Výsledky vyhledávání - "Georges Slodzian"

Dynamic transfer applied to secondary ion imaging over large scanned fields with the nanoSIMS 50 at high mass resolution

Autor: Jean-Luc Guerquin-Kern, Jean Duprat, Georges Slodzian, Cécile Engrand, Ting-Di Wu

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 412:123-173

Dynamic transfer is an adaptive optical approach used for coupling a scanning ion probe with the mass spectrometer designed for analyzing sputtered ions emanating from the probe impact. Its tuning is of crucial importance for getting uniform signal c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4dad96bbabd4581a3e8973308be5fa48
https://doi.org/10.1016/j.nimb.2017.06.019

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Hydrogen isotopic fractionation in secondary ion mass spectrometry using polyatomic ions

Autor: Ting-Di Wu, Emmanuel Dartois, Jean-Luc Guerquin-Kern, N. Bardin, J. Duprat, Georges Slodzian, Donia Baklouti, Rosario Brunetto, Cécile Engrand

Publikováno v: International Journal of Mass Spectrometry
International Journal of Mass Spectrometry, Elsevier, 2015, pp.17-24. ⟨10.1016/j.ijms.2015.10.005⟩

International audience; Isotopic measurements at the micron scale using secondary ion mass spectrometry (SIMS) require an accurate control on the instrumental mass fractionation (IMF). The IMF correction is challenging since substantial mass fraction

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dfac15a290ec419c7b4d4b4bb338ad9
https://doi.org/10.1016/j.ijms.2015.10.005

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Hydrogen isotopic anomalies in extraterrestrial organic matter: role of cosmic ray irradiation and implications for UCAMMs

Autor: A. N. Agnihotri, H. Vermesse, J. Duprat, T. D. Wu, Philippe Boduch, J. L. Guerquin-Kern, Cécile Engrand, Hermann Rothard, Georges Slodzian, Emmanuel Dartois, B. Augé

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 627, pp.A122. ⟨10.1051/0004-6361/201935143⟩
Astronomy and Astrophysics-A&A, 2019, 627, pp.A122. ⟨10.1051/0004-6361/201935143⟩

Context. Micrometeorites represent, at timescales shorter than a few million years, the dominant source of extraterrestrial matter at the surface of the Earth. Analyses of ultracarbonaceous micrometeorites recovered from Antarctica, known as UCAMMs r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2d024af73e3ff49cb9ba5fdc464e9ef
https://doi.org/10.1051/0004-6361/201935143

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QSA influences on isotopic ratio measurements

Autor: F. Hillion, Georges Slodzian, Frank J. Stadermann, Ernst Zinner

Publikováno v: Applied Surface Science. :874-877

The quasi-simultaneous arrival (QSA) effect has been tested with the Cameca NanoSIMS 50. The capability of obtaining rather large values of K (ratio of secondary ions ejected per primary ions) has been used to follow the evolution of QSA over a large

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9bac81c8c76db204b72144e2e6dc0e8a
https://doi.org/10.1016/j.apsusc.2004.03.155

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Oxygen isotopic measurements on the Cameca Nanosims 50

Autor: Francois Hillion, F. Horreard, Georges Slodzian, Frank J. Stadermann

Publikováno v: Applied Surface Science. :798-801

The Cameca Nanosims 50 has been designed to provide for parallel detection along a focal plane over a large mass range but spacing between adjacent mass lines makes it necessary to use miniature electron multipliers (EMs). A new version of a miniatur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f958762b6cb3a00e5f0576aa06dade3d
https://doi.org/10.1016/s0169-4332(02)00826-7

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Simultaneous hydrogen and heavier element isotopic ratio images with a scanning submicron ion probe and mass resolved polyatomic ions

Autor: J. Duprat, Cécile Engrand, N. Bardin, Jean-Luc Guerquin-Kern, Ting-Di Wu, Georges Slodzian

Publikováno v: Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada. 20(2)

In situ microanalysis of solid samples is often performed using secondary ion mass spectrometry (SIMS) with a submicron ion probe. The destructive nature of the method makes it mandatory to prevent information loss by using instruments combining effi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e95ab9671276fed67520d4fdf026abc4
https://pubmed.ncbi.nlm.nih.gov/24548344

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