6533b7d9fe1ef96bd126cb81
RESEARCH PRODUCT
Intrinsic defects induced by β-irradiation in silica
Simonpietro AgnelloFranco Mario GelardiMarco CannasB. BoizotGuillaume PetiteRoberto Boscainosubject
High concentrationNuclear and High Energy PhysicsMaterials sciencePhysics::Medical Physicsβ irradiationResonancePhotochemistryCrystallographic defectlaw.inventionNuclear magnetic resonancelawGlassy matrixIrradiationElectron paramagnetic resonanceInstrumentationdescription
We report an electron paramagnetic resonance study of defects induced by β-irradiation in natural and synthetic samples of high purity commercial silica. Data are collected for the E′ centers and a resonance satellite signal split by 1.36 mT. By comparison with the effects of γ-irradiation it is shown that the mechanisms of defect generation are the same for the two irradiation sources and that in the high-dose limit they involve intrinsic defects of the glassy matrix. Moreover, the high concentration of defects generated by β-irradiation modifies the EPR spectrum due to spin–spin interaction.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-05-01 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |