Point defects in neutron-irradiated quartz
Journal Article
·
· J. Appl. Phys.; (United States)
Point defects formed by irradiation with fast neutrons have been characterized in high-quality synthetic quartz using electron spin resonance and optical absorption techniques. Among the paramagnetic defects generated are the E/sup prime//sub 1/ center, the (AlO/sub 4/)/sup 0/ center, and two previously unreported S = 1 centers. Production and thermal annealing characteristics of these more prominent defects are described. The two S = 1 defects have g/sub c/ values of 2.0205 and 2.0158 and thermally decay near 250 and 470 /sup 0/C, respectively. They each consist of a pair of unpaired spins (i.e., holes) separated by approximately 5 A, and either vacancies or interstitials are a part of their models. These latter two centers, along with the E/sup //sub 1/ centers, result from direct displacements during the neutron irradiation. An optical absorption band at 210 nm grows at the same rate during irradiation as the E/sup prime//sub 1/ centers and S = 1 centers but cannot be definitely assigned to particular defects.
- Research Organization:
- Physics Department, Oklahoma State University, Stillwater, Oklahoma 74078
- OSTI ID:
- 6703475
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 56:4; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360605* -- Materials-- Radiation Effects
ANNEALING
BARYONS
CHALCOGENIDES
COLOR CENTERS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
E CENTERS
ELECTRON SPIN RESONANCE
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEAT TREATMENTS
HIGH TEMPERATURE
INTERSTITIALS
MAGNETIC RESONANCE
MINERALS
NEUTRONS
NUCLEONS
OPACITY
OPTICAL PROPERTIES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
QUARTZ
RADIATION EFFECTS
RESONANCE
SILICON COMPOUNDS
SILICON OXIDES
VACANCIES
360602 -- Other Materials-- Structure & Phase Studies
360605* -- Materials-- Radiation Effects
ANNEALING
BARYONS
CHALCOGENIDES
COLOR CENTERS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
E CENTERS
ELECTRON SPIN RESONANCE
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEAT TREATMENTS
HIGH TEMPERATURE
INTERSTITIALS
MAGNETIC RESONANCE
MINERALS
NEUTRONS
NUCLEONS
OPACITY
OPTICAL PROPERTIES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
QUARTZ
RADIATION EFFECTS
RESONANCE
SILICON COMPOUNDS
SILICON OXIDES
VACANCIES