Radiation effects in fluoride glasses
Radiation-induced defects in Zr-based fluoride glasses have been characterized using optical absorption and electron spin resonance (ESR) techniques. The optical absorption bands due to interstitial fluorine atoms, the F/sup -//sub 2/, FCl/sup -/, Cl/sup -//sub 2/ centers, and Zr/sup 3 +/ centers have been identified by correlating optical absorption and ESR measurements. Polarized bleaching experiments indicate that the hole-type centers, and the Zr/sup 3 +/ centers have anisotropic defect configurations. X-ray excitation at 14 K generates a broad, asymmetric emission band at 337 nm (3.68 eV), which is assigned to a localized-excited state similar to that for self-trapped excitons in halide crystals. The intensity of the x-ray induced emission provides further evidence that radiolysis defect production occurs in this material. The optical tail of the radiation-induced Zr/sup 3 +/ absorption affects infrared transmission. Evidence is presented that the CCl/sub 4/ reactive-atmosphere process introduces a significant amount of Cl/sup -/ (approx.5%) in the glass.
- Research Organization:
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078
- OSTI ID:
- 5087845
- Journal Information:
- J. Appl. Phys.; (United States), Vol. 58:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GLASS
PHYSICAL RADIATION EFFECTS
ABSORPTION SPECTRA
BLEACHING
CRYSTAL DEFECTS
ELECTRON COLLISIONS
ELECTRON SPIN RESONANCE
EXCITONS
FLUORINE COMPOUNDS
HOLES
INFRARED SPECTRA
INTERSTITIALS
LIGHT TRANSMISSION
OPACITY
PHOTOLUMINESCENCE
TRAPPING
ULTRAVIOLET RADIATION
X RADIATION
ZIRCONIUM IONS
CHARGED PARTICLES
COLLISIONS
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
HALOGEN COMPOUNDS
IONIZING RADIATIONS
IONS
LUMINESCENCE
MAGNETIC RESONANCE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POINT DEFECTS
QUASI PARTICLES
RADIATION EFFECTS
RADIATIONS
RESONANCE
SPECTRA
360605* - Materials- Radiation Effects