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 12 of 12 for “"Nuclear Reaction Analysis"”.
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Nuclear reaction analysis cross-sections measurements for Boron and Carbon.
The aim of the project was to measure nuclear reaction cross-sections for selected light elements such as Boron and Carbon for the database at Radiation Utilisation Group of Necsa. Deuteron-fnduced and "He-induced reactions were performed at the 4MV Van de Graaff accelerator at detection angles of …
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Growth and Characterization of Carbon-Doped Aluminum(x) Gallium(1-X) Arsenide and Aluminum(x) Gallium(1-X) Phosphide
… (SIMS), double crystal x-ray diffraction and nuclear reaction analysis in an ion channeling geometry. It was revealed that the surface morphology and elemental composition of p$\sp+$ Al$\sb{\rm x}$Ga$\sb{\rm 1-x}$As were critically dependent on the growth conditions due to the existence of a …
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A novel measurment of net erosion and plasma-material interaction in plasma thrusters
… markers implanted in a thruster wall material. Nuclear Reaction Analysis (NRA) on the implanted material gives net erosion measurements while simultaneous Rutherford Backscattering Spectroscopy (RBS) quantifies the plasma retention and contamination in the surface layers. This insight into the …
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Trapping of hydrogen in Hf-based high κ dielectric thin films for advanced CMOS applications.
… oxygen deficiencies, elastic recoil detection analysis (ERDA) for quantifying hydrogen and nuclear reaction analysis (NRA) for quantifying carbon, X-ray diffraction (XRD) for measuring degree of crystallinity and X-ray photoelectron spectroscopy (XPS) were used to characterize these thin …
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Synthesis and characterization of atmospheric pressure chemically vapor deposited aluminum
… glow discharge optical emission spectroscopy and nuclear reaction analysis revealed that the coatings consisted essentially of pure aluminum (~99 at.%) with oxygen and carbon present as minor constituents. The coatings were characterized in terms of their morphological, structural, electrical, and …
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Recrystallisation Of Strontium Titanate
… situ by RBS measurements. Isotope substitution, nuclear reaction analysis and secondary ion mass spectrometry were utilised to reveal the uptake of hydrogen and oxygen into the implanted layer.;Hydrogen is identified as the species which penetrates to the crystal/amorphous interface. It is shown …
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Analyse struktureller Defekte in kristallinen Schichten
… Rutherford Backscattering Spectrometry (RBS), Nuclear Reaction Analysis (NRA) oder Channeling durchführen, um Festkörper zu analysieren. <br>In der vorliegenden Arbeit wurden Ionenstrahltechniken zur Element- und Strukturanalyse sowohl von Diamant-, als auch von Aluminiumnitridschichten …
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Directed Phase Separation of Polymer Blends on Binary-Patterned Polymer Brushes
… atomic force microscopy, optical microscopy, nuclear reaction analysis and secondary ion mass spectrometry, in order to determine the effect of the binary-patterned polymer brushes on the domain structure of the blend. The blend morphology was complex and reflected interactions between the …
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Deuterium Retention and Trapping in Polycrystalline Tungsten under Simultaneous Implantation of Deuterium with Helium and with Neon
… by the international fusion community towards nuclear fusion power plants. Still, some issues remain: tungsten used in the divertor may become recrystallized and melt during the deuterium-tritium phase of operations. Helium production from DT fusion reactions will influence W surface roughness, …
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High-resolution spatial profiling of structural and thermal properties of anode materials
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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New precursors and chemistry for the growth of transition metal films by atomic layer deposition
… Rutherford backscattering spectrometry (RBS) and nuclear reaction analysis (NRA) were performed and subsequently revealed Ni:N ratios between 2-4 for films deposited within the ALD window. AFM measurements revealed a RMS roughness value of 10.8 nm on an as-deposited film at 225°C. All …
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Multilayer solar selective coatings for high temperature solar applications: from concept to design
… by Rutherford Backscattering Spectroscopy (RBS), Nuclear Reaction Analysis (NRA) and Elastic Recoil Detection (ERD) ion beam techniques; the crystal structure was studied with X-ray diffraction and Raman spectrometry was used to determine the chemical bonding of the carbon atoms; and finally, SEM …