G. Rémond

École Nationale Supérieure de Mécanique et des Microtechniques

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Matthew R. Phillips

University of Technology Sydney

C. Gilles

Université de Bourgogne

Fabien Cesbron

Centre National de la Recherche Scientifique

C. E. Nockolds

University of Sydney

C. Roques‐Carmes

École Nationale Supérieure de Mécanique et des Microtechniques

R. H. Packwood

Natural Resources Canada

Daniel Ohnenstetter

Université de Lorraine

Michel Fialin

Sorbonne Université

Olivier Rouer

Université de Lorraine

P. Ruzakowski

University of Houston

Cooperative Institutions

Centre National de la Recherche Scientifique

Université Paris Cité

Sorbonne Université

University of Technology Sydney

Bureau de Recherches Géologiques et Minières

National Institute of Standards and Technology

École Nationale Supérieure de Mécanique et des Microtechniques

Université d'Orléans

Université Paris-Sud

Institut de Recherche sur les ArchéoMATériaux

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Problems with oxygen analysis in the system MgO-Al₂O₃-SiO₂ with the electron microprobe

Proceedings annual meeting Electron Microscopy Society of America (1992)

Michel Fialin G. Rémond

Oxygen-bearing minerals are generally strong insulators (e.g. silicates), or if not (e.g. transition metal oxides), they are included within a rock matrix which electrically isolates them from the sample holder contacts. In this respect, a thin carbon layer (150 Å in our laboratory) is evaporated on the sections in order to restore the conductivity. For silicates, overestimated oxygen concentrations are usually noted when transition metal oxides are used as standards. These trends corroborate the results of Bastin and Heijligers on MgO, Al 2 O 3 and SiO 2 . According to our experiments, these errors are independent of the accelerating voltage used (fig.l). Owing to the low density of preexisting defects within the Al 2 O 3 single-crystal, no significant charge buildup occurs under irradiation at low accelerating voltage (< 10keV). As a consequence, neither beam instabilities, due to electrical discharges within the excited volume, nor losses of energy for beam electrons before striking the sample, due to the presence of the electrostatic charge-induced potential, are noted : measurements from both coated and uncoated samples give comparable results which demonstrates that the carbon coating is not the cause of the observed errors.

Microprobe

Acceleration voltage

10.1017/s0424820100132753

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Physics of generation and detection of signals used for microcharacterization : proceedings of the 11th Pfefferkorn Conference, held August 9 to 14, 1992 at Univ. Massachusetts, Amherst

G. Rémond Jason Snyder O. Johari

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Cathodoluminescence of Rare Earth Doped Zircons. I. Their Possible Use as Reference Materials

Scanning microscopy (1995)

Fabien Cesbron Philippe Blanc Daniel Ohnenstetter G. Rémond

Cathodoluminescence

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The use of L x-ray spectra of the first-series transition elements for quantitative analysis with the electron microprobe

Proceedings annual meeting Electron Microscopy Society of America (1992)

G. Rémond Michel Fialin C. Gilles

For the first transition-series metals with filled or partly filled 3d shells, the final states of the soft L x-ray emission bands are valence hole states ant their L emission spectra have been intensively used to investigate the valence electronic structure. The possible use of the Lα lines of these elements for quantitative analysis by x-ray spectrometry with the Electron Probe Micro-Analyzer is discussed and illustrated for the case of the Zn Lα emission band analyzed with a TAP monochromator. As shown in Figure 1 the Zn Lα emission band of pure metallic zinc exhibits an asymmetrical shape resulting from a broad tail occurring on the short wavelength side (high energy side) of the peak. This tail is the envelope of many unresolved closely spaced satellite features which arise from the deexcitation of the L 3 vacancy in the presence of multiple outer vacancies. The digitally recorded Zn Lα emission band was processed by adding Gaussian offsets to the pseudo-Voigt profile of the Zn Lα diagram line used as a fitting function.

Valence electron

10.1017/s0424820100132765

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Sur l'importance de l'apport de fer dans la transformation de l'olivine en iddingsite

Bulletin de la Société française de Minéralogie et de Cristallographie (1966)

O. Lemaitre Robert Brousse Juan C. Goñi G. Rémond

La transformation de l'olivine en iddingsite a été étudiée au microanalyseur à sonde électronique. Cette étude montre que le fer contenu dans l'iddingsite provient en grande partie d'un apport extérieur ; le phénomène de l'iddingsitisation résulte donc d'une évolution métasomatique hydrothermale d'une lave traversée par les gaz volcaniques, et non d'une évolution topochimique.

10.3406/bulmi.1966.6013

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Citations (7)

Electron and proton induced x-ray spectrometry: Two complementary spatially resolved analytical techniques in mineralogy

Applied Radiation and Isotopes (1995)

G. Rémond C. Gilles D.B. Isabelle Chang Il Choi M. Azahra

Cathodoluminescence

10.1016/0969-8043(95)00092-5

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Citations (4)

Cathodoluminescence Microscopy and Spectroscopy of Semiconductors and Wide Bandgap Insulating Materials

J. F. Bresse G. Rémond B. Akamatsu

Cathodoluminescence

Deep-level transient spectroscopy

Charge carrier

10.1007/978-3-7091-6555-3_7

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Citations (2)

Implications of polishing techniques in quantitative x-ray microanalysi

Journal of Research of the National Institute of Standards and Technology (2002)

G. Rémond C. E. Nockolds Matthew R. Phillips C. Roques-Carmes

Specimen preparation using abrasives results in surface and subsurface mechanical (stresses, strains), geometrical (roughness), chemical (contaminants, reaction products) and physical modifications (structure, texture, lattice defects).The mechanisms involved in polishing with abrasives are presented to illustrate the effects of surface topography, surface and subsurface composition and induced lattice defects on the accuracy of quantitative x-ray microanalysis of mineral materials with the electron probe microanalyzer (EPMA).

Microanalysis

Electron probe microanalysis

10.6028/jres.107.052

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Citations (22)

[The scanning electron microscope and electronic microanalyzer. Its use in the study of "ferruginous bodies" in the human lung].

PubMed (1970)

J. Bignon J.L. Olcoz Goñi G. Rémond

Human lung

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Citations (3)