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Dissertations / Theses on the topic 'Electron rays'

Author: Grafiati
Published: 6 September 2023
Last updated: 31 July 2025

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1

Prade, H. "Workshop on X-rays from electron beams." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-30011.

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2

Prade, H. "Workshop on X-rays from electron beams." Forschungszentrum Rossendorf, 2000. https://hzdr.qucosa.de/id/qucosa%3A21828.

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3

Nilsson, Daniel. "Zone Plates for Hard X-Ray Free-Electron Lasers." Doctoral thesis, KTH, Biomedicinsk fysik och röntgenfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122161.

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Hard x-ray free-electron lasers are novel sources of coherent x-rays with unprecedented brightness and very short pulses. The radiation from these sources enables a wide range of new experiments that were not possible with previous x-ray sources. Many of these experiments require the possibility to focus the intense x-ray beam onto small samples. This Thesis investigates the possibility to use diffractive zone plate optics to focus the radiation from hard x-ray free-electron lasers. The challenge for any optical element at free-electron laser sources is that the intensity in a single short pul
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4

Chandril, Sandeep. "In situ structural and compositional analysis using RHEED electrons induced x-rays." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10641.

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Thesis (Ph. D.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains ix, 97 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 95-97).
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5

Chighvinadze, Tamar. "A spectroscopic Compton scattering reconstruction algorithm for 2D cross-sectional view of breast CT geometry." Journal of X-Ray Science and Technology, IOS press, 2014. http://hdl.handle.net/1993/23846.

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X-ray imaging exams are widely used procedures in medical diagnosis. Whenever an x-ray imaging procedure is performed, it is accompanied by scattered radiation. Scatter is a significant contributor to the degradation of image quality in breast CT. This work uses our understanding of the physics of Compton scattering to overcome the reduction in image quality that typically results from scattered radiation. By measuring the energy of the scattered photons at various locations about the object, an electron density (ρe) image of the object can be obtained. This work investigates a system modele
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6

Chen, Hai Ph D. Massachusetts Institute of Technology. "Precision measurement of electron and positron flux in cosmic rays with the AMS-02 Detector." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103243.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 159-169).<br>The cosmic ray electron and positron flux measurement can address a series of astrophysics and particle physics questions. This thesis presents an analysis of electron and positron flux from 0.5 GeV to 1 TeV using the first 30 months of data taking( over 41 billion events), with the AMS-02 detector on the International Space Station(ISS) 330-410 km above earth. A precise calibration of the Electromagnetic Calorim
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7

Checchia, Caterina. "Study of cosmic-ray light nuclei on the ISS: identification of the interaction point in the CALorimetric Electron Telescope (CALET)." Doctoral thesis, Università di Siena, 2018. http://hdl.handle.net/11365/1054668.

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At present, Astro-particle Physics is one of the most interesting and alive fields in experimental physics. Direct measurements of cosmic rays will help answering many open questions about the sources and the processes of acceleration and propagation in the interstellar medium of high-energy particles (from GeV to PeV energy scale). For example, the measurement of both light and heavy nuclei spectra and their relative abundances for energies of tens of TeV/nucleon is one of the main topic to understand acceleration and propagation mechanisms in our Galaxy. The CALorimetric Electron Telescope
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8

Petersen, Timothy W. "Tabletop internal source ensemble x ray holography /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/9747.

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9

Reppart, William J. "Magnetic and crystallographic investigations of selected single crystal systems /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262513407635.

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10

Snavely, Richard Adolph. "Physics of laser driven relativistic plasmas, energetic X-rays, proton beams and relativistic electron transport in Petawatt laser experiments /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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11

Shabani, Juvet Malonda. "Synthesis of clay-based catalysts for bioethanol conversion." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2488.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2016.<br>For decades, clays have been applicable as commercial catalysts mostly for cracking in petroleum industries. Clays are also used for development of useful catalysts for various other industrial applications. Hence, this work was aimed to synthesize clay-based catalysts from clay minerals (Kaolin, bentonite and talc) that will be active for the conversion of bioethanol to fuel hydrocarbons. Catalyst characterisation techniques employed on the samples produced in this work include the Energy Dispersive Spec
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12

You, Yan. "Pulsed Laser Injected Enhancement Cavity for Laser-electron Interaction." Phd thesis, Université Paris Sud - Paris XI, 2014. http://tel.archives-ouvertes.fr/tel-01011958.

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X-ray diffraction and scattering, X-ray spectroscopy, and X-ray crystallography are widely used in the life sciences, material science, and medical diagnosis. High-quality and high-brightness X-rays are a strong requirement to improve applications. Inverse Compton scattering (ICS) X-ray source has attracted great interests worldwide lately. To significantly enhance the average X-ray photon flux, a compact electron storage-ring combined with a high finesse optical enhancement cavity (OEC) can be utilized. In such a system, the collision rate between the electron beam and the laser pulse is great
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13

Voigt, Bernhard. "Sensitivity of the IceCube detector for ultra-high energy electron-neutrino events." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15850.

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Zur Zeit wird das IceCube Neutrino-Teleskop am Südpol im Eis der Antarktis installiert, die Hälfte des Detektors ist bereits im Betrieb. Bei Fertigstellung im Jahr 2011 wird mehr als 1 km^3 Eis mit Photovervielfachern instrumentiert sein. IceCube bietet damit eine einzigartige Möglichkeit, die Quellen der kosmischen Strahlung mit Hilfe hochenergetischer Neutrinos zu finden. Im Rahmen dieser Arbeit wurde die Sensitivität des kompletten Icecube Detektors für den Nachweis eines diffusen Flusses von Elektronneutrinos bestimmt. Ziel war es, die Eigenschaften des Detektors für Energien
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14

Ablikim, Utuq. "Coulomb explosion imaging of polyatomic molecules after photoionization with X-rays and strong laser fields." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/36252.

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Doctor of Philosophy<br>Department of Physics<br>Daniel Rolles<br>Imaging the structures of molecules, understanding the molecular dynamics in onization and dissociation processes and, most importantly, observing chemical reactions, i.e. the making and breaking of chemical bonds in real time, have become some of the most exciting topics in the atomic and molecular physics. The rapid advances of experimental tools such as synchrotron radiation light sources, free-electron lasers and continuing advances of tabletop femtosecond ultrashort lasers that provide laser pulses at a variety of wavelen
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15

Tao, Li. "Measurement of the cosmic lepton and electron fluxes with the AMS detector on board of the International Space Station. Monitoring of the energy measurement in the calorimeter." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENY016/document.

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Le Spectromètre Magnétique Alpha (AMS) est un détecteur de particules installé à bord de la Station Spatiale Internationale ; il enregistre des données depuis mai 2011. L'expérience a pour objectif d'identifier la nature des rayons cosmiques chargés et des photons et de mesurer leur flux dans la gamme d'énergie du GeV au TeV. Ces mesures permettent d'affiner les modèles de propagation de rayons cosmiques, d'effectuer une recherche indirecte de matière noire, et de chercher l'antimatière primordiale (anti-hélium). Dans ce mémoire, les données des premières années ont été utilisées pour mesurer
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16

Engelbrecht, Monique. "The interaction between 6 MV X-rays and p(66)/Be neutrons with spherical gold nanoparticles to induce cellular damage." University of the Western Cape, 2016. http://hdl.handle.net/11394/5550.

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Magister Scientiae (Medical Bioscience) - MSc(MBS)<br>Despite the advances in therapies such as chemotherapy and radiotherapy, tumours have been shown to be resistant to the treatments. Gold nanoparticles (AuNPs) have been recognized as effective radiosensitizers of low energy (e.g. 200–500 kV) X-rays, leading to the emission of Auger electrons that cause highly localised ionizing damage to cells. Spherical AuNPs were synthesised via the reduction of the chloroaurate ions by sodium citrate. Characterisation of AuNPs involved UV-visible spectrophotometry, zeta (Z) potential, dynamic light scat
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17

Alpuche, Aviles Jorge Edmundo. "The Development and Validation of a First Generation X-Ray Scatter Computed Tomography Algorithm for the Reconstruction of Electron Density Breast Images Using Monte Carlo Simulation." Journal of X-ray Science and Technology, IOS Press, 2011. http://hdl.handle.net/1993/4970.

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Breast CT is a promising modality whose inherent scatter could be used to reconstruct electron density (rho_e) images. This has led us to investigate the benefits of reconstructing linear attenuation coefficient (mu) and (rho_e) images of the breast. First generation CT provides a cost-effective and simple approach to reconstruct (rho_e) images in a laboratory but is limited by the anisotropic probability of scatter, attenuation, noise and contaminating scatter (coherent and multiple scatter). These issues were investigated using Monte Carlo (MC) simulations of a first generation breast scat
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18

Nndanganeni, Rendani Rejoyce. "Modelling of galactic cosmic ray electrons in the heliosphere / Nndanganeni, R.R." Thesis, North-West University, 2012. http://hdl.handle.net/10394/7034.

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The Voyager 1 spacecraft is now about 25 AU beyond the heliospheric termination shock and soon it should encounter the outer boundary of the heliosphere, the heliopause. This is set to be at 120 AU in the modulation model used for this study. This implies that Voyager 1, and soon afterwards also Voyager 2, should be able to measure the heliopause spectrum, to be interpreted as the lowest possible local interstellar spectrum, for low energy galactic electrons (1 MeV to 120 MeV). This could give an answer to a long outstanding question about the spectral shape (energy dependence) of the galactic
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19

Way, Austin J. "Fabrication of a-Si and a-InGaN Photovoltaics by Plasma Sputtering." Ohio University Honors Tutorial College / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1398270155.

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20

Wu, Zhongming. "Diffraction studies of structure and growth of films absorbed on the AG(111) surface /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9841195.

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21

Camacho, Garibay Abraham. "Dynamics of Highly Charged Finite Systems Induced by Intense X-ray Pulses." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-212203.

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The recent availability of X-ray Free Electron Lasers (XFELs) has opened a completely new and unexplored regime for the study of light-matter interactions. The extremely bright intensities delivered by XFELs can couple many photons into the target, turning well known interactions such as photoionization and scattering into new, non-linear, complex many-body phenomena. This thesis reports theoretical investigations aiming to improve the understanding of the fundamental processes and dynamics triggered by intense X-ray pulses, with a special focus in finite systems such as molecules and clusters
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22

Henningsson, Anders. "Ion Insertion into Electrode Materials Studied with X-Ray and Electron Spectroscopic Methods." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2002. http://publications.uu.se/theses/91-554-5268-X/.

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23

Iwan, Bianca. "Creating and Probing Extreme States of Materials : From Gases and Clusters to Biosamples and Solids." Doctoral thesis, Uppsala universitet, Molekylär biofysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-180997.

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Free-electron lasers provide high intensity pulses with femtosecond duration and are ideal tools in the investigation of ultrafast processes in materials. Illumination of any material with such pulses creates extreme conditions that drive the sample far from equilibrium and rapidly convert it into high temperature plasma. The dynamics of this transition is not fully understood and the main goal of this thesis is to further our knowledge in this area. We exposed a variety of materials to X-ray pulses of intensities from 1013 to above 1017 W/cm2. We found that the temporal evolution of the resul
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24

Kurata, Ryohei. "Studies on Electronic Properties of Nitrogen-and Boron-Containing π-Electron Systems". Doctoral thesis, 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225623.

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京都大学<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第20398号<br>工博第4335号<br>新制||工||1672(附属図書館)<br>京都大学大学院工学研究科分子工学専攻<br>(主査)教授 関 修平, 教授 今堀 博, 准教授 伊藤 彰浩, 教授 白川 昌宏<br>学位規則第4条第1項該当<br>Doctor of Philosophy (Engineering)<br>Kyoto University<br>DGAM
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Carlo, Hugo Lemes. "Influencia do conteudo volumetrico das particulas de cargas nas propriedades mecanicas de diferentes materiais de moldagem." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288141.

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Orientadores: Mario Alexandre Coelho Sinhoreti, Carlos Jose Soares<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-11T16:18:48Z (GMT). No. of bitstreams: 1 Carlo_HugoLemes_D.pdf: 4484901 bytes, checksum: b6c246e6e05cdf7633210adfa7b73c84 (MD5) Previous issue date: 2008<br>Resumo: Baseado no entendimento incompleto de como o conteúdo de partículas de carga influencia nas propriedades mecânicas dos materiais de moldagem este estudo avaliou quantitativa e qualitativamente o conteúdo de partículas de carga inor
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Chaudhry, M. A. "Electron and X-ray spectroscopy of electron-atom collisions." Thesis, University of Stirling, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379507.

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SILVA, NATALIA F. da. "Estabelecimento de um sistema padrão primário para raios X baixas com uma câmara de ionização de ar livre de energias." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26382.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-06-22T12:43:46Z No. of bitstreams: 0<br>Made available in DSpace on 2016-06-22T12:43:46Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Piccinardi, Rita. "X-Ray Free-Electron Lasers." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10286/.

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Recenti sviluppi nella progettazione di impianti di luce di sincrotrone di quarta generazione riguardano la produzione di fasci di luce nella banda dei raggi X con elevate caratteristiche in termini di brillanza, coerenza e impulsi estremamente brevi ( femtosecondo ) . I principali schemi per la produzione della radiazione XFEL riguardano l’impiego di ondulatori con differenti modalità di seeding. L’utilizzo dei fasci di radiazione XFEL nelle linee di luce per applicazioni di imaging, spettroscopia e diffrazione, ha determinato un costante sforzo sia nello sviluppo di dispositivi ottici
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Chauchat, Anne-Sophie. "Étude de la production de rayonnement X par diffusion Compton sur l’installation ELSA." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112010/document.

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La diffusion Compton est un moyen de produire des rayons X en réalisant des collisions entre un faisceau d'électrons relativistes et un faisceau laser. Par analogie avec le rayonnement synchrotron, le faisceau laser joue le rôle d'onduleur, ce qui entraîne les électrons dans un mouvement d'oscillation. Le rayonnement émis par les électrons en mouvement, dont certaines caractéristiques sont proches de celle du rayonnement synchrotron, peut être produit sur des machines relativement compactes. L'installation ELSA du CEA DAM DIF dispose d'un accélérateur d'électrons (17 MeV) et d'un laser (532 nm
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Ray, Nicolas [Verfasser], and Oleg [Gutachter] Pankratov. "Phonon-induced electron scattering and electric conductivity in twisted bilayer graphene / Nicolas Ray ; Gutachter: Oleg Pankratov." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1152078976/34.

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31

Balducci, Lodovico. "Dynamics of hemeproteins by femtosecond X-ray techniques." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S115.

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Récemment, la mise au point de techniques de radiographie à résolution temporelle a ajouté la dimension temporelle à la recherche dans le domaine de la biologie structurale et celles-ci se sont avérées être d'excellents outils pour suivre l'évolution structurale des protéines lors d'une réaction. En particulier, les sources de rayons X de 4ème génération (appelées lasers à électrons libres et à rayons X), avec des impulsions de l'ordre de la femtoseconde et des fluences extrêmement élevées, sont capables de sonder des ensembles de molécules essentiellement gelées dans le temps dans des conditi
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Cai, Zhongli. "DNA damage induced by secondary electrons and x-rays." Thèse, Université de Sherbrooke, 2005. http://savoirs.usherbrooke.ca/handle/11143/4204.

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X-rays are widely used in medical diagnosis and radiotherapy. The effects of X-rays on cells are dominated by their actions on the cellular DNA. The interaction of X-rays with DNA produces photoelectrons, Auger electrons, Compton electrons and large quantities of secondary electrons (SE), the majority of which have energies lower than 70 eV. This thesis aims to compare the DNA damage induced by SE and X-rays. A dosimetry method to measure the absorbed dose of Al[subscript k alpha] X-rays (1.5 keV) in ultrahigh vacuum chamber (UHV) using radiochromatic dosimetry films and a color scanner was de
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33

Dupuy, Rémi. "Photon and electron induced desorption from molecular ices Spectrally-resolved UV photodesorption of CH4 in pure and layered ices The efficient photodesorption of nitric oxide (NO) ices : a laboratory astrophysics study X-ray photodesorption from water ice in protoplanetary disks and X-ray-dominated regions." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS068.

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L’excitation électronique de molécules condensées sur des surfaces froides (10-100 K) peut mener à la désorption de certaines de ces molécules. Ce processus fondamental a des conséquences dans de nombreuses disciplines, dont deux ont guidé ce travail : l’astrochimie et la dynamique du vide dans les accélérateurs. La désorption induite par photons et électrons est étudiée pour des films amorphes de molécules condensées (glaces) telles que CO, H2O, NO ou CH4. Un objectif de cette thèse est la quantification de la désorption des différentes espèces, et d’explorer les paramètres pouvant affecter l
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Chervy, Pierre. "Caractérisation biophysique des interactions entre le Lanréotide et des membranes lipidiques." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS306.

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L’objectif de ce travail est de caractériser l’interaction entre le Lanréotide – un octapeptide dicationique – et des membranes composées de lipides. Bien que ce peptide soit très soluble, il possède des propriétés d’autoassemblage. Au-delà d’une concentration critique – qui est sensible à la température et à la force ionique – ce peptide s’auto-assemble en nanotubes dont la structure a été résolue par l’équipe. Ce travail de thèse comporte deux volets : d’une part l’étude de l’interaction entre le Lanréotide et des membranes anioniques, d’autre part l’étude de l’interaction entre le Lanréotid
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Williams, Andrew James. "A water calorimeter for high energy x-rays and electrons." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394541.

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Carducci, Michael David. "High-resolution probes of electronic states: Magnetic circular dichroism spectroscopy and electron density distributions by x-ray diffraction." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186908.

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Magnetic Circular Dichroism spectroscopy (MCD) has been used to assign the optical spectra in high and low symmetry molybdenyl complexes. High resolution single crystal polarized absorption spectra of (PPh₄) (MoOCl₄) and (AsPh₄) (MoOCl₄(H₂O)) show two ligand field transitions whose polarization, MCD and vibronic fine structure are compatible with previously accepted assignments. In the case of (AsPh₄) (MoOCl₄(H₂O)), the splitting of the ²E by spin-orbit coupling is 810(2) cm⁻¹. The absorption and MCD spectra of LMoOX₂ complexes (where L is hydrotris(3,5-dimethyl-1-pyrazolyl)borate and X = O, C
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37

Hess, Robert. "Electron transport modelling in X-ray tubes." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/970/.

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38

Ogata, Daniela Yuri. "Efeito do tratamento superficial na devitrificação e dissolução da silica vitrea." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264852.

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Orientador: Carlos Kenich Suzuki<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-07-22T19:32:43Z (GMT). No. of bitstreams: 1 Ogata_DanielaYuri_M.pdf: 14373801 bytes, checksum: 37390613963c28ba54f71a665d3cefb7 (MD5) Previous issue date: 1997<br>Resumo: Neste trabalho procurou-se investigar a influência do tratamento da superficie (tensão/rugosidade provocado pelo processo de desbaste com pó abrasivo) na devitrificação e na dissolução da sílica vítrea. Para tanto, utilizou-se de métodos de caracterização de mat
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Nunes, Claudia Carvalho. "Propriedades estruturais do material vitreo silica-titania produzido pelo metodo do aerosol em chama." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264844.

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Orientador: Carlos Kenichi Suzuki<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-11T16:06:32Z (GMT). No. of bitstreams: 1 Nunes_ClaudiaCarvalho_M.pdf: 7074659 bytes, checksum: 4dec2d1e75a640341af023ba7541f5cb (MD5) Previous issue date: 2008<br>Resumo: O sistema binário sílica titânia, SiO2-TiO2,apresenta grande interesse tecnológico devido as suas propriedades: ultra-baixo coeficiente de expansão térmico e alto índice de refração. As propriedades são dependentes da quantidade de dopante presente no materi
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40

Lorentzen, Kirsten. "Duskside relativistic electron precipitation /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/6839.

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41

Suchánek, Jan. "Elektronový ray tracer." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403130.

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This thesis is pointed on simulation of electron microscope. It uses knowledge  from ray-tracing methods and physically based rendering with physics of electron microscopy. The main object of this thesis is to create realistic simulator for electron microscope which can generate satisfying realistic images. This output can be used for another research in range of machine learning or microscope application development. This method should replace long and more expensive way of getting test images from real system for those research activities.
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42

Cheung, Loi-ning. "Light and electron microscopic study of the mandibular joint in the rat." Thesis, Click to view the E-thesis via HKUTO, 1992. http://sunzi.lib.hku.hk/HKUTO/record/B38628326.

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43

SMITH, MARK SCOTT. "THE FORMULATION OF THE STREAMING RAY METHOD FOR ELECTRON TRANSPORT CALCULATIONS IN TWO DIMENSIONS." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184222.

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In this work, the method of streaming rays have been expanded to two spatial dimensions (three phase space dimensions, x, y, and s) and was used as a basis for the development of the electron transport computer code SR2D. The streaming ray algorithm is an Eulerian-Lagrangian hybrid. Electrons are followed as they traverse the medium along specified streaming rays. Fluxes, however, are computed at the centers of the fixed cells. The development of the SR2D code required the specification of a Lagrangian streaming ray network overlaying a three dimensional Eulerian grid. In contrast to its one d
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44

Lemos, Ana Cláudia Cavalcante Espósito [UNESP]. "Estudo histomorfométrico, ultraestrutural e da expressão de Wnt1, WIF-1 e ASIP na pele com melasma em comparação com a pele sã perilesional e retroauricular." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151232.

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Submitted by Ana Cláudia Cavalcante Espósito null (anaclaudiaesposito@gmail.com) on 2017-07-27T20:34:29Z No. of bitstreams: 1 Ana Cláudia mestrado para depositar.pdf: 2933638 bytes, checksum: 3c192abd021482675fa186f4c4bba9e4 (MD5)<br>Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-07-31T19:29:06Z (GMT) No. of bitstreams: 1 lemos_acce_me_bot.pdf: 2933638 bytes, checksum: 3c192abd021482675fa186f4c4bba9e4 (MD5)<br>Made available in DSpace on 2017-07-31T19:29:06Z (GMT). No. of bitstreams: 1 lemos_acce_me_bot.pdf: 2933638 bytes, checksum:
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45

Батіщев, А. С. "Дослідження взаємодії гармонік дифракційно-черенковського випромінювання у багатозв’язних квазіоптичних системах з періодичними неоднорідностями". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/87400.

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Об’єктом дослідження дипломної роботи є гармоніки дифракційно-черенковсьго випромінювання у багатозв’язних квазіоптичних системах з періодичними неоднорідностями. Теоретичні методи дослідження, котрі використовуються в роботі, засновані на раніше досліджених класичних прикладах дифракційної електроніки в наближенні до заданого струму, та досліджена взаємодія гармоніки дифракційно-черенковського випромінювання у багатозв’язних квазіоптичних системах з періодичними неоднорідностями. Робота викладена на 84 сторінках, в тому числі включає 28 малюнків, 3 таблиці та список літератури з 45 джерел.
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46

Oreper, Daniel (Daniel G. ). "High resolution in-vivo electrode localization using microfocal X-rays." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37082.

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Thesis (M. Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.<br>Statement of responsibility "by Daniel Oreper" taken from abstract, p. 1. Leaf 109 blank.<br>Includes bibliographical references (leaf 108).<br>Neuroscientists lack the ability to perform in-vivo electrode localization with high accuracy, especially in deep brain structures. The design, implementation and testing of a microfocal x-ray stereo system that offers an efficient, accurate, and relatively low-cost solution this localization problem is presented. The results
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47

Raji, Aravind. "Exploring the electronic and structural properties of tantalates and infinite-layer nickelates via electron microscopy and x-ray spectroscopy approaches." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP116.

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Les systèmes de matériaux tels que les oxydes de métaux de transition (TMO) présentent des fonctionnalités robustes, fortement liées à leurs degrés de liberté électroniques et structurels. Il est possible de stabiliser de nouvelles structures TMO présentant de nouvelles propriétés en contrôlant ces degrés de liberté, comme c'est le cas des nickelates supraconducteurs à couche infinie (IL), des gaz d'électrons bidimensionnels (2DEG) dans le KTaO₃, etc. Dans cette thèse, une combinaison de techniques complémentaires a été employée, à savoir la microscopie électronique à transmission à balayage (
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48

Tarbutt, Michael Roy. "Spectroscopy of few-electron highly charged ions." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365339.

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49

Skoglund, Lindberg Peter Anders. "Electron-Impact Liquid-Jet Water-Window X-ray Sources." Licentiate thesis, KTH, Biomedicinsk fysik och röntgenfysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-28622.

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This Thesis describes the development and characterization of a soft x-ray liquidjet-anode electron-impact source. With a water-jet target the primary emission is the O Kα line at 525 eV. This is close to the lower edge of the water-window, a spectral region lacking simple laboratory sources. In the hard x-ray regime electronimpact microfocus sources have matured and are simple, stable, reliable, and inexpensive. It would be beneficial if this source concept could be used also for soft x-ray generation.   Spectral measurements of a 120 W, 30 keV electron beam focused on a 20 μm water jet show
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50

Louca, P. "From X-ray structure factors to electron-density distributions." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374638.

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