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Dissertations / Theses on the topic 'SCATTERING LENGTHS'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Piatecki, Swann. "The Bose gas at large scattering lengths." Paris, Ecole normale supérieure, 2014. http://www.theses.fr/2014ENSUBS24.

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2

Baker, Troy. "Measurement of scattering lengths using K¦pi¦3 decay." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ63837.pdf.

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3

Langmack, Christian Bishop. "Universal Loss Processes in Bosonic Atoms with Positive Scattering Lengths." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385483878.

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4

Guttridge, Alexander. "Photoassociation of ultracold CsYb molecules and determination of interspecies scattering lengths." Thesis, Durham University, 2018. http://etheses.dur.ac.uk/12817/.

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This thesis reports the first measurements of the ground state binding energies of CsYb molecules and the scattering lengths of the Cs+Yb system. The knowledge gained from these measurements will be essential for devising the most efficient route for the creation of rovibrational ground state CsYb molecules. CsYb molecules in the rovibrational ground state possess both electric and magnetic dipole moments which opens up a wealth of applications in many areas of physics and chemistry. In addition, we present the setup of a crossed beam optical dipole trap and the investigation of precooling and

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5

Schröder, Hans-Christian. "Precise determination of the [Pi]N S-wave scattering lengths from pionic hydrogen /." [S.l.] : [s.n.], 1996. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=11760.

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6

Helmes, Christopher [Verfasser]. "K-K and pi-K Scattering Lengths at Maximal Isospin from Lattice QCD / Christopher Helmes." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1194464831/34.

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7

Webster, Stephen. "Prospects for Bose-Einstein condensation in caesium : cold collisions and dipole-force trapping." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325563.

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8

Wilcox, Eva. "Novel Neutron Detector for n-n Scattering Length Measurement." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd900.pdf.

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9

Zhang, Dongqing. "Aspects of cold bosonic atoms with a large scattering length." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1164823171.

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10

Langrock, Stefanie. "Measurement of the Rayleigh scattering length and background contributions during early data taking phases at SNO+." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/24647.

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SNO+ is a multipurpose neutrino experiment located at SNOLAB. Its key purpose is investigating the neutrinoless double beta decay of 130Te, amongst other physics goals such as solar and reactor neutrino oscillations. The success of the experiment depends on the understanding of the optical properties of the detection materials, as well as a good understanding of potential background contributions. The calibration system used to study the Rayleigh scattering properties of the detector is presented and methods to model the system in Monte Carlo simulations based on commissioning run data are int

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11

Reeder, D. Benjamin (Davis Benjamin) 1966. "Acoustic scattering by axisymmertic finite-length bodies with application to fish : measurement and modeling." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29252.

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Thesis (Ph. D.)--Joint Program in Applied Ocean Physics and Engineering (Massachusetts Institute of Technology, Dept. of Ocean Engineering and the Woods Hole Oceanographic Institution), 2002.<br>Includes bibliographical references (leaves 140-148).<br>This thesis investigates the complexities of acoustic scattering by finite bodies in general and by fish in particular through the development of an advanced acoustic scattering model and detailed laboratory acoustic measurements. A general acoustic scattering model is developed that is accurate and numerically efficient for a wide range of frequ

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12

Mo, Haiding. "Neutron and x-ray scattering study of intermediate-length alkane films adsorbed on solid surfaces /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3144441.

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13

Yang, Hongwei. "THE N-P SCATTERING CROSS SECTION FROM 90 KEV TO 1.8 MEV." UKnowledge, 2015. http://uknowledge.uky.edu/physastron_etds/33.

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There have been very few measurements of the total cross section for n-p scattering below 500 keV. In order to differentiate among NN potential models, improved cross section data between 20 and 600 keV are required. We measured the n-p and n-C total cross sections in this energy region by transmission; a collimated neutron beam was passed through CH2 and C samples and transmitted neutrons were detected by a BC-501A deuterated liquid scintillator. Cross sections were obtained by taking the ratios of normalized neutron yields with the samples in the beam and with no sample in the beam. Both bet

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14

Masetti, Lucia [Verfasser]. "Measurement of the Ke4 form factors and of the pi-pi scattering length alpha00 / Lucia Masetti." Aachen : Shaker, 2007. http://d-nb.info/1170527108/34.

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15

Saliba, Michael Angelo. "A precision measurement of the neutron-neutron scattering length from the reaction [pi]-d -> [gamma] nn." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0015/NQ27236.pdf.

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16

Jones, Joseph. "The application of scattering techniques at complementary length scales to structural studies of clathrin complexes in vitro." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/91478/.

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Clathrin is a well-studied molecule yet its assembly properties have been characterised only in fairly simple biochemical terms to date. When clathrin is isolated for study in vitro, certain important aspects of its in vivo functionality are conserved: • purified clathrin units can be induced to assemble, reversibly, into cage-like forms that exhibit an array of polygonal binding motifs, similar to those observed in a vesicle's coat complex; • the artificial clathrin cages so produced are found to be heterogeneous, resulting in particles of different size according to the number of units each

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17

Boulet, Antoine. "Density functional theory for Fermi systems with large s-wave scattering length : application to atomic and nuclear physics." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS212/document.

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Dans ce travail de thèse, des théories de type fonctionnelle de la densité sont développées pour des systèmes en interaction forte possédant une longueur de diffusion en onde s, notée as, anormalement grande. Les gaz atomiques ou la matière neutronique sont des exemples physiques de tels systèmes. La théorie des perturbations à N-corps est tout d'abord utilisée pour décrire les systèmes de fermions dilués. Cette approche conduit par exemple à la fonctionnelle de Lee-Yang qui est valide dans une plage de densité très restreinte lorsque la longueur de diffusion en onde s devient grande. Pour éte

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18

Aslan, Gokhan. "Cepstral Deconvolution Method For Measurement Of Absorption And Scattering Coefficients Of Materials." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608021/index.pdf.

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Several methods are developed to measure absorption and scattering coefficients of materials. In this study, a new method based on cepstral deconvolution technique is proposed. A reverberation room method standardized recently by ISO (ISO 17497-1) is taken as the reference for measurements. Several measurements were conducted in a physically scaled reverberation room and results are evaluated according to these two methods, namely, the method given in the standard and cepstral deconvolution method. Two methods differ from each other in the estimation of specular parts of room impulse responses

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19

Breuer, John. "Cold elastic collisions of sodium and rubidium." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29690.

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Thesis (M. S.)--Physics, Georgia Institute of Technology, 2010.<br>Committee Chair: Kennedy, Brian; Committee Member: Chapman, Michael; Committee Member: Zangwill, Andrew. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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20

Fazzini, Serena. "One dimensional extended Hubbard model: two-particle bound states and resonances." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7614/.

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In questo lavoro di tesi è stato svolto uno studio analitico sul modello di Hubbard esteso unidimensionale al fine di osservare la presenza di eventuali risonanze che possano dare origine alla formazione di stati legati di due particelle. L'esistenza di uno stato legato stabile ha suscitato grande interesse negli ultimi anni, sia in ambito teorico che sperimentale, poichè è alla base di molti fenomeni che vengono osservati nei sistemi a molti corpi a basse temperature, come il BCS-BEC crossover. Pertanto si è ritenuto utile studiare il problema a due corpi nel modello di Hubbard esteso, che in

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21

Masetti, Lucia. "Measurement of the K± -> p+p-e±v(-)e [K ± pi + pi - e + - (-) v e] form factors and of the pp [pi pi] scattering length a00." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=981815189.

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22

Salzwedel, Jai. "Lambda femtoscopy in √s_NN = 2.76 TeV Pb-Pb collisions at ALICE." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483568167792529.

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23

Majumdar, Madhabi. "Elastic Constants, Viscosities and Fluctuation Modes of Certain Bent-Core Nematic Liquid Crystals Studied by Dynamic Light Scattering and Magnetic Field Induced Orientational Distortion." Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1321991835.

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24

Nguyen, Thi Minh-Ha. "Molecular recognition of ubiquitin and Lysine 63 linked diubiquitin by STAM2 : the effect of the linkers length and flexibility." Thesis, Lyon, 2019. https://n2t.net/ark:/47881/m6668chz.

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Les interactions protéine-proteine sont considérées comme un domaine de recherche important puisqu’elles contrôlent la plupart des processus cellulaires. Chez les cellules eucaryotes, les protéines multi-domaines (MDP), constituées d’au moins deux domaines, représentent plus de 70 % des protéines. Au sein d’une MDP, ces domaines peuvent être identiques ou différents et sont reliés par un segment intrinsèquement désordonné de longueur et de flexibilité variable. Ces protéines peuvent alors adopter de multiples conformations dans l’espace et interagir de manière spécifique avec leurs partenaires

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25

Seipt, Daniel. "Strong-Field QED Processes in Short Laser Pulses." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-103705.

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The purpose of this thesis is to advance the understanding of strong-field QED processes in short laser pulses. The processes of non-linear one-photon and two-photon Compton scattering are studied, that is the scattering of photons in the interaction of relativistic electrons with ultra-short high-intensity laser pulses. These investigations are done in view of the present and next generation of ultra-high intensity optical lasers which are supposed to achieve unprecedented intensities of the order of 10^24 W/cm^2 and beyond, with pulse lengths in the order of some femtoseconds. The ultra-high

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26

Teles, Rafael Poliseli. "Comportamento de condensados de Bose-Einstein aprisionados, na presença de vórtices e modos coletivos." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-16062015-142359/.

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A extensão dos fenômenos quânticos em escala macroscópica é responsável por toda uma classe de efeitos como a supercondutividade, superfluidez, e condensação de Bose-Einstein, as quais desempenham um papel central na física ao longo do século passado. A produção dos primeiros condensados de Bose-Einstein tornou possível a realização de experimentos envolvendo fenômenos quânticos macroscópicos com um nível sem precedentes de controle dos parâmetros externos. As correntes persistentes em condensados estão intimamente relacionados com a nucleação de vórtices quantificados, que são defeitos topoló

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27

Burda, Jan. "Návrh a měření parametrů akustických difúzních prvků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377009.

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This work focuses on the issue of acoustic diffusers. The introductory chapter describes the necessary theory of the sound distribution through enclosed space. Acoustic fields are also described. A description of the different diffusion element types and theirs design methods follows. It focuses mainly on design, which uses pseudo-random mathematical sequences. The aim of the work is to produce several types of acoustic diffusors and to verify their diffusion properties by means of measurements. The work uses the AFMG Reflex to simulate the diffusion properties of the proposed elements. Furthe

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28

Postnikov, Sergey A. "Topics in the Physics and Astrophysics of Neutron Stars." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1259174094.

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29

Clement, Pierre. "Solutions aux limites des interrogateurs B-OTDR pour la surveillance d'infrastructures : augmentation de la portée de mesure et décorrélation des paramètres de température et de déformation." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT042.

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Cette thèse porte sur l’étude des systèmes de mesure répartie de la rétrodiffusion Brillouin dans une fibre optique, que l’on nomme B-OTDR et qui sont sensibles à la température et à la déformation de la fibre. Les solutions d'interrogateurs actuelles permettent l'instrumentation de grandes infrastructures. Cependant, il existe des limites, inhérentes au phénomène physique utilisé, qui ne permettent pas d'adresser certaines applications spécifiques. Ces limites portent sur la distance de mesure maximale accessible par ces interrogateurs mais également sur la décorrélation de la mesure des para

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30

Hajji, Mohammed Saïd. "Etude comparative de l'association hydrophobe en solution aqueuse de tensioactifs anioniques et cationiques et de divers alcane-diols et alcane-triols par mesures des masses volumiques, de la diffusion élastique et quasi-élastique de la lumière et des." Paris 13, 1987. http://www.theses.fr/1987PA132016.

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31

Saidi, Mohamed. "Mesure et analyse de l'état de déformation et d'endommagement interne dans les composites à matrice cimentaire utilisés pour le renforcement des structures de génie civil." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSE1092.

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Les composites à matrice cimentaire et renforts textiles, du fait de leur compatibilité mécanique, environnementale et esthétique, sont utilisés sur une large échelle pour la réhabilitation et le renforcement du patrimoine bâti et des ouvrages du génie civil. Sous l'effet de sollicitations mécaniques ou environnementales, les phénomènes d'interaction et d'endommagement entre le renfort textile et la matrice cimentaire s'avèrent plus complexes que dans le cas des composites à matrice polymères. Celles-ci sont liées principalement au comportement fissurant du composite, à la nature fragile de la

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32

"Precision measurement of the coherent scattering length of gaseous helium-four using neutron interferometry." Tulane University, 2019.

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archives@tulane.edu<br>This dissertation details a measurement of the n-$^{4}$He coherent scattering length to be $b_{4\rm{He}} = [3.0982 \pm\: 0.00214\; (\rm{stat}) \pm\: 0.00077\; (\rm{sys})]$ fm utilizing a perfect silicon crystal neutron interferometer. This measurement provides over a factor of 10 improvement in precision and differs by $0.162$ fm compared to the most commonly used value. Neutron interferometry provides a tool for precision scattering lengths measurements for a variety of isotopes. Examples include coherent scattering length measurements for $^{1}$H, $^{2}$H, $^{3}$He and

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33

Geller, David. "Head-on Scattering of a tubular cylinder of finite length for radar target identification purposes." Thesis, 1985. http://hdl.handle.net/10945/21360.

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34

Shumbula, Ndivhuwo Prince. "Surface enhanced raman scattering dependence on chain-length of 1-alkanethiols on gold and silver nanoparticles." Thesis, 2018. https://hdl.handle.net/10539/25874.

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A dissertation submitted for the partial fulfillment of the requirements for the degree of Master of Science in Chemistry Faculty of Science University of the Witwatersrand<br>Surface enhanced Raman spectroscopy (SERS) is a surface sensitive technique through which the Raman signal of molecules adsorbed on a metallic surface is enhanced. It is a molecular vibrational technique which has evolved from the classic Raman spectroscopy in early 1970s. This technique is widely used for identification of solid, liquid and gas analytes. It also enables a sensitive detection of single molecule and als

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35

Baldwin, Jesse. "Improved Models for the Potential Energy Functions of the Ground Singlet and Lowest-Lying Triplet States of the Cesium Dimer." Thesis, 2012. http://hdl.handle.net/10012/6872.

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The Morse/Long Range (MLR) potential has become one of the most reliable and highly used potential energy functions for diatomic molecules. It includes the theoretical long range behaviour that diatomic molecules are known to exhibit as they approach the dissociation limit. Heavy alkali metals with adjacent electronic states often exhibit strong coupling between the spin and orbital angular momentum. The ground state X¹Σg⁺ and the lowest lying triplet state aᶟΣᵤ⁺ of Cs₂ exhibit such coupling effects and as a result, modeling the highest vibrational states of these states is a non-trivial probl

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36

Seipt, Daniel. "Strong-Field QED Processes in Short Laser Pulses: One- and Two-Photon Compton Scattering." Doctoral thesis, 2012. https://tud.qucosa.de/id/qucosa%3A26464.

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The purpose of this thesis is to advance the understanding of strong-field QED processes in short laser pulses. The processes of non-linear one-photon and two-photon Compton scattering are studied, that is the scattering of photons in the interaction of relativistic electrons with ultra-short high-intensity laser pulses. These investigations are done in view of the present and next generation of ultra-high intensity optical lasers which are supposed to achieve unprecedented intensities of the order of 10^24 W/cm^2 and beyond, with pulse lengths in the order of some femtoseconds. The ultra-high

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37

Matiwane, Aphiwe. "Neutron tunneling in nanostructured systems: isotopical effect." Diss., 2018. http://hdl.handle.net/10500/25095.

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Tunneling phenomenon has been studied since the time of Sir Isaac Newton. In the case of neutron tunneling phenomenon, it is the quantum mechanics wave-particle duality which manifests itself. In this case, particularly, the neutron wave-packet under total reflection condition suffers the so-called frustrated total reflection as known in standard optics. More accurately, this tunneling phenomenon shows itself via sharp dips in the plateau of total reflection. The prerequisite to observe such quantum mechanics phenomenon lies within a thin film Fabry-Perot resonator configuration. This thin fil

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38

Masetti, Lucia [Verfasser]. "Measurement of the K± → π+π-e±v(-)e [K ± pi + pi - e + - (-) v e] form factors and of the ππ [pi pi] scattering length a00 / Lucia Masetti". 2006. http://d-nb.info/981815189/34.

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39

Κατσένου, Νικολίτσα. "Κατασκευή και αξιολόγηση συσκευής μετρήσεων ανακλαστικότητας ακτινών Χ". Thesis, 2008. http://nemertes.lis.upatras.gr/jspui/handle/10889/831.

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Η εργασία αυτή περιγράφει αναλυτικά την κατασκευή και αξιολόγηση πειραματικής διάταξης ανακλαστικότητας ακτίνων-Χ, που πραγματοποιήθηκε στο Εργαστήριο Φυσικής Στερεάς Κατάστασης του τμήματος Φυσικής του Πανεπιστημίου Πατρών. Με τη βοήθεια αυτής της πειραματικής διάταξης θα είναι εύκολος ο καθορισμός των χαρακτηριστικών ιδιοτήτων επιφανειών καθώς επίσης και η μελέτη υμενίων τα οποία έχουν προσροφηθεί σε υποστρώματα. Στο πρώτο κεφάλαιο της εργασίας παρουσιάζονται οι βασικές σχέσεις υπολογισμού της ανακλαστικότητας καθώς και η μέθοδος ανάλυσης των πειραματικών αποτελεσμάτων. Στο επόμενο κεφ

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