Processes affecting the spin-lattice relaxation time,
Spin-lattice and spin-spin relaxation
... (with spin I > 1 / 2 ). This usually leads to short relaxation times and often featureless broad lines are ...The spin-lattice relaxation time determiness what recycle delay ...
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Probing the Nuclear Spin-Lattice Relaxation Time at the Nanoscale
... nuclear spin-lattice relaxation time T 1 can be detected by measuring the spin polarization in a volume of about 3000 × 3000 × 30 nm 3 ; see ...
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Spin-Lattice Relaxation Times
... and spin-lattice relaxation An easy way to visualize the process is shown in Figure 2, which illustrates an older method for measuring T 1 's called "saturation ...short time the ...
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Nuclear spin lattice relaxation times in metals
... -28- It is possible using a pulse apparatus, a phase coherent receiver and a box-car integrator to obtain traces of the n,m.r. absorption signal^^ and hence the second moment^^. The method requires that the box-car gate ...
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Spin-lattice relaxation time for a 3d5 ion in Td symmetry in the Raman region
... Résumé. 2014 On a calculé, pour un ion 3d5 en symétrie Td, le temps de relaxation spin-réseau dû au processus Raman, en tenant compte du terme linéaire en rotation V1R et du terme quadratique en vibration ...
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Influence of Concentration Fluctuations on Relaxation Processes in Spin Glasses
... Generalized spin glass relaxation model based on Weron 73 In the Weron model [5] the fractal character of the spin glass is described by the exponent β, whereas k is a measure for the contribution of ...
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Systematic Differences between Lean and Obese Adolescents in Brain Spin Lattice Relaxation Time: A Quantitative Study
... greater CSF volume (P ⬍ .012), suggesting parenchymal atro- phy; and longer T1 relaxation times (P ⬍ .005) in several re- gions, including the parietal lobes and the OFC. Compared with lean adolescents, obese ...
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The Influence of Organo Clay Ratio in the HIPS OMMT Nanocomposites Analyzed by Proton Spin Lattice and Spin Spin Relaxation Times
... Abstract Spin-lattice and spin-spin relaxation times are one of the most attractive tools in the solid-state nuc- lear magnetic resonance spectroscopy to evaluate the level of clay ...
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Imaging of Nuclear Magnetic Resonance spin-lattice relaxation activation energy in cartilage
... resonance spin–lattice relaxation time, T 1 , as a function of depth within the cartilage ...1 relaxation time is well described by Arrhenius-type behaviour and the activation ...
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Density Dependence of Electron Spin Relaxation Time in GaA
... whose lattice lacks inver- sion symmetry gives rise to a macroscopic electric field, which is assumed to be proportional to the derivative of the atomic displacement, u = ∑ q 2 ρ m V 0 ω q ( b q + b − + q ) e i ...
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Examine of Dielectric Relaxation Times by Microwave Absorption and Correlation with NMR Spin Lattice Relaxation Times for Mixtures of Alcohols
... obtain relaxation time τ (see ...the spin population and rotates the equilibrium magnetization on to z- ...some time τ , the sample is subjected to a 90 o pulse which rotates the residual ...
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Spin Spin Relaxation Time to Evaluate Degradation of HIPS/Organoclaynano Composites by Aging
... this relaxation parameter to show how it can give good information about degradation ...proton spin-spin relaxation time was measured to evaluate the changing in the intermolecular ...
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Analysis of Dielectric Relaxation Times by Microwave Absorption Technique and Correlation with NMR Spin Lattice Relaxation Times for Mixtures of Organic Solutes
... then relaxation time τ (see ...the spin population and rotates the equilibrium magnetization on to z- ...some time τ, the sample is subjected to a 90 o pulse which rotates the residual ...
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NMR spin-lattice relaxation and ionic conductivity in lithium thioborogermanate fast-ion-conducting glasse
... This study will show for the first time that the non- Arrhenius conductivity behavior is indeed a general phenom- enon for both silver and lithium FIC glasses. However, it will also show that while some of the ...
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Salt enhanced solvent relaxation and particle surface area determination via rapid spin-lattice NMR
... Suspension settling rates under centrifugation were also used to elucidate changes in particle aggregation for TiO 2 a and calcite, with the addition of KCl electrolyte. Here, Fig. 6, represents changes in dispersion ...
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Lipid bilayer dynamics from simultaneous analysis of orientation and frequency dependence of deuterium spin-lattice and quadrupolar order relaxation
... nuclear spin relaxation in lipids has been assumed for both oriented bilayers and vesicles, except for the presence of orientational averaging and a possible contribution from vesicle tumbling in the latter ...
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A Mössbauer study of spin relaxation of ⁵⁷Fe ions
... ±5/2 doublet has the longest spin-lattice relaxation time of the three levels[5]. the spectrum at 295 K may be identified as primarily due to this level. Cooling to 77 K produces a second ...
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Competition of lattice and spin excitations in the temperature dependence of spin wave properties
... and relaxation time of magnons as a function of temperature, and conversely the change in phonon frequencies and lifetimes with the magnetic ...to spin transport conversion has expanded dramatically ...
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Multiple relaxation time lattice Boltzmann simulation for flow, mass transfer, and adsorption in porous media
... appearance time of the breakthrough point is reduced at lower LDF mass transfer coefficient; while, the time until the saturation point is reached is significantly ...completion time of the ...
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PROTON SPIN-LATTICE RELAXATION IN ACETONE-WATER MIXTURES SURENDRA NATH SHARMA. M. Sc., Agra University, INDIA, 1954.
... the relaxation mechanisms in mixture of such liquids which do not react ...the spin lattice relaxation time Tj in water, acetone, acetone-D^O mixture, and various percentages of ...
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