Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 556 for “"synchrotron"”.
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3D detectors for synchrotron applications
… improve X-ray diffraction measurements at synchrotrons such as Diamond Light Source. This would allow these experiments, for example, to determine the structures of biological molecules more accurately. However, before 3D devices can be used in practical experiments, their design and …
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Synchrotron dendrochemistry: Exploring the comparison of multi-dimensional elemental analysis methodologies on tree cores using synchrotron techniques
… scans. Determining a methodology of conducting synchrotron dendrochemistry is important because there is little-to-no research on the best parameters to use to obtain meaningful, repeatable results. Using the IDEAS beamline at the CLS synchrotron allowed us to test XRF scanning parameters on …
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Synchrotron Based Infrared Microspectroscopy of Carbonaceous Chondrites.
… (CM2), with micron spatial resolution using synchrotron-based imaging micro-FTIR spectroscopy. Correlations based on absorption strength for various constituents are determined using statistical correlation analysis. Silicate band is found to be positively correlated with stretching modes of …
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Surface-Enhanced Spectroelectrochemistry using Synchrotron Infrared Radiation
… infrared source, namely highly focused synchrotron radiation. This thesis will present the characterization of a new internal reflection element which is fully compatible with ATR-SEIRAS and easily amenable to microfabrication. A custom horizontal microscope endstation will be developed …
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Considerations in the design and operation of synchrotron radiation beamlines (including a discussion on the properties of synchrotron radiation
The X-ray optics of synchrotron radiation beamlines are considered in this paper. The characteristics of synchrotron radiation which make it the premier source of light for studies in many regions of the electromagnetic spectrum are given. A chapter is devoted to the collimating, focusing and …
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Mark Oliphant FRS and the Birmingham Proton Synchrotron
… of particle accelerators known as “proton synchrotrons”. These provided beams of particles carrying energy an order of magnitude greater than previously available, permitting study of phenomena not previously accessible for examination. The first such machine to be proposed, funded, …
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Furanic Molecules: Multiplexed Synchrotron Photoionization Investigations and Aerosol Studies
… These experiments are carried out using synchrotron photoionization mass spectrometry (SPIMS) with an orthogonal time-of-flight spectrometer used for mass analysis at the Advanced Light Source of Lawrence Berkeley National Laboratory. CBS-QB3 calculated adiabatic ionization energies (AIE) …
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Developing Time-Resolved Synchrotron Infrared Spectroscopy for Spectroelectrochemical Measurements
… spectroelectrochemical platforms utilizing synchrotron infrared radiation (SIR) and time-resolved FTIR to study the kinetics of electrochemical reactions on second to millisecond scale with high chemical sensitivity. It will cover development of spectroelectrochemical cells and procedures …
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Probing diffuse galactic synchrotron emission using meerkat single dish data
… dominant foreground in our Galaxy which is the synchrotron emission had to be investigated, so they could be removed. This process also provided another validation for the existing data pipeline. As synchrotron emission is modeled using a power law, one way to probe said emission is to measure …
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Studies of Coherent Synchrotron Radiation with the Discontinuous Galerkin Method
… We apply these routines to the study of coherent synchrotron radiation, an important topic in accelerator physics. We build upon the published computational work of T. Agoh and D. Zhou in solving Maxwell's equations in the frequency-domain using a paraxial approximation which reduces Maxwell's …
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Chemical analysis of polymer blends via synchrotron X-ray tomography
… blends. The spatial images are acquired with synchrotron X-ray tomography because of its rapidity, good spatial resolution, large field-of-view, and elemental sensitivity. The spatial absorption data acquired from X-ray tomography experiments is converted to spatial chemical information via a …
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Three Dimensional Characterization of Deformation Twins Using Synchrotron X-Ray Diffraction
… novel experimental technique, three-dimensional synchrotron X-ray diffraction, on two different HCP metals and acquire a statistical data that can help us understand fundamentals of deformation twinning. After a literature review in chapter two, the steps used for preparing samples, conducting …
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Energy-domain synchrotron radiation Mössbauer source for physics under extreme conditions
… first part is dedicated to the development of a Synchrotron Mössbauer Source (SMS). This device allows energy domain Mossbauer spectroscopy to be performed on a sample under pressures above 100 GPa in laser heated diamond anvil cells. The second part is dedicated to studying the behavior of iron …
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Nondestructive Analysis of Advanced Aerospace Materials via Spectroscopy and Synchrotron Radiation
… environments. Characterization methods utilizing synchrotron X-Ray diffraction and spectroscopy can decrease the time required to determine an emerging material's readiness for application through intrinsic information on the material response and failure mechanisms. In this study, thermal barrier …
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Advanced Characterization of Nanocrystalline Materials by Synchrotron Radiation X-ray Diffraction
Synchrotron Radiation (SR) is one of the most powerful and versatile tools in the study nanomaterials, supporting a variety of analytical techniques. Among the possible spectroscopies, X-ray Diffraction (XRD) is especially suited to investigate materials at the nanoscale. However, to benefit of the …
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