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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 22 for “"Irradiation effects"”.
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Neutron irradiation effects in gallium arsenide
… electrical properties of n-GaAs as a result of irradiations with fast neutrons have been studied, after epitaxial layers doped with Si at concentrations in the range 1.35 $\times$ 10$\sp{15}$ to 1.60 $\times$ 10$\sp{16}$ cm$\sp{-3}$ were irradiated with reactor neutron fluences up to 1.31 …
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The irradiation effects on a model TBP-decahydranaphthalene solvent extraction system
Digitized by Kansas Correctional Industries
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The irradiation effects on a model TBP-decahydranaphthalene solvent extraction system
Digitized by Kansas Correctional Industries
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A Study of Newtron Irradiation Effects on Gallium Arsenide Semiconductor Materials
Made available in DSpace on 2017-07-06T18:59:35Z (GMT). No. of bitstreams: 3 Yang_Siyuan_MS.pdf: 40469799 bytes, checksum: 1b8400059c7276e82d663b03f596a858 (MD5) Yang_Siyuan_MS_ABS.pdf: 573254 bytes, checksum: 6d52f1d60dcb222b600aa29c8bbb880d (MD5) license.txt: 4813 bytes, checksum: …
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Irradiation Effects in Copper, Silver, and Gold Near 10 Degrees K
Made available in DSpace on 2015-05-12T17:11:49Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0009059.PDF: 1203742 bytes, checksum: fb890851570f659516118512ce6b3d35 (MD5) Previous issue date: 1954
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Irradiation effects on mechanical and physical properties of SS304L-nanotube composites
… potentially improve material performance under irradiation and increase their design lifetime. Traditional alloy design always sacrifices one property for another, such as strength for ductility, or creep strength for radiation resistance.
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Electron Irradiation Effects in Silicon at Liquid Helium Temperatures Using Ac Hopping Conductivity
Made available in DSpace on 2015-05-12T22:38:42Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7121180.PDF: 2152141 bytes, checksum: 8192bd201315080d1852eefe71352362 (MD5) Previous issue date: 1971
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Irradiation effects on geopolymer and additively manufactured 316H stainless steel and porosity in equine hoof wall
… implanted with Ti+ ions to simulate neutron irradiation as a concrete alternative for nuclear facilities. Post-irradiation, the geopolymer showed a 90% increase in microhardness, a 46% rise in reduced modulus, and a 23% decrease in contact depth. Surface cracking was observed, attributed to …
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Study of chemistry and irradiation effects on nanofluids to be used in light water reactor accident cooling
… to CHF obtained from plain heaters, after irradiation in a Co-60 gamma source. These initial results reveal that applying nanofluid in reactor chemistry and radiation environment can potentially bring about significant benefit in increasing the safety margin. Further study is needed to …
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Comprehensive Analysis of Proton Irradiation Effects on 4H-SiC Power Devices: Characterization, Simulation, and Optimization for Enhanced Performance [Analisi completa degli effetti dell'irradiazione protonica sui dispositivi di potenza in 4H-SiC: caratterizzazione, simulazione e ottimizzazione per migliorarne le prestazioni]
Lo sviluppo dei materiali e dei dispositivi basati sui semiconduttori ha determinato significativi progressi tecnologici nel corso dell'ultimo secolo. Recentemente, la richiesta di nuove capacità di funzionamento nei dispositivi elettronici, come la flessibilità e il lavoro ad alte temperature, …
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Detector and Physics Performance of the ATLAS Inner Tracker
… up- grade. Detailed studies of module behavior, irradiation effects, external charge injection, and QA/QC methodologies are reported, focusing on the results from the Prague labora- tory. The complex laboratory monitoring system was developed together with many QC setups during the site …
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High-Resolution Characterization of Micro-Scale Crack Tip Fields in Zirconium
… outcome from this research can be used to mimic irradiation effects with proton irradiation in the future. In this dissertation, two high-resolution experimental techniques, high (angular) resolution electron backscatter diffraction (HR-EBSD) and high (spatial) resolution digital image …
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THE ATTACHMENT AND CHARACTERIZATION OF DNA PROBES ON GaAs-BASED SEMICONDUCTOR SURFACES
… on a GaAs surface. I also investigated the effects of the thiol-based spacer and electrolyte concentration to improve the brush-like structure of the DNA layer. Finally, irradiation effects and AlGaAs resonators have been studied for the applications of DNA brush layer on GaAs as biosensor …
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Floquet theory of electronic stopping processes of projectiles in solids
The Thesis proposes a new theoretical framework for the study of electronic stopping of particle projectiles in crystalline solids. It does not rely on perturbative or linear response approximations. Moreover, it goes beyond nonlinear models for the homogeneous electron gas, which assume ideal …
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Interactions of single-crystal lithium niobate surfaces with ultra-violet laser radiation
… investigations split naturally into three areas: effects on hydrophilicity by low intensity laser irradiation, effects on ferroelectric domain inversion by focussed laser irradiation, and modelling of the heating and subsequent lithium diffusion during focussed laser irradiation.<br/><br/>It was …
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Effect of Laser Induced Crystallinity Modification on Degradation and Drug Release of Biodegradable Polymer
… degradation and drug release over time. Laser irradiation is used in this study to induce surface melting and resolidification. The high cooling rate of the laser treatment coupled with the slow polymer crystallization kinetics leads to reduced surface crystallinity after the laser irradiation. …
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Modelling of Graphite Elements and Low Enriched Fuel Assemblies for a High Temperature Gas-Cooled Reactor
… over 15 years of steady state operation. The effects of creep, swelling, and thermal expansion are incorporated into the model. The results predict the maximum equivalent stress will not exceed the limit of 12 MPa from the ASME code. Large thermal stresses are induced due to the high midplane …
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Application and analysis of the constant photocurrent method in studies on amorphous silicon and other thin-film semiconductors
… and amorphous for highsilane content.Proton irradiation effects on undoped a-Si:H and pc-Si:H samples from PECVD and HWCVD deposition method were investigated by using steady-state photoconductivity and CPM experimental methods before and after 100 MeV proton irradiation. In contrast to 1 MeV …
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Radiation Shielding Design and Radioactive Waste Assessment of Horizontal Compact High Temperature Gas-Cooled Reactor
… Furthermore, this work discusses the neutron irradiation effects and their impact on the integrity of the barrel, RPV, and graphite reflector against material property changes. It was found that 2.25Cr-1Mo alloy has a higher radiation resistance due to the higher iron content in the …
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Irradiation damage in neutron-irradiated Fe-Cr model alloys
… resistance to swelling, helium embrittlement and irradiation creep at elevated temperature (T/Tm > 0.4). However, F-M steels exhibit low-temperature irradiation-induced embrittlement that leads to a substantial decrease in toughness at lower irradiation temperature (T < 500°C) even at very low …
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