Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (leaves 90-98).

Thesis (Ed. D.)--University of Oklahoma, 1995. / Includes bibliographical references (leaves 151-164).

Thesis (M. Ed.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 159-166).

Thesis (M. Ed.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 97-101).

Thesis PlanB (M.S.)--University of Wisconsin--Stout, 2009. / Includes bibliographical references.

Thesis (Ed. S.)--Marshall University, 2003. / Title from document title page. Document formatted into pages; contains ix, 73 p. Includes vita. Includes bibliographical references (p. 50-53).

Thesis PlanB (M.S.)--University of Wisconsin--Stout, 2009. / Includes bibliographical references.

<p> X-ray absorption spectroscopy (XAS) is a powerful technique to determine the structure and function of molecules. It provides element-specific information on geometry, chemical bonding, oxidation state, and spin state, and its applications range from biology to material science. For dilute samples, XAS is measured by partial fluorescence yield (PFY), where the intensity of a weak fluorescence line is recorded as a measure of absorption as the energy of the incident x-ray beam is scanned across an absorption edge of the element of interest. PFY increases the sensitivity for XAS if an x-ray detector is used that can efficiently separate the small fluorescence signal of interest from the x-ray background due to other elements in the sample. </p><p> This dissertation describes the development of a high-resolution x-ray detector based on arrays of superconducting tunnel junctions (STJs). It is cooled to its operating temperature below 0.3 K with a liquid-cryogen-free adiabatic demagnetization refrigerator cryostat, and offers more than an order of magnitude improvement in energy resolution over conventional Ge- or Si-based solid state detectors. For operation in XAS experiments at a synchrotron, the STJ detector array is held at the end of a cold finger that can be inserted into an ultra-high vacuum endstation. This dissertation describes the design and performance of the STJ x-ray spectrometer, and demonstrates its use in PFY-XAS experiments in metallo-organic compounds at the Advanced Light Source synchrotron.</p>

In recent, high intensity laser pulse interaction with solid density matter has been studied in several laboratory and facilities. Multi-MeV proton and ion beams from plasma produced by this interaction is one important application research area of HEDP. In this thesis, the basic theory of hot electron generation associated with proton acceleration will be introduced. A basic proton acceleration mechanism called TNSA will be introduced with supplemental free plasma expansion model. To investigate proton acceleration at the Texas Petawatt Facility, the experimental set up and target alignmen will be introduced in the chapter 5. While the analysis of data acquired from this experiment is still unfinished, a brief result with RCF image will be introduced in chapter 6. / text

After winning the TAPPS Division III State Championship in 2010, the Regents School of Austin Knights set out to defend their title as the top high school football team in their division. After losing their star players from the year before, dealing with injuries and personal struggles throughout the season the Knights responded and made it to the state title game only to lose to Bullard Brook Hill. / text