Physics and current understanding of X-ray storage phosphors

By S. Schweizer. 2001

158 citations recorded by the source corpus.

BaFBr doped with Eu 2+ is the most successful X-ray storage phosphor used for digital radiography so far. The mechanisms of information storage and subsequent read-out are, however, not yet fully understood. The present understanding of the structures and reactions of the radiation-induced point defects involved in these processes are critically discussed. The shortcomings of X-ray storage phosphor screens based on BaFBr:Eu 2+ are the inferior spatial resolution compared to conventional X-ray films. Also reviewed are therefore alternative storage phosphors such as alkali halides doped with Eu 2+ . Ga + , In + , or Tl + or elpasolites doped with Ce 3+ or Eu + which are also promising with high figures of merit and potentially higher spatial resolution. A completely new approach is the use of suitably doped glasses and glass ceramics. First results on fluorozirconate glass ceramics with good storage and read-out properties are reviewed.

Subfields: Materials Chemistry, Radiation

View Paper: https://www.semanticscholar.org/paper/5b86de2b51ca679b93d09449d5ca6ba38a36b90e