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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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Ailion, David Charles; Morris, Alan H. | Asymmetric spin echo sequences. a simple new method for obtaining NMR 1H spectral images | The nuclear magnetic resonance (NMR) signal decay produced by reversible tissue-induced dephasing of the magnetization components in the transverse plane (reversible tissue-induced dephasing) was measured and expressed as a function of a new transverse relaxation time T'2 (T2 prime) for samples of ... | Asymmetric spin echo; Signal decay; Chemical shift; Tissue characterization; Lung aeration; Fatty liver | 1985 |
| 2 |
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Ailion, David Charles | Commensurability and defect-induced phason gaps in incommensurate systems | The phason energy gap has been observed to increase on going from the incommensurate to higher-order commensurate phases in the "devil's staircase" compound [N(CH3)4]2ZnCl4. The gap was determined via the phason-induced 1 4N spin-lattice relaxation contribution, which was obtained from the variati... | Phasons; Commensurate; Incommensurate; Lattices; Modulation | 1985 |
| 3 |
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Vardeny, Zeev Valentine | Effect of bias illumination on photoinduced absorption decay in ?-Si:H | Zeldov and Weiser1 proposed a model to explain the influence of optical biasing on the decay of photoinduced absorption (PA) in ?-Si:H at high temperatures observed by Pfost, Vardeny, and Tauc.2 This model differs from the model originally used2 for interpreting the experimental data at temperatures... | Optical biasing; Bias illumination; Photoinduced absorption decay; a-Si:H; Amorphous silicon | 1985 |
| 4 |
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Williams, Clayton C. | High-resolution photothermal laser probe | An advance in photothermal imaging is described. A photothermal laser probe is presented that operates at a frequency of 1 GHz. At this frequency the spacial resolution is limited only by the optical spot size of the probe beam. The photothermal sensitivity of the probe is 1.2 X 10-4 degrees Celsiu... | Laser probes | 1985 |
| 5 |
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Ailion, David Charles | NMR spectra and relaxation in incommensurate systems in the presence of a devil's staircase | The possibility of discriminating true incommensurate phases from long period commensurate phases via NMR lineshape and spin-lattice relaxation measurements is discussed. The theoretical results are compared with experimental data in Rb2ZnCl4, Rb2ZnBr4, and [N(CH3)4]2ZnCl4. Devil's staircase effects... | Incommensurate phases; Commensurate phases; Phason gap; Spin-lattice relaxation | 1985 |
| 6 |
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Symko, Orest George | Spin glass behavior of Cd1-xMnxTe below the nearest-neighbor percolation limit | Magnetization measurements down to 10 mK of Cd, _ x Mn, Te for Mn concentrations 0.01<x<0.15 show spin glass behavior. Such behavior is attributed to short-range exchange and dipolar interactions. Both interactions are used to explain the concentration dependence of the spin freezing temperatures fo... | Spin glass behavior; Cd1-xMnxTe | 1985 |
| 7 |
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Mattis, Daniel C. | Tricritical point in random-field Ising model | The numerical investigation of the random-field Ising model by Houghton, Khurana, and Seco1 has revealed a number of interesting features concerning the three-dimensional Ising model in a random external field Bt. Earlier, Aharony2 had already found that even in a mean-field approximation the b... | Random external field; Tricritical points; Gaussian distribution | 1985 |
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