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Showing 1 to 16 of 16 for “"Arrhenius law"”.
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Low Temperature Electron Irradiation Induced Defects in Gallium-Arsenide: Bulk and Surface Acoustic Wave Studies
… reorientation kinetics of both peaks follow the Arrhenius law.
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Metastability of Magnetic Nanoparticles in Magnetization Relaxation with Different Dynamics and Distributions of Magnetic Anisotropy
… of the metastable state follows a modified-Arrhenius law where the energy barrier has a dependency on temperature and standard deviation of the distributions in addition to magnetic field and magnetic anisotropy. The magnetic anisotropy barrier is determined by the smallest particle within a …
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A Random First Order Theory of Liquid -Glass Transition
… phenomena including violation of the usual Arrhenius law, stretched relaxations, deviations from the Stokes-Einstein relation in hydrodynamics, and aging have been observed in the laboratory. In this thesis, a microscopically motivated theory of glassy dynamics based on an underlying random …
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A Random first order theory of liquid-glass transition
… phenomena including violation of the usual Arrhenius law, stretched relaxations, deviations from the Stokes-Einstein relation in hydrodynamics, and aging have been observed in the laboratory. In this thesis, a microscopically motivated theory of glassy dynamics based on an underlying random …
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Magnetic resonance in amorphous iron-nickel alloys
… The relaxation rate can be fitted to a power-law and an Arrhenius Law temperature behaviors, however only power-law fitting gives reasonable fitting values, which indicates that the phase transition model is better able to explain the spin-glass transition phenomena.
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Electron beam irradiation of polystyrene/poly(vinyl methyl ether) blends
… of the viscosity is illustrated using the Arrhenius Law. The results obtained, in terms of flow activation energy, Ea, show that no real changes occurred due to radiation. On the other hand, it is found that the flow activation energy is strongly dependent on the blend composition. The …
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Low temperature electron irradiation induced defects in gallium arsenid: Bulk and surface acoustic wave studies
… reorientation kinetics of both peaks follow the Arrhenius law. The annealing of both peaks was studied with isochronal and isothermal anneals in the temperature range 200 -335 K. Peak I anneals with a spectrum of activation energies in the range .7 -1.1 eV between 220 and 335 K. Peak II anneals …
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Kinetic Property and SS 316/Alloy 617 Corrosion Study in Molten Chloride and Fluoride Salts
… concentration range and all of them followed the Arrhenius law. At the same temperature, the measured D_(Fe^(2+) ) and D_(〖Cr〗^(2+) ) values in molten NaF-KF-UF4-UF3 salts were slightly smaller than those obtained in molten MgCl2-NaCl-KCl salts. The non-linear curve fitting technique was applied …
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The reaction of ortho-positronium with nitroaromatics via complex formation
… range, 200-500°K. Distinct departure from the Arrhenius law was found. In general, the rate constant increased linearly with increasing temperature up to a point, and then decreased linearly as the temperature was raised further. The following mechanism is postulated: Ps + M [stacked right and …
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Optimized Sustainable Hydrogen Generation from Liquid Metal Activated Aluminum-Water Reactions
… enhanced reaction rates 44-fold, aligning with Arrhenius Law. Isochoric reactions at high pressure were tested to simulate deep-sea vehicle environments using onboard hydrogen reactors fueled by aluminum and surrounding seawater. Results showed a 33% yield increase at 6 MPa (586 m depth) …
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An empirical potential for hydrogen bond energies determination of the orientation of anthracene molecules in the unit cell by means of a refractivity method: some ab initio calculations involving acetonitrile exchange reaction
… distribution of precursor concentrations and the Arrhenius law show that Walden inversion predominates over Jay's addition-elimination-rearrangement mechanism even when MNDO energy levels were used. Estimated orders of magnitude for the rate ratios were determined.
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Scale-bridging molecular dynamics simulations of plasma-surface interactions
… a temperature dependence that follows the Arrhenius law. The pyrolysis process initiates with the removal of -OH functional groups and -H atoms from aromatic C rings within the bulk phenolic resin to release H2O, followed by breaking of these C rings to release C-based fragments. Through …
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Water in the Earth’s Interior: Thermodynamics and kinetics of hydrogen incorporation in olivine and wadsleyite
… the slower diffusing species with the diffusion laws: [100], [010] = 10-(5.6±3.2) exp [-(175 ± 76)/RT] [001] = 10-(1.4±0.5) exp [-(258 ± 31)/RT] (2) Hydrogen diffusion in forsterite The kinetics of hydration linked to magnesium-vacancy diffusion within dry synthetic forsterite single crystals was …
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Mechanical behavior and environmental stability of GLAD-based Cu nanospring films
… 50°C, (b) formation of thermal oxide obeying an Arrhenius type process for Cu+ migration at temperatures higher than 70°C, which was accelerated by grain boundary diffusion resulting in activation energies of 0.17-0.23 eV, and (c) complete oxidation following the Kirkendall effect at temperatures …
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Mechanisms governing the growth, reactivity and stability of iron sulfides
… fully magnetized state. An extrapolation of the Arrhenius law from the paramagnetic regime would therefore overestimate actual diffusivities by up to 10² times at 150 °C. Second, the surface exchange of sulfur from H₂S into the solid state in Fe₁-xS is measured using electrical conductivity …
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The Effects of Temperatures on System Performance and Bacterial Community Structure in a Biological Phosphorus Removal System
… decrease with temperature in accordance with Arrhenius' Law, resulting in an apparent contradiction in the literature. The objective of this study was to investigate the EBPR temperature controversy. The experimental systems used were two, lab-scale UCT configuration plants fed with acetate as …