“Hybrid Monte Carlo: fluid model for studying the effects of nitrogen addition to argon glow discharges”. Bogaerts A, Spectrochimica acta: part B : atomic spectroscopy 64, 126 (2009). http://doi.org/10.1016/j.sab.2008.11.004
Abstract: A computer model is developed for describing argon/nitrogen glow discharges. The species taken into account in the model include electrons, Ar atoms in the ground state and in the 4s metastable levels, N2 molecules in the ground state and in six different electronically excited levels, N atoms, Ar+ ions, N+, N2+, N3+ and N4+ ions. The fast electrons are simulated with a Monte Carlo model, whereas all other species are treated in a fluid model. 74 different chemical reactions are considered in the model. The calculation results include the densities of all the different plasma species, as well as information on their production and loss processes. The effect of different N2 additions, in the range between 0.1 and 10%, is investigated.
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 49
DOI: 10.1016/j.sab.2008.11.004
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“Possibilities and limitations of synchrotron X-ray powder diffraction with double crystal and double multilayer monochromators for microscopic speciation studies”. de Nolf W, Jaroszewicz J, Terzano R, Lind OC, Salbu B, Vekemans B, Janssens K, Falkenberg G, Spectrochimica acta: part B : atomic spectroscopy 64, 775 (2009). http://doi.org/10.1016/J.SAB.2009.06.003
Abstract: The performance of a combined microbeam X-ray fluorescence/X-ray powder diffraction (XRF/XRPD) measurement station at Hamburger Synchrotronstrahlungslabor (HASYLAB) Beamline L is discussed in comparison to that at European Synchrotron Radiation Facility (ESRF) ID18F/ID22. The angular resolution in the X-ray diffractograms is documented when different combinations of X-ray source, optics and X-ray diffraction detectors are employed. Typical angular resolution values in the range 0.30.5° are obtained at the bending magnet source when a pink beam form of excitation is employed. A similar setup at European Synchrotron Radiation Facility beamlines ID18F and ID22 allows to reach angular resolution values of 0.10.15°. In order to document the possibilities and limitations for speciation of metals in environmental materials by means of Hamburger Synchrotronstrahlungslabor Beamline L X-ray fluorescence/X-ray powder diffraction setup, two case studies are discussed, one involved in the identification of the crystal phases in which heavy metals such as chromium, iron, barium and lead are present in polluted soils of an industrial site (Val Basento, Italy) and another involved in the speciation of uranium in depleted uranium particles (Ceja Mountains, Kosovo). In the former case, the angular resolution is sufficient to allow identification of most crystalline phases present while in the latter case, it is necessary to dispose of an angular resolution of ca. 0.2° to distinguish between different forms of oxidized uranium.
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
Times cited: 7
DOI: 10.1016/J.SAB.2009.06.003
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“Spatially resolved micro-X-ray fluorescence and micro-X-ray absorption fine structure study of a fractured granite bore core following a radiotracer experiment”. Denecke MA, Brendebach B, de Nolf W, Falkenberg G, Janssens K, Simon R, Spectrochimica acta: part B : atomic spectroscopy 64, 791 (2009). http://doi.org/10.1016/J.SAB.2009.05.025
Abstract: Spatially resolved X-ray absorption and fluorescence investigation with a micrometer-scale resolution on actinide-containing samples provide information necessary for safety assessment of nuclear waste disposal. In this paper one example of such an experiment is presented. This example entails neptunium speciation in a fractured granite bore core from the Swedish Äspö Hard Rock Laboratory following a radiotracer experiment using µ-XAFS and µ-XRF. In order to probe micro-volumes below the surface in the granite samples and thereby avoid potential changes in the Np speciation during cutting of the bore core, a confocal irradiationdetection geometry is employed. µ-XAFS results for a selected granite bore core cross section with ~ 3 nmol Np/g reveal that Np, originally introduced as Np(V) in the tracer cocktail, is present in the granite in its reduced Np(IV) form. The Np(IV) is often present as particles, tens of µm in size. Elemental distribution maps show the tracer Np to be located in fissures and permeable channels not larger than 100 µm. The Np distribution appears often correlated with Zn also present in some fissures. We observe small granite fissures containing Fe (presumably Fe(II)), where we do not detect any Np. It is feasible that inflowing Np(V) has a shorter residence time in large fractures, while in the smaller fissures migration is slower, leading to longer residence times, i.e., reaction times, where it is reduced to less soluble Np(IV) and becomes thereby immobilized.
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
Times cited: 21
DOI: 10.1016/J.SAB.2009.05.025
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“Design analysis of a laser ablation cell for inductively coupled plasma mass spectrometry by numerical simulation”. Autrique D, Bogaerts A, Lindner H, Garcia CC, Niemax K, Spectrochimica acta: part B : atomic spectroscopy 63, 257 (2008). http://doi.org/10.1016/j.sab.2007.11.032
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 26
DOI: 10.1016/j.sab.2007.11.032
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“Double pulse laser ablation and laser induced breakdown spectroscopy: a modeling investigation”. Bogaerts A, Chen Z, Autrique D, Spectrochimica acta: part B : atomic spectroscopy 63, 746 (2008). http://doi.org/10.1016/j.sab.2008.04.005
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 56
DOI: 10.1016/j.sab.2008.04.005
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“Monte Carlo analysis of the electron thermalization process in the afterglow of a microsecond dc pulsed glow discharge”. Martín A, Bordel N, Pereiro R, Bogaerts A, Spectrochimica acta: part B : atomic spectroscopy 63, 1274 (2008). http://doi.org/10.1016/j.sab.2008.09.012
Abstract: A Monte Carlo model is utilized for studying the behavior of electrons in the afterglow of an analytical microsecond dc pulsed glow discharge. This model uses several quantities as input data, such as electric field and potential, ion flux at the cathode, the fast argon ion and atom impact ionization rates, slow electron density, the electrical characterization of the pulse (voltage and current profiles) and temperature profile. These quantities were obtained by earlier Monte Carlo fluid calculations for a pulsed discharge. Our goal is to study the behavior of the so-called Monte Carlo electrons (i.e., those electrons created at the cathode or by ionization collisions in the plasma which are followed by using the Monte Carlo model) from their origin to the moment when they are absorbed at the cell walls or when they have lost their energy by collisions (being transferred to the group of slow electrons) in the afterglow of the pulsed discharge. The thermalization of the electrons is a phenomenon where the electron-electron Coulomb collisions acquire a special importance. Indeed, in the afterglow the cross sections of the other electron reactions taken into account in the model are very low, because of the very low electron energy. We study the electron energy distributions at several times during and after the pulse and at several positions in the plasma cell, focusing on the thermalization and on the behavior of the electrons in the afterglow. Also, the time evolution of the rates of the various collision processes, the average electron energy, the densities of Monte Carlo and slow electrons and the ionization degree are investigated.
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 9
DOI: 10.1016/j.sab.2008.09.012
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“mu-X-ray fluorescence and mu-X-ray diffraction investigations of sediment from the Ruprechtov nuclear waste disposal natural analog site”. Denecke MA, de Nolf W, Janssens K, Brendebach B, Falkenberg G, Noseck U, Rothkirch A, Spectrochimica acta: part B : atomic spectroscopy 63, 484 (2008). http://doi.org/10.1016/J.SAB.2008.01.001
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
Times cited: 7
DOI: 10.1016/J.SAB.2008.01.001
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“Calculation of rate constants for asymmetric charge transfer, and their effect on relative sensitivity factors in glow discharge mass spectrometry”. Bogaerts A, Temelkov KA, Vuchkov NK, Gijbels R, Spectrochimica acta: part B : atomic spectroscopy 62, 325 (2007). http://doi.org/10.1016/j.sab.2007.03.010
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 28
DOI: 10.1016/j.sab.2007.03.010
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“Computer simulations of sample chambers for laser ablation-inductively coupled plasma spectrometry”. Bleiner D, Bogaerts A, Spectrochimica acta: part B : atomic spectroscopy 62, 155 (2007). http://doi.org/10.1016/j.sab.2007.02.010
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
DOI: 10.1016/j.sab.2007.02.010
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“Composition of 12-18th century window glass in Belgium : non-figurative windows in secular buildings and stained-glass windows in religious buildings”. Schalm O, Janssens K, Wouters H, Caluwé, D, Spectrochimica acta: part B : atomic spectroscopy
T2 –, 18th International Congress on X-Ray Optics and Microanalysis, September 25-30, 2005, National Institute of Nuclear Physics, Frascati, Italy 62, 663 (2007). http://doi.org/10.1016/J.SAB.2007.03.006
Abstract: A set of ca. 500 window glass fragments originating from different historical sites in Belgium and covering the period 12(th)- 18(th) century was analyzed by rneans of electron probe microanalysis. Most samples are archaeological finds deriving from non-figurative windows in secular buildings. However. the analyzed set also contains glass sampled from still existing non-figurative windows in secular buildings and stained-glass windows in religious buildings. A sudden compositional change at the end of the 14(th) century can be noticed among the series of glass compositions that were obtained. These changes could be related to the use of different glassmaker recipes and to the introduction of new raw materials for glass making. (c) 2007 Elsevier B.V All rights reserved.
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
Times cited: 50
DOI: 10.1016/J.SAB.2007.03.006
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“Multiplicity and contiguity of ablation mechanisms in laser-assisted analytical micro-sampling”. Bleiner D, Bogaerts A, Spectrochimica acta: part B : atomic spectroscopy 61, 421 (2006). http://doi.org/10.1016/j.sab.2006.02.007
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 48
DOI: 10.1016/j.sab.2006.02.007
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“Effect of laser parameters on laser ablation and laser-induced plasma formation: a numerical modeling investigation”. Bogaerts A, Chen Z, Spectrochimica acta: part B : atomic spectroscopy 60, 1280 (2005). http://doi.org/10.1016/j.sab.2005.06.009
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 165
DOI: 10.1016/j.sab.2005.06.009
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“Computer simulations of crater profiles in glow discharge optical emission spectrometry: comparison with experiments and investigation of the underlying mechanisms”. Bogaerts A, Verscharen W, Steers E, Spectrochimica acta: part B : atomic spectroscopy 59, 1403 (2004). http://doi.org/10.1016/j.sab.2004.06.005
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 14
DOI: 10.1016/j.sab.2004.06.005
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“Energy-filtered transmission electron microscopy: an overview”. Verbeeck J, van Dyck D, Van Tendeloo G, Spectrochimica acta: part B : atomic spectroscopy 59, 1529 (2004). http://doi.org/10.1016/j.sab.2004.03.020
Abstract: This paper aims to give an overview of the technique of energy-filtered transmission electron microscopy (EFTEM). It explains the basic principles of the technique and points to the relevant literature for more detailed issues. Experimental examples are given to show the power of EFTEM to study the chemical composition of nanoscale samples in materials science. Advanced EFTEM applications like imaging spectroscopy and EFTEM tomography are briefly discussed. (C) 2004 Elsevier B.V. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab
Impact Factor: 3.241
Times cited: 37
DOI: 10.1016/j.sab.2004.03.020
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“Fundamental studies on a planar-cathode direct current glow discharge: part 1: characterization via laser scattering techniques”. Gamez G, Bogaerts A, Andrade F, Hieftje GM, Spectrochimica acta: part B : atomic spectroscopy 59, 435 (2004). http://doi.org/10.1016/j.sab.2003.12.002
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 24
DOI: 10.1016/j.sab.2003.12.002
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“Fundamental studies on a planar-cathode direct current glow discharge: part 2: numerical modeling and comparison with laser scattering experiments”. Bogaerts A, Gijbels R, Gamez G, Hieftje GM, Spectrochimica acta: part B : atomic spectroscopy 59, 449 (2004). http://doi.org/10.1016/j.sab.2003.12.001
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 26
DOI: 10.1016/j.sab.2003.12.001
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“Laser ablation for analytical sampling: what can we learn from modeling?”.Bogaerts A, Chen Z, Gijbels R, Vertes A, Spectrochimica acta: part B : atomic spectroscopy 58, 1867 (2003). http://doi.org/10.1016/j.sab.2003.08.004
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 321
DOI: 10.1016/j.sab.2003.08.004
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“Change in silica sources in Roman and post Roman glass”. Aerts A, Janssens K, Velde B, Dijkman W, Spectrochimica acta: part B : atomic spectroscopy 58, 659 (2003). http://doi.org/10.1016/S0584-8547(02)00287-2
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
DOI: 10.1016/S0584-8547(02)00287-2
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“Characterization of the main causes of deterioration of grisaille paint layers in 19th C. stained-glass windows by J.-B. Capronnier”. Schalm O, Janssens K, Caen J, Spectrochimica acta: part B : atomic spectroscopy 58, 589 (2003). http://doi.org/10.1016/S0584-8547(02)00282-3
Abstract: Twenty-seven glass fragments containing dark coloured grisaille paint layers of different qualities were collected from ten windows of the cathedral St. Michael & St. Gudule in Brussels (Belgium). The windows were made by J.-B. Capronnier (18141891) and cover the period between 1843 and 1878. The samples were cross-sectioned and examined in an electron microscope. Grisaille paint layers are not homogeneous and therefore, it is not meaningful to characterize them in terms of their average composition. Instead, parameters such as granularity, the number of residual gas bubbles per running millimetre of paint, the type of pigments, and the thickness of the paint layer were used to characterize them. The microscopic morphology allows a classification of the grisaille paint layers in four groups, every group associated with a quality level. Moreover, the main causes of the accelerated degradation of some of these paint layers could be explained. The classification made it possible to distinguish two periods in the work of Capronnier: (1) the early period (18431848) is characterized by the presence of either single granular paint layers or of double-layered systems consisting of a granular paint layer on top of a well-melted paint layer. The granular grisaille paint layers tend to pulverize; (2) the later period (18481878) is characterized by the presence of only well-vitrified paint layers. No sign of deterioration was found on the well-vitrified paint layers.
Keywords: A1 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
DOI: 10.1016/S0584-8547(02)00282-3
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“A flexible and accurate quantification algorithm for EPXMA based on thin-film element yields”. Schalm O, Janssens K, Spectrochimica acta: part B : atomic spectroscopy 58, 669 (2003). http://doi.org/10.1016/S0584-8547(02)00290-2
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
DOI: 10.1016/S0584-8547(02)00290-2
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“Comparison of modeling calculations with experimental results for rf glow discharge optical emission spectrometry”. Bogaerts A, Wilken L, Hoffmann V, Gijbels R, Wetzig K, Spectrochimica acta: part B : atomic spectroscopy 57, 109 (2002). http://doi.org/10.1016/S0584-8547(01)00357-3
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 14
DOI: 10.1016/S0584-8547(01)00357-3
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“Gas discharge plasmas and their applications”. Bogaerts A, Neyts E, Gijbels R, van der Mullen J, Spectrochimica acta: part B : atomic spectroscopy 57, 609 (2002). http://doi.org/10.1016/S0584-8547(01)00406-2
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 462
DOI: 10.1016/S0584-8547(01)00406-2
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“Hybrid model for a cylindrical hollow cathode glow discharge and comparison with experiments”. Baguer N, Bogaerts A, Gijbels R, Spectrochimica acta: part B : atomic spectroscopy 57, 311 (2002). http://doi.org/10.1016/S0584-8547(01)00385-8
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 31
DOI: 10.1016/S0584-8547(01)00385-8
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“Hybrid Monte-Carlo-fluid modeling network for an argon/hydrogen direct current glow discharge”. Bogaerts A, Gijbels R, Spectrochimica acta: part B : atomic spectroscopy 57, 1071 (2002). http://doi.org/10.1016/S0584-8547(02)00047-2
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 68
DOI: 10.1016/S0584-8547(02)00047-2
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“Comparison of modeling calculations with experimental results for direct current glow discharge optical emission spectrometry”. Bogaerts A, Wilken L, Hoffmann V, Gijbels R, Wetzig K, Spectrochimica acta: part B : atomic spectroscopy 56, 551 (2001). http://doi.org/10.1016/S0584-8547(01)00220-8
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 16
DOI: 10.1016/S0584-8547(01)00220-8
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“Behavior of the sputtered copper atoms, ions and excited species in a radio-frequency and direct current glow discharge”. Bogaerts A, Gijbels R, Spectrochimica acta: part B : atomic spectroscopy 55, 279 (2000). http://doi.org/10.1016/S0584-8547(00)00142-7
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 17
DOI: 10.1016/S0584-8547(00)00142-7
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“Comparison of calculated and measured optical emission intensities in a direct current argon-copper glow discharge”. Bogaerts A, Donko Z, Kutasi K, Bano G, Pinhao N, Pinheiro M, Spectrochimica acta: part B : atomic spectroscopy 55, 1465 (2000). http://doi.org/10.1016/S0584-8547(00)00253-6
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 33
DOI: 10.1016/S0584-8547(00)00253-6
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“Description of the argon-excited levels in a radio-frequency and direct current glow discharge”. Bogaerts A, Gijbels R, Spectrochimica acta: part B : atomic spectroscopy 55, 263 (2000). http://doi.org/10.1016/S0584-8547(00)00143-9
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 3.241
Times cited: 24
DOI: 10.1016/S0584-8547(00)00143-9
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“Interpretation and use of inter-element correlation graphs obtained by scanning X-ray fluorescence micro-beam spectrometry from individual particles: part 1: theory”. Somogyi A, Janssens K, Vincze L, Vekemans B, Rindby A, Adams F, Spectrochimica acta: part B : atomic spectroscopy 55, 75 (2000). http://doi.org/10.1016/S0584-8547(99)00172-X
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
DOI: 10.1016/S0584-8547(99)00172-X
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“Interpretation and use of inter-element correlation graphs obtained by scanning X-ray fluorescence micro-beam spectrometry from individual particles: part 2: application”. Somogyi A, Janssens K, Vincze L, Vekemans B, Rindby A, Adams F, Spectrochimica acta: part B : atomic spectroscopy 55, 1039 (2000). http://doi.org/10.1016/S0584-8547(00)00220-2
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 3.241
DOI: 10.1016/S0584-8547(00)00220-2
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