Dissertations / Theses on the topic 'Neutron diffraction'
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Wang, Duan Qiang. "Strain measurement using neutron diffraction." Thesis, Open University, 1996. http://oro.open.ac.uk/57651/.
Full textLobban, Colin. "Neutron diffraction studies of ices." Thesis, University College London (University of London), 1998. http://discovery.ucl.ac.uk/10065569/.
Full textTait, Kimberly. "Inelastic Neutron Scattering and Neutron Diffraction Studies of Gas Hydrates." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194926.
Full textMorrell, Jonathan T. "Experimental evaluation of polychromatic neutron diffraction." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112368.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 57-58).
Neutron diffraction is a technique that allows scientists to measure the arrangement and motions of atoms in a crystalline lattice by observing neutrons scattering at angles that are characteristic of the interatomic distances of the crystal. This is useful for studying the response of crystals to stress, irradiation, or for observing their phases. This thesis implements and analyzes a technique known as polychromatic neutron powder diffraction, which has the potential to be used by an instrument to make many simultaneous neutron diffraction measurements. In this experiment, powder diffraction patterns were measured with a diffractometer in polychromatic mode, using both angle-dispersive and wavelength-dispersive scans of a silicon powder. The intensity and resolution of the Bragg peaks with the instrument in this configuration were compared to Bragg peaks measured by the same instrument in a monochromatic configuration. The intensity of the polychromatic mode was only comparable to the monochromatic mode with looser collimation, which had the consequence of increasing the widths of the measured peaks. This resulted in a polychromatic signal intensity that was greater than the monochromatic signal intensity, and a Bragg peak that was wider than the monochromatic Bragg peak. The effects of the collimators and the sample to detector distances were quantified in experiment and in ray-tracing simulations. While both the monochromatic and the polychromatic configurations had similar counting rates in this experiment, they were both limited by the high background due to the open-beam geometry. A successful implementation of a polychromatic instrument would require substantial filtering and shielding to overcome this effect.
by Jonathan T. Morrell.
S.B.
Dashjav, Enkhtsetseg, Raphael Hermann, and Frank Tietz. "High-temperature Neutron Diffraction of Li1.2Al0.2Ti1.8P3O12." Diffusion fundamentals 21 (2014) 21, S.1-2, 2014. https://ul.qucosa.de/id/qucosa%3A32431.
Full textReynolds, John Melton. "Neutron diffraction and reflection studies of superconductors." Thesis, University of Oxford, 1998. http://ora.ox.ac.uk/objects/uuid:bab01bde-f42e-41ca-830e-655d41499408.
Full textIbberson, Richard M. "Neutron power diffraction studies of molecular crystals." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357200.
Full textCriswell, Leah. "Neutron diffraction and quasielastic neutron scattering studies of films of N-alkanes and a branched alkane absorbed on graphite." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6010.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 11, 2008) Includes bibliographical references.
Unruh, Troy Casey. "Development of a neutron diffraction system and neutron imaging system for beamport characterization." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/2324.
Full textFilippone, Roberto. "Martensite characterization in multiphase steels using neutron diffraction." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32958.
Full textThree low carbon steels, comprised of a dual-phase, ferrite-martensite microstructure, were used in this study. Two diffraction methods were investigated; a direct deconvolution of the martensite peaks from the ferrite peak, and an indirect determination of martensite volume fraction from ferrite peak broadening. Lastly, mechanical properties were investigated in order to determine if a correlation exists with ferrite peak broadening.
The results indicate that the martensite phase has a prominent strain broadening effect in diffraction. The nature of this strain effect was hypothesized and a model was developed to confirm the findings. Finally, tensile testing showed that the mechanical properties were dependent on peak broadening and martensite volume fraction.
Clarke, Stuart James. "Neutron diffraction studies of silicate and borate glasses." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493994.
Full textDong, Bo. "Neutron diffraction studies of lithium-based battery materials." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/19190/.
Full textDonnelly, Mary-Ellen. "Neutron diffraction of hydrogen inclusion compounds under pressure." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/31471.
Full textBianchini, Matteo. "In situ diffraction studies of electrode materials for Li-ion and Na-ion batteries." Thesis, Amiens, 2015. http://www.theses.fr/2015AMIE0022/document.
Full textThis work aims at studying electrode materials for Li-ion and Na-ion batteries as they function inside batteries. Diffraction is the mainly used technique, exploiting neutrons, X-Rays and synchrotron radiation (SR), to obtain insights on the structural evolution of such materials as Li+ or Na+ are inserted/extracted from their framework. We adopted a combined approach of ex situ, in situ and operando measurements to extract a maximum of information from our studies. At first, we designed an electrochemical cell for in situ neutron powder diffraction (NPD) measurements, featuring a “neutron-transparent” (Ti,Zr) alloy; this cell, joined to others previously developed in our group, gave us a complete set of tools to perform our studies. We demonstrated the feasibility of operando NPD using LiFePO4, showing good electrochemical performances and high-quality NPD patterns for Rietveld structural refinements. Then we carried out detailed studies of spinels Li1+xMn2-xO4 (x = 0, 0.05, 0.10) and LiNi0.4Mn1.6O4: we reported phase diagrams, structural evolutions and subtle parameters as lithium's behavior inside the spinel framework, or thermal displacement parameters, directly upon cycling. Complementary use of SR shed light on other features, as the nature of the ordered phase Li0.5Mn2O4. Our combined studies concerned other promising electrode materials: LiVPO4O and Na3V2(PO¬4)2F3. Both revealed complex behaviors upon Li+/Na+
Ye, Hong. "X-ray diffraction, neutron diffraction and circular dichroism studies of nucleic acids and proteins." Thesis, Keele University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245601.
Full textRovira, Esteva Muriel. "Short-range order in disordered phases using neutron diffraction." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/283110.
Full textLa difracció de neutrons és una tècnica molt potent que permet sondar l'estructura de fases desordenades en un ventall d'escales de longitud. Tanmateix, degut a la complexitat inherent d'aquestes fases desordenades, l'anàlisi de la informació que es desprèn de les dades experimentals no és evident. En aquest treball es presenten diversos mètodes alternatius que permeten treure el màxim profit de les mesures de difracció de neutrons, així com de les configuracions moleculars obtingudes en simulacions de dinàmica molecular o del modelatge de les dades. Aquests mètodes consisteixen principalment en un enfocament bayesià en l'ajust de les estructures moleculars mesurades amb difracció de neutrons, i en una anàlisi multidimensional de les funcions de distribució de probabilitat de l'estructura molecular obtingudes en simulacions o tècniques de modelatge de dades, en comptes del mitjanat de diverses variables estàndard. Aquestes metodologies s'apliquen a la investigació de diversos sistemes desordenats per tal de resoldre una sèrie de qüestions obertes: l'origen de la transició líquid-líquid en el trans-1,2-dicloroetà (C2Cl2H2), l'extrema fragilitat del vidre orientacional del 1,1,2,2-tetracloro-1,2-difluoroetà (F-112, C2Cl4F2), la paradoxa de la densitat local en el tetraclorur de carboni (CCl4), i els rols de les interaccions estèrica i electrostàtica en l'ordre de curt abast de líquids de molècules quasitetraèdriques, en particular el triclorobromometà (CBrCl3) i el dibromodiclorometà (CBr2Cl2). Addicionalment, també s'hi inclou un breu repàs del marc teòric de la difracció de neutrons en sistemes desordenats, així com dels aspectes pràctics de l'equip experimental i del tractament de dades necessari, per tal que els investigadors interessats disposin d'una visió general completa sobre tema.
Cheyne, Simon M. "Total neutron diffraction studies of disordered cyanide crystal structures." Thesis, University of Reading, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402196.
Full textHall, Christopher David. "Neutron diffraction and molecular dynamics studies of fluid halocarbons." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316495.
Full textBourke, Mark A. M. "Residual stress measurement in engineering components by neutron diffraction." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47782.
Full textWilliams, Anthony James. "Synthesis and neutron diffraction studies of manganese oxide perovskites." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615786.
Full textGuthrie, Malcolm. "Developments in single-crystal neutron diffraction at high pressure." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/13969.
Full textHamacher, Klaus A. "Neutron diffraction studies of organic and magnetic layered structures /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9901240.
Full textMcKnight, Thomas Kevin. "An Improved Flexible Neutron Detector For Powder Diffraction Experiments." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/463.
Full textPang, Judy Wai Lan. "A neutron diffraction study of intergranular strains and plastic deformation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0006/NQ41267.pdf.
Full textFowkes, Amelia Jane. "High resolution powder neutron diffraction in solid state inorganic chemistry." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299525.
Full textParrot, Ingrid Michele. "X-ray and neutron diffraction studies of fibrous biological molecules." Thesis, Keele University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423428.
Full textWilson, Claire. "Structure-reactivity relationships through X-ray and neutron diffraction studies." Thesis, Durham University, 1995. http://etheses.dur.ac.uk/5314/.
Full textHayama, Shusaku. "Neutron and X ray diffraction studies of metal amine solutions." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249712.
Full textXu, Xuelian. "X-ray and neutron diffraction studies of organic molecular crystals." Thesis, University of Strathclyde, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416190.
Full textVan, Duijn Joost. "Powder neutron diffraction studies of some magnetic boron-containing compounds." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620967.
Full textPope, Lisa Helen. "X-ray and neutron fibre diffraction studies of deoxyribonucleic acid." Thesis, Keele University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388355.
Full textBinns, Jack. "Development of high-pressure single-crystal neutron diffraction on KOALA." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/20416.
Full textAlianelli, Lucia. "Characterization and modelling of imperfect crystals for thermal neutron diffraction." Université Joseph Fourier (Grenoble), 2002. http://www.theses.fr/2002GRE10170.
Full textAl-Hayalee, Yaseen Ahmed. "Neutron high angle fibre diffraction of biological and synthetic polymers." Thesis, Keele University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357084.
Full textBachra, Bilber. "Studies of the structure of oxide glasses by neutron diffraction." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359050.
Full textGarawi, M. S. "Thermal neutron scattering by some molecular liquids." Thesis, University of Kent, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378356.
Full textEngland, Roger D. "Measurement Of Residual Stresses in Diesel Components using X-ray, Synchrotron, and Neutron Diffraction." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin966625751.
Full textLee, Jang Seob. "Solid-state NMR, X-ray diffraction and neutron diffraction studies on organic guest/zeolite ZSM-5 complexes." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31380.
Full textScience, Faculty of
Chemistry, Department of
Graduate
Boysen, Hans, Ines Kaiser-Bischoff, and Martin Lerch. "Anion diffusion processes in O- and N-mayenite investigated by neutron powder diffraction: Anion diffusion processes in O- and N-mayenite investigated by neutron powder diffraction." Diffusion fundamentals 8 (2008) 2, S. 1-7, 2008. https://ul.qucosa.de/id/qucosa%3A14148.
Full textDavies, Edward. "Neutron diffraction studies of amorphous ice and amorphous ice co-deposits." Thesis, University of Kent, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305366.
Full textDutta, Monojit. "Residual stress measurement in engineering materials and structures using neutron diffraction." Thesis, Open University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301945.
Full textCoates, Leighton. "Quasi laue neutron and atomic resolution x-ray diffraction of endothiapepsin." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249945.
Full textJupe, Andrew Charles. "Development of X-ray and neutron diffraction methods for cement research." Thesis, Birkbeck (University of London), 2000. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392173.
Full textPayne, Stephen John. "Critical scattering and time resolved neutron diffraction studies of phase transitions." Thesis, Keele University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245355.
Full textShotton, Mark William. "DNA structure investigated using complementary x-ray and neutron fibre diffraction." Thesis, Keele University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245356.
Full textBianchi, Laurent. "The structure of molecular liquids : neutron diffraction and molecular dynamics simulations." Thesis, University of Dundee, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312329.
Full textMcNally, Graham Michael. "High pressure synthesis and neutron diffraction studies of new magnetic manganites." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31185.
Full textNoor, Faizani M. "Advanced techniques for extracting structural information from neutron diffraction of glasses." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/82169/.
Full textBadyal, Yaspal Singh. "The structure of binary molten salt mixtures : a neutron diffraction study." Thesis, University of Leicester, 1994. http://hdl.handle.net/2381/34931.
Full textCastellan, John-Paul Adrian Gaulin B. D. "X-ray and neutron diffraction studies of strongly correlated electron systems." *McMaster only, 2007.
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