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 10 of 10 for “"X-ray optics"”.
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Crack Patterns in Thin Films and X-ray Optics Thermal Deformations
… widely used in many applications, ranging from X-ray optics to microelectronic devices. In service, the X-ray optics elements are exposed to the X-ray beam, which heats up the structure resulting in the thermal deformations, and consequently in distortions of the reflective surface. In addition, …
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Fabrication and characterization of multilayers for focusing hard x-ray optics
… thicknesses and their performance as x- ray mirrors for the next generation of focusing telescopes. Different material combinations were studied for the first time employing a consistent methodology for the DC magnetron sputtering growth of the multilayers and their characterization by …
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HEFT measurement of the hard X-ray size of the Crab Nebula and the hard X-ray optics of the Nuclear Spectroscopic Telescope Array (NuSTAR)
… (HEFT) and the Nuclear Spectroscopic Telescope Array (NuSTAR). HEFT is the first experiment done with imaging telescopes in the hard X-ray energy band (~20-70 keV). I briefly describe the instrument and the balloon campaign. The inflight calibration of the Point Spread Function (PSF) is done with …
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Development of a beamline system for characterization of X-ray and neutron optics
… of small diameter multilayer coated Wolter optics. These optics, used for imaging of x-rays and neutrons, have numerous applications in areas such as medicine, fusion research and planetary science. The beamline consists of a divergent x-ray source, an energy sensitive detector, and a set of …
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Protein crystals as templates for materials chemistry
… novel patterned materials could find use as x-ray optics, sensors, or x-ray diffraction standards.
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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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Ultrafast Transient Absorption and Multi-Wave Mixing Spectroscopies in the Extreme Ultraviolet and Soft X-RAY Regimes
… a delegate vacuum setup, special EUV and x-ray optics, photon budget and dispersion management.
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X-ray microscope performance enhancement through control architecture change
… was the subject of this work. It consists of X-ray optics stage group that focuses the X-ray beam as a source-size-limited spot onto a sample held on the sample stage group. The controller algorithms that are used should provide the closed-loop with robust stability, large bandwidth, high …
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Structural dynamics of photoexcited nanolayered perovskites studied by ultrafast x-ray diffraction
… techniques using ultrashort optical and x-ray pulses are employed. The experimental setups include table-top sources as well as large-scale facilities such as synchrotron sources. At the core of my work lies the development of a linear-chain model to simulate and analyze the photoexcited …
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High-bandwidth high-precision robust x-ray microscopy - a control systems approach
… positioning stages of Velociprobe X-ray microscope at Advanced Photon Source (APS) at Argonne National Laboratory (ANL) is presented. In particular, our focus is on maintaining a precise position of the optics scanning stages in the XY lateral plane relative to the sample stages, …