WorldCat Identities

European Synchrotron Radiation Facility

Overview
Works: 92 works in 135 publications in 3 languages and 766 library holdings
Genres: Conference papers and proceedings  Periodicals 
Roles: 981, Editor, 984, Other
Classifications: QC173.4.O3, 530
Publication Timeline
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Most widely held works about European Synchrotron Radiation Facility
 
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Most widely held works by European Synchrotron Radiation Facility
ESRF newsletter the news magazine of the ESRF by European Synchrotron Radiation Facility( )

in English and held by 127 WorldCat member libraries worldwide

ESRF news by European Synchrotron Radiation Facility( )

5 editions published in 2008 in Undetermined and English and held by 87 WorldCat member libraries worldwide

Proceedings of the ILL/ESRF Workshop on Methods in the Determination of Partial Structure Factors of Disordered Matter by Neutron and Anomalous X-Ray Diffraction, Grenoble, France, 10-11 September 1992 by ILL/ESRF Workshop on Methods in the Determination of Partial Structure Factors of Disordered Matter by Neutron and Anomalous X-ray Diffraction( Book )

5 editions published in 1993 in English and held by 69 WorldCat member libraries worldwide

Highlights by European Synchrotron Radiation Facility( )

in English and Undetermined and held by 13 WorldCat member libraries worldwide

Explorer la matière avec la lumière synchrotron ploring matter with synchrotron light( )

1 edition published in 2002 in French and held by 7 WorldCat member libraries worldwide

Explorer la matière, mieux comprendre le monde qui nous entoure en plongeant au coeur des atomes et des molécules. A l'aide de ce CD-ROM et des nombreuses animations en deux et trois dimensions, découvrez les relations subtiles qui unissent la lumière et la matière, offrez-vous une visite virtuelle dans le monde mystérieux des synchrotrons et explorez leurs innombrables applications
Lumière Synchrotron light Hybrid-CD Windows, Macintosh( )

2 editions published in 2000 in German and held by 7 WorldCat member libraries worldwide

European Synchrotron Radiation Facility : Highlights 1999 by European Synchrotron Radiation Facility( Book )

2 editions published between 1999 and 2000 in French and English and held by 6 WorldCat member libraries worldwide

The status of the ESRF : lecture delivered at CERN on 20 November 1992 by J. L Laclare( Book )

2 editions published in 1993 in English and held by 6 WorldCat member libraries worldwide

The status of the ESRF : lecture delivered at CERN on 20 November 1992 by J. L Laclare( Book )

1 edition published in 1993 in English and held by 4 WorldCat member libraries worldwide

Lumière synchrotron pour explorer la matière by European Synchrotron Radiation Facility( )

4 editions published between 2001 and 2002 in Undetermined and English and held by 4 WorldCat member libraries worldwide

11th International Conference on Synchrotron Radiation Instrumentation (SRI 2012) 9-13 July 2012, Lyon, France( Book )

3 editions published in 2013 in English and held by 4 WorldCat member libraries worldwide

Contributions expérimentales et théoriques aux techniques de contraste de phase pour l'imagerie médicale par rayons X by Paul Claude Diemoz( )

1 edition published in 2011 in French and held by 3 WorldCat member libraries worldwide

Several X-ray phase-contrast techniques have recently been developed. Unlike conventional X-ray methods, which measure the absorption properties of the tissues, these techniques derive contrast also from the modulation of the phase produced by the sample. Since the phase shift can be significant even for small details characterized by weak or absent absorption, the achievable image contrast can be greatly increased, notably for the soft biological tissues. These methods are therefore very promising for applications in the medical domain. The aim of this Thesis is to contribute to a deeper understanding of these techniques, in particular propagation-based imaging (PBI), analyzer-based imaging (ABI) and grating interferometry (GIFM), and to study their potential and the best practical implementation for medical imaging applications. An important part of this Thesis is dedicated to the use of mathematical algorithms for the extraction, from the acquired images, of quantitative sample information (the absorption, refraction and scattering sample properties). In particular, five among the most known algorithms based on the geometrical optics approximation have been theoretically analysed and experimentally compared, in planar and tomographic modalities, by using geometrical phantoms and human bone-cartilage and breast samples. A semi-quantitative method for the acquisition and reconstruction of tomographic images in the ABI and GIFM techniques has also been proposed. The validity conditions are analyzed in detail and the method, enabling a considerable simplification of the imaging procedure, is experimentally verified on phantoms and human samples. Finally, a theoretical and experimental comparison of the PBI, ABI and GIFM techniques is presented. The advantages and drawbacks of each of these techniques are discussed. The results obtained from this analysis can be very useful for determining the most adapted technique for a given application
Méthodes de diffraction pour la cristallographie des protéines membranaires by Igor Melnikov( )

1 edition published in 2017 in English and held by 3 WorldCat member libraries worldwide

Dans cette étude, les aspects méthodologiques pour la production de structures cristallines à haute résolution des protéines membranaires ont été combinés et rapportés ici, ainsi que leur implication pour le cas biologique concret d'étude structurale des principes de fonctionnement de l'histidine kinase transmembranaire.Dans la cristallographie de rayons X, les échantillons de cristaux de protéines varient selon les tailles, les formes et les capacités de diffraction. Pour pouvoir collecter les données de diffraction de la manière la plus efficace, l'échantillon de cristaux doit être correctement caractérisé dans chaque cas particulier. L'analyse raster par rayons X est considérée comme la technique la plus viable pour le faire et dans ce contexte, une méthode d'analyse des échantillons de cristaux pour la cristallographie des protéines est présentée ici, qui est basée sur la technique de balayage des mailles par rayons X développée à l'ESRF. La méthode estime les positions, les tailles et la qualité de la diffraction de chaque cristal dans la zone scannée qui pourrait être plus utile pour la conception rationnelle du processus de collecte de données. La performance de la méthode est démontrée sur plusieurs échantillons de cristaux de protéines.Un autre goulot d'étranglement dans la production des structures cristallines des protéines est un problème de phase communément connu. Les techniques les plus répandues pour traiter la structure qui ne peut pas être résolue avec le remplacement moléculaire sont les techniques de mise en phase expérimentales basées sur SAD ou MAD. Cela implique l'incorporation de divers diffuseurs anormaux à la structure cristalline. Dans la liste des diffuseurs disponibles, les halogénures se distinguent surtout principalement par leur faible toxicité et leur facilité de manipulation, mais en même temps leur capacité à produire un signal anormal. Le protocole de cryo-trempage des cristaux de protéines dans des solutions contenant des halogénures s'est avéré efficace sur les structures protéiques solubles. Dans l'étude actuelle, ce protocole a été testé sur quatre structures cristallines différentes des protéines membranaires. Les résultats présentés indiquent et soutiennent de manière expérimentale que l'iodure pourrait être facilement et efficacement utilisé pour résoudre le problème de phase dans le cas des structures de cristaux de protéines membranaires.Le capteur histidine kinases est l'un des récepteurs transmembranaires les plus communs présents dans tous les royaumes de la vie. La compréhension des principes de signalisation transmembranaire de l'histidine kinases sensorielle est une question fondamentale qui reste actuellement sans réponse. Pour arriver à l'idée de quels changements structurels fournissent la transmission du signal à travers la membrane lipidique dans ce travail, la structure cristalline de la construction tronquée de l'histidine kinase NarQ d'Escherichia coli - un capteur de nitrates/nitrites - qui contient le capteur périplasmique, les hélices transmembranaires et le domaine HAMP au niveau du côté cytoplasmique a été déterminée dans les états lié à un ligand et l'apo muté. Les structures présentées fournissent un aperçu des changements de conformation qui se produisent dans le domaine transmembranaire et dans le domaine HAMP en aval pendant la transduction du signal induite par le ligand. L'avancement de la recherche structurelle a été grandement renforcé par l'implication des résultats méthodologiques présentés dans ce travail. Cet impact et, en particulier, les résultats prospectifs de ce travail aux disciplines méthodologiques et appliquées de la biologie structurale et de la cristallographie des rayons X en particulier sont discutés
Méthodes itératives pour la reconstruction tomographique régularisée by Pierre Paleo( )

1 edition published in 2017 in English and held by 3 WorldCat member libraries worldwide

In the last years, there have been a diversification of the tomography imaging technique for many applications. However, experimental constraints often lead to limited data - for example fast scans, or medical imaging where the radiation dose is a primary concern. The data limitation may come as a low signal to noise ratio, scarce views or a missing angle wedge.On the other hand, artefacts are detrimental to reconstruction quality.In these contexts, the standard techniques show their limitations.In this work, we explore how regularized tomographic reconstruction methods can handle these challenges.These methods treat the problem as an inverse problem, and the solution is generally found by the means of an optimization procedure.Implementing regularized reconstruction methods entails to both designing an appropriate regularization, and choosing the best optimization algorithm for the resulting problem.On the modelling part, we focus on three types of regularizers in an unified mathematical framework, along with their efficient implementation: Total Variation, Wavelets and dictionary-based reconstruction. On the algorithmic part, we study which state-of-the-art convex optimization algorithms are best fitted for the problem and parallel architectures (GPU), and propose a new algorithm for an increased convergence speed.We then show how the standard regularization models can be extended to take the usual artefacts into account, namely rings and local tomography artefacts. Notably, a novel quasi-exact local tomography reconstruction method is proposed
The Force Feedback Microscope : an AFM for soft condensed matter by Luca Costa( )

1 edition published in 2014 in English and held by 3 WorldCat member libraries worldwide

Since its invention in 1986, the atomic force microscopes (AFMs) have been powerful tools for the characterization of materials and material properties at the nanoscale. The present thesis focuses on the measurement of the interaction between an AFM probe and a surface. A new AFM technique called Force Feedback Microscopy (FFM) has been developed and applied to the study of biological specimens. The central principle of the FFM is that the average total force acting on the tip is maintained equal to zero. It means that, in presence of a tip-sample interaction, a counteracting force has to be applied to the tip by a feedback loop. We apply a counteracting force to the tip by displacing the cantilever base with a small piezoelectric element. The feedback loop avoids mechanical instabilities such as jump to contact allowing the complete measurement of the interaction force. Moreover it is possible to simultaneously measure the elastic and inelasticcomponents of the interaction.The technique has been applied to the study of interactions at the solid/gas interface with a particular interest to the observation of the nucleation and rupture of capillary condensates between the tip and the sample. At the solid/liquid interface, complete DLVO force curves are characterized elastically and inelastically.We developed new AFM imaging modes for the study of biomolecules. Images of phospholipids and DNA at constant force have been acquired and the mechanical Young modulus of the samples has been evaluated when possible. In addition, a spectroscopic study of the elasticity and the damping factor of the interaction between living cells and the tip has been carried out. The study reveals that the FFM is an instrument capable of measuring the interaction at frequencies which are not necessarily linked to the cantilever eigenmodes. The spectroscopy study could have in the future important applications on the study of biomolecules and polymers
L'origine de la réponse magnétique particulière des films minces de Co intercalés entre Graphene et Ir(111) by Ilaria Carlomagno( )

1 edition published in 2017 in English and held by 3 WorldCat member libraries worldwide

This thesis focuses on the structural evolution and the peculiar magnetic response of Cobalt films observed upon intercalation between Graphene and Ir(111).The origin of the exotic magnetic behaviour of such films cite{ROUGEMAILLE} has not been found yet. In this respect, the final goal of this work is to probe the effects of the structural anisotropy on the magnetic anisotropy.Several parameters such as: film thickness, annealing times and temperatures, Graphene presence, and Co local environment were taken into account as possible sources of structural anisotropy.A complete analysis was carried out using complementary, state-of-the-art techniques. While laboratory techniques such as X-ray Photoelectron Spectroscopy (XPS) and Magneto-Optic Kerr Effect (MOKE) provided information on the Co distribution along the direction perpendicular to the surface, and on the magnetic response, synchrotron radiation techniques such as X-ray Absorption Spectroscopy (XAS) and Grazing Incidence X-ray Diffraction (GIXD) probed the local structure and the long range order of the films.The analysis presented in this thesis includes the surface effects at the Co/Ir interface, the local Co environment, the crystalline structure of the film and the system roughness and average disorder.In particular, the evolution of such parameters is presented and discussed together with their effect on the macroscopic magnetic response of the intercalated films.The results demonstrate that thermal treatments affect Co morphology, roughness, and local coordination. Such effects alter the film structure affecting the overall magnetic anisotropy. This information alone is valuable for applicative purposes. Moreover, the description of the micro-structural modifications provides a deep insight into the physical properties of intercalated Co films
Durabilité des convertisseurs électrochimiques haute température à oxydes solides : une étude expérimentale et de modélisation basée sur la caractérisation au synchrotron par nanotomographie des rayons X by Maxime Hubert( )

1 edition published in 2017 in English and held by 3 WorldCat member libraries worldwide

This work aims at a better understanding of the high temperature Solid Oxide Cells degradation. An approach based on electrochemical tests, advanced post-test characterizations and multi-scale models has been used to investigate the links between the performances, the electrodes microstructure and their degradation. In that goal, long-term durability tests have been performed over thousand hours in different operating conditions. Electrode microstructures have been reconstructed by X-ray nano-holotomography for the pristine and the aged cells. It is worth noting that a special attention has been paid to improve both the process reliability for the tomographic experiments as well as the spatial resolution of the 3D reconstructed images. Thanks to the valuable 3D volumes, the Ni-YSZ microstructural properties of the H2 electrode have been quantified for the fresh and the aged samples. Then, a physically-based model for Nickel particle agglomeration has been adjusted on the microstructural parameters obtained by the 3D analysis and implemented in an in-house multi-scale modelling framework. Beforehand, it has been necessary to enrich the available numerical tool with a specific module dedicated to the oxygen electrode made in Mixed Ionic Electronic Conducting materials. Once validated on polarisation curves, the completed model has been used to quantify the contribution of Nickel agglomeration on the experimental degradation rates recorded in fuel cell and electrolysis modes
La dynamique de réaction de petites molécules en solution by Denis Leshchev( )

1 edition published in 2016 in English and held by 3 WorldCat member libraries worldwide

This thesis investigates photoinduced transient dynamics of small molecules in solution with the use of time-resolved wide angle x-ray scattering (TR-WAXS). The core of the thesis is the precise determination of transient structures with the use of various structural optimization schemes. Some of the TR-WAXS results are supplemented with transient absorption optical spectroscopy (TOAS) and time-resolved x-ray emission spectroscopy (TR-XES) measurements allowing for a more complete description of the systems.par The work includes four different projects which can be grouped into two classes according to the type of reaction appearing upon photoexcitation: dissociation and electron transfer. The first class includes the simple triatomic molecules mercury halides and triiodide where we study the recombination dynamics of the free photofragments. This part of the thesis demonstrates the possibility to gain new knowledge about the dynamics of these model systems such as new recombination channels and reaction intermediates appearing in less than 100 ps, the xray pulse length from the synchrotron, by the use of time-slicing technique. The second class of systems includes transition metal complexes that are highly relevant for light harvesting applications, [Fe(NHC)2]2+ and Ru=Co, where the spin and structural dynamics are investigated. These projects extend previous work to a family of more complex systems constituted of relatively low-Z atoms (first row transition metals) and bring new insights into the photochemistry of the compounds
Structural and chemical characterization of single Co-implanted ZnO nanowires by a hard X-ray nanoprobe by Manh-Hung Chu( )

1 edition published in 2014 in English and held by 3 WorldCat member libraries worldwide

The PhD dissertation focuses on the investigation of single Co-implanted ZnO nanowires using X-ray fluorescence, X-ray absorption spectroscopy, and X-ray diffraction techniques with nanometer resolution at the beamline ID22 of the European Synchrotron Radiation Facility. The ZnO nanowires were grown on p-Si (100) substrates using vapor-liquid-solid mechanism. The synthesized ZnO nanowires were doped with Co via an ion implantation process. For the first time, the combined use of these techniques allows us to study the dopant homogeneity, composition, short- and large-range structural order of individual nanowires. The nano-X-ray fluorescence results indicate the successful and homogeneous Co doping with the desired concentrations in the ZnO nanowires by an ion implantation process. The nano-X-ray absorption spectroscopy and X-ray diffraction data analyses provide new insights into the lattice distortions produced by the structural defect formation generated by the ion implantation process. These findings highlight the importance of the post-implantation thermal annealing to recover the structure of single ZnO nanowires at the nanometer length scale. Complementary microphotoluminescence and cathodoluminescence measurements corroborrate these results. In general, the methodologies used in this work open new avenues for the application of synchrotron based multi-techniques for detailed study of single semiconductor nanowires at the nanoscale
Power absorption mechanisms and energy transfer in X-ray gas attenuators by Álvaro Martín Ortega( )

1 edition published in 2017 in English and held by 3 WorldCat member libraries worldwide

The work done in the context of this thesis focuses in the study of an X-ray gas attenuator and the plasma produced within. An X-ray gas attenuator consists on a vessel filled with gas, usually argon or krypton at a few hundreds millibars, that absorbs the low energy fraction of a synchrotron X-ray spectrum, reducing the power received by downstream optical elements without affecting the properties of the high energy part of the spectrum. The absorption of the photons creates a region of hot, ionized gas around the X-ray beam path, decreasing locally the gas density. A detailed energy balance between all the involved processes is required to be able to predict the absorption and operate and design gas attenuators efficiently. A hybrid model combining Monte Carlo and fluid modelling techniques has been developed to determine the energy balance and simulate the X-ray absorption. The model has been validated by experimental studies including power absorption, optical emission spectroscopy and tunable laser absorption spectroscopy. The results of both simulation and experiments show a plasma confined around the X-ray beam path, recombining in the bulk of the gas and with a maximum temperature of several hundreds of Kelvin. The model was able to predict the X-ray absorption within a 10-20% of error, which allows its use as a first approximation for the design and operation of gas attenuators, and also provides a starting point for more refined models
 
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Lumière Synchrotron light Hybrid-CD Windows, Macintosh Lumière synchrotron pour explorer la matière
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Lumière Synchrotron light Hybrid-CD Windows, MacintoshLumière synchrotron pour explorer la matière
Alternative Names
ESRF

ESRF (European Synchrotron Radiation Facility)

ESRF (European Synchrotron Radiation Facility, Grenoble)

ESRF (Grenoble)

Europäische Synchrotron-Strahlungsquelle (Research institute)

European Synchrotron (Grenoble)

European synchrotron radiation facility

European Synchrotron Radiation Facility (Grenoble)

Installation européenne de rayonnement synchrotron

Source européenne de rayonnement synchrotron

Source européenne de rayonnement synchrotron (Grenoble)

Европейски център за синхротронна радиация

Languages
English (49)

French (6)

German (2)