Abstract
Spatial correlation between the activator ion and electron and hole traps generated by x irradiation is thought to play a decisive role in the photostimulated emission process of the storage phosphor BaFBr:. We report the first direct experimental evidence for correlations among F centers, hole centers, and obtained by measuring cross relaxation effects in optically detected paramagnetic resonance. BaFBr treated with the known procedures for removing oxygen still retains 50 ppm or more . This ion is critically involved in the formation of F and hole centers.
- Received 8 July 1991
DOI:https://doi.org/10.1103/PhysRevLett.67.3571
©1991 American Physical Society