Journal ArticleDOI
Computer simulations of magnetic resonance spectra observed in polycrystalline and glassy samples
P.C Taylor,Philip J. Bray +1 more
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In this paper, the authors developed a general computer program which simulates the NMR or ESR spectra observed in powdered and glassy samples to facilitate calculation of the relevant Hamiltonian or spin-Hamiltonian parameters in a variety of cases.About:
This article is published in Journal of Magnetic Resonance.The article was published on 1970-05-01. It has received 99 citations till now.read more
Citations
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11B NMR studies and structural modeling of Na2O-B2O3-SiO2 glasses of high soda content
TL;DR: In this paper, the relative fractions of boron atoms in Na2O-B2O3SiO2 glasses of high soda content were determined using NMR techniques.
Journal ArticleDOI
Oxygen-associated trapped-hole centers in high-purity fused silicas
TL;DR: In this paper, two distinct oxygen-associated trapped-hole centers (OHCs) are identified in samples of room-temperature γ-irradiated, high-purity fused silica.
Journal ArticleDOI
Nuclear magnetic resonance studies of the glasses in the system Na2OB2O3SiO2
Y.H. Yun,Philip J. Bray +1 more
TL;DR: In this article, the structure of glasses in the system Na2OB2O3SiO2 was analyzed using the 11B NMR spectra.
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Fundamental defect centers in glass: Electron spin resonance and optical absorption studies of irradiated phosphorus‐doped silica glass and optical fibers
TL;DR: In this article, the phosphorusoxygen-hole center (POHC) was shown to occur in two variants comprising holes trapped on one or two nonbridging oxygens, and a singlet resonance S due to E′ type defects was observed to grow in with annealing above ∼800 K, regardless of whether or not the sample was irradiated.
References
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Journal ArticleDOI
Nuclear Magnetic Resonance Powder Patterns in the Presence of Completely Asymmetric Quadrupole and Chemical Shift Effects: Application to Metavanadates
TL;DR: In this paper, a procedure was developed for the determination of the locations of shoulders and singularities of polycrystalline nuclear magnetic resonance (NMR) powder patterns in the presence of both nuclear quadrupole and anisotropic magnetic shift interactions.
Journal ArticleDOI
Paramagnetic Resonance of Mn2+ in Glasses and Compounds of the Lithium Borate System
David L. Griscom,R. E. Griscom +1 more
TL;DR: In this paper, the paramagnetic resonance spectra of Mn2+ ions in glasses and compounds of the lithium borate system have been investigated at 9.1 and 35 GHz, and it is concluded that many of the sites in the glasses are probably distorted versions of the site occupied in the Li2O·4B2O3 compound.
Journal ArticleDOI
Electron Spin Resonance of Manganese in Borate Glasses
H. W. de Wijn,R. F. van Balderen +1 more
TL;DR: In this article, the ESR spectra of Mn2+ ions have been observed in borate glasses of the composition (MnO)x(B2O3+0.04 K2O)1−x with x from 0.001 up to 0.030.
Journal ArticleDOI
ESR Studies of Lithium Borate Glasses and Compounds γ Irradiated at 77°K: Evidence for a New Interpretation of the Trapped‐Hole Centers Associated with Boron
TL;DR: In this paper, a spin Hamiltonian having orthorhombic symmetry is proposed to account for the over-all spectrum and is substantiated by successful computer simulations of the experimental line shapes, under the assumption that the ensembles of centers induced in the glasses are characterized by substantial spreads or distributions.
Journal ArticleDOI
Nuclear Magnetic Resonance Line Shapes Resulting from the Combined Effects of Nuclear Quadrupole and Anisotropic Shift Interactions
TL;DR: In this article, the effects on the nuclear magnetic resonance line shape of a polycrystalline sample resulting from combined axially symmetric electric quadrupole and anisotropic shift interactions have been calculated through the second order.
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Nuclear Magnetic Resonance Absorption in Glass. I. Nuclear Quadrupole Effects in Boron Oxide, Soda‐Boric Oxide, and Borosilicate Glasses
A. H. Silver,P. J. Bray +1 more