in NaCl solution are able to inhibit the corrosion of the steel. The inhibiting performance is improved with immersion time. The inhibiting efficiency is over 66% after 24 h of testing. It is expected that the inhibiting performance further increases with the continuous release of BTA from the nano-containers with time. When the steel coated with the BTA loaded nano-containers is immersed in NaCl solution, the corrosion inhibition is time dependent upon the release of encapsulated inhibitors from the containers. The change of solution pH upon the coating damage and generation of corrosive environment may trigger the opening of the nano-containers for inhibitor releasing.
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Zhang, X. Z., K. Y. Chen, R. Liu, and M. X. Yao. "Investigation of Corrosion Behavior of Wrought Co-Cr-W Super Alloys." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02315.

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Abstract The corrosion behavior of two wrought Co-Cr-W superalloys is studied under both polarization immersion tests. The corrosive media, Green Death solution, is used in both tests. Potentiodynamic polarization and cyclic polarization testes are performed to investigate general and localized corrosion resistance of these alloys. Immersion tests of the two alloys are conducted in Green Death solution to determine Critical Pitting Temperature (CPT), mass loss, thickness change and the Extreme Value (minimum thickness) using Extreme Value Analysis (EVA) model derived from the Gumbel Distribution. A Scanning Electron Microscope (SEM) with Energy Dispersive X-ray (EDX) spectrum is utilized to analyze the chemical composition of the corrosion products (pits). The presence of carbides generates potential in the electrochemical reaction, causing corrosion of the alloys in the solution. The larger the carbide volume fraction, the more the pits are formed in the alloy. Carbide size also affects maximum pit depths; the larger the carbide size, the bigger and deeper the pits. The EDX analysis results of pits show large amount of oxygen in the carbide phase and a small amount of oxygen in the solid solution phase. The Cr-rich carbides react with oxygen forming Cr-rich carbonates which are easily brittle, loose and broken.
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Marticke, F., C. Paulus, G. Montemont, O. Michel, J. I. Mars, and L. Verger. "Multi-angle reconstruction of energy dispersive X-ray diffraction spectra." In 2014 6th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS). IEEE, 2014. http://dx.doi.org/10.1109/whispers.2014.8077640.

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Joensen, K. D., P. Gorenstein, P. Høghøj, and S. Steenstrup. "Deconvolution of energy-dispersive reflection data using the Maximum Entropy Principle." In Physics of X-Ray Multilayer Structures. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/pxrayms.1994.tuc.10.

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At the previous OSA meeting on X-ray multilayers P. Dhez described using a white-beam, fixed-angle, solid-state detector experiment (the so called energy-dispersive setup) for easy characterization of multilayer structures. The simplicity of the setup makes it ideal for in-situ analysis and hard x-ray reflectivity measurements. The multilayer d-spacings can be readily obtained using only the spectrum of the reflected beam, and the absolute reflectivities can be obtained using both the white-beam spectrum and the reflected spectrum. The simplicity of the setup makes it ideal for in-situ analysis and hard x-ray reflectivity measurements. The multilayer d-spacings can be readily obtained using only the spectrum of the reflected beam, and the absolute reflectivities can be obtained using both the white-beam spectrum and the reflected spectrum. Figure 1 shows an example of a observed white-beam spectrum consisting of Bremsstralung and superimposed W-fluorescence lines. Figure 2 shows an example of the observed spectrum after reflection with a multilayered supermirror structure (described elsewhere in these proceedings).
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Cozzini, C., G. Harding, P. Edic, et al. "Energy dispersive X-ray diffraction spectral resolution considerations for security screening applications." In 2010 IEEE Nuclear Science Symposium and Medical Imaging Conference (2010 NSS/MIC). IEEE, 2010. http://dx.doi.org/10.1109/nssmic.2010.5874539.

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Reports on the topic "Energy dispersive X-ray spectra"

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Windover, D., T. M. Lu, S. L. Lee, W. Lee, and A. Kumar. Energy-Dispersive, X-Ray Reflectivity Density Measurements of Porous SiO2 Xeorgels. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada376111.

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Friedrich, S., T. Niedermayr, O. Drury, et al. Superconducting Detector System for High-Resolution Energy-Dispersive Soft X-Ray Spectroscopy. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/15013583.

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Drummond, J. L., A. D. Steinberg, and A. R. Krauss. X-ray photo-emission and energy dispersive spectroscopy of HA coated titanium. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/510589.

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Holden, Michael, Christina Doty, Arman Ter-Petrosyan, Jenna Bilbrey, Sarah Akers, and Steven Spurgeon. Automated Energy-Dispersive X-ray Spectroscopy Analysis for Multi-Modal Few-Shot Learning. Office of Scientific and Technical Information (OSTI), 2023. https://doi.org/10.2172/2484048.

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Ting, Jason. Quantitative evaluation of material composition of composites using x-ray energy-dispersive NDE technique. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10184977.

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Veloso, J. F. C. A., J. M. F. dos Santos, C. A. N. Conde, and R. E. Morgado. The application of a microstrip gas counter to energy-dispersive x-ray fluorescence analysis. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/266749.

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Webb, P. C., P. J. Potts, and J. S. Watson. A versatile method for analysis of oxide ore samples by energy dispersive X-ray fluorescence (ED-XRF). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/193298.

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Goldstein, S. J. Development of energy-dispersive X-ray fluorescence as a mobile analysis method for hazardous metals in transuranic waste. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/674571.

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Windover, D., and S. L. Lee. Thin-Film Density Determination of Tantalum, Tantalum Oxides, and Xerogels by Multiple Radiation Energy Dispersive X-Ray Reflectivity. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada364133.

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Pringle, G. J. Eddi: a Fortran Computer Program To Produce Corrected Microprobe Analyses of minerals using An Energy Dispersive X-ray Spectrometer. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130786.

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