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 41 for “"x-ray studies"”.
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X-ray Studies of Lattice Dynamics
Analysis of thermal diffuse scattering of x-rays (TDS) has recently shown great promise as a tool for phonon studies, complementing more traditional neutron scattering techniques. Quasi-elastic x-ray scattering from thermally populated phonon modes has been used to study lattice dynamics and phonon …
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X-ray studies of supernova remnants
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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X-ray studies of strained overlayers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1989.
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X-ray studies of gallium arsenide-silicon heterostructures
… the film and at the interface. We employ x-ray scattering to explore the structural properties of these layered materials grown by molecular beam epitaxy. The thermal expansion of thick GaAs films on nominal Si(001) is measured with x-ray diffraction. The gallium arsenide film exhibits an …
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Optical & X-ray Studies of Ultraluminous X-ray Sources
Ultraluminous X-ray Sources (ULXs) are point like X-ray sources situated external to the nucleus of their host galaxy, with inferred X-ray luminosities in excess of 10^{39} erg s^{−1} . Although first observed ∼ 30 years ago, these sources are yet to be fully understood. Some have suggested that …
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Optical and X-ray studies of newly discovered flare stars
… previously been reported on the Sun for Ha and X-ray lines of CaXIX and FeXXV, and symmetric and asymmetric broadening of the Balmer and Ca II H & K lines has also been observed at low time resolution (> 1 mm) before on dMe stars, but until this work, interpretation of these observations has been …
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X -Ray Studies of Metal Thin Film Growth on Semiconductors
X-ray reflectivity measurements have been performed for an investigation of the structure of Ag films deposited in situ on Ge(111) over the thickness range of 3--15 monolayers. The films deposited at a substrate temperature of 110 K are not well ordered, but become well ordered upon annealing, as …
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High Pressure X-Ray Studies on Structure and Cohesive Energy
Made available in DSpace on 2014-12-08T23:18:17Z (GMT). No. of bitstreams: 1 6612306.pdf: 3577328 bytes, checksum: 85074ff20d9ec2bad4f2b905519d8b90 (MD5) Previous issue date: 1966
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High Pressure X-Ray Studies of Binding and Crystal Structure
Made available in DSpace on 2014-12-08T23:18:18Z (GMT). No. of bitstreams: 1 6612374.pdf: 4298964 bytes, checksum: 2d8833406e6cd417cd75610149d7a960 (MD5) Previous issue date: 1966
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X-ray studies of metal thin film growth on semiconductors
Real time in situ synchrotron x-ray studies of continuous Pb deposition on Si(111)-(7 × 7) at 180 K reveal an unusual growth behavior. A wetting layer forms first to cover the entire surface. Then islands of a fairly uniform height of about five monolayers form on top of the wetting layer and grow …
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High Pressure X-Ray Studies on the Electronic Structure of Solids
Made available in DSpace on 2014-12-08T23:18:10Z (GMT). No. of bitstreams: 1 6511851.pdf: 4549668 bytes, checksum: 05cfb8c2158f21c5d19a3b1d1c829c53 (MD5) Previous issue date: 1965
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X-ray Studies of the Innermost Regions of Black Hole Accretion
… I present the results of my research on the X-ray spectra of accreting black holes. The content of this thesis can be broadly separated into two parts: Chapter 2-3 for stellar-mass black holes in X-ray binaries (XRBs) and Chapter 4-6 for supermassive black holes in active galactic nuclei (AGN). …
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Optical and X-ray studies of Be/X-ray binaries in the Small Magellanic Cloud
High-mass X-ray binaries (HMXBs) have proved to be some of the most interesting X-ray sources in the sky. The growing opulation of Small Magellanic Cloud (SMC) Be/X-ray binaries is monitored weekly with two 15ks RXTE observations. My thesis focuses on presenting the analysis of the X-ray data and …
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