Search results for "Hyperfine interactions"

showing 2 items of 2 documents

Polyamorphic transformation induced by electron irradiation ina-SiO2glass

2009

We report a study by electron paramagnetic resonance of amorphous silicon dioxide $(a{\text{-SiO}}_{2})$ irradiated by 2.5 MeV electrons in the dose range from $1.2\ifmmode\times\else\texttimes\fi{}{10}^{3}$ to $5\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{kGy}$. By measuring the change in the splitting of the primary $^{29}\text{S}\text{i}$ hyperfine doublet of the ${E}_{\ensuremath{\gamma}}^{\ensuremath{'}}$ centers we evidenced an irradiation induced local (around the defects) densification of $a{\text{-SiO}}_{2}$. Our data show that the local degree of densification of the materials is significantly higher than that obtained by mean density measurements, suggesting that the …

Materials scienceDegree (graph theory)Hydrostatic pressureElectronCondensed Matter PhysicsCrystallographic defectElectronic Optical and Magnetic Materialslaw.inventionParamagnetismdensification electron beam effects glass hyperfine interactions paramagnetic resonance polymorphic transformationsNuclear magnetic resonancelawElectron beam processingAtomic physicsElectron paramagnetic resonanceHyperfine structurePhysical Review B
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Faddeev study of heavy baryon spectroscopy

2007

16 pages, 3 figures.-- PACS nrs.: 12.39.Jh, 12.39.Pn, 14.20.-c.-- ISI Article Identifier: 000246249100015.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0703257

QuarkNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeNuclear TheoryConstituent quarkFOS: Physical sciencesPosition and momentum spaceBottom quarkHyperfine interactionsHigh Energy Physics - Phenomenology (hep-ph)ChromodynamicsSymmetry breakingCharm (quantum number)Nuclear ExperimentPhysicsCharmed baryonsNonrelativistic quark modelsHigh Energy Physics::PhenomenologyFísicaQuantum numberFlip-flop modelBaryonHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentNucleon-nucleon interactionBaryon spectra
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