CASO4-DY PHOSPHOR AS A SUITABLE MATERIAL FOR EPR HIGH-DOSE ASSESSMENT

Authors
ONORI S BORTOLIN E LAVALLE M FUOCHI PG
Citation
S. Onori et al., CASO4-DY PHOSPHOR AS A SUITABLE MATERIAL FOR EPR HIGH-DOSE ASSESSMENT, Radiation physics and chemistry (1993), 52(1-6), 1998, pp. 549-553
Citations number
6
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Radiation physics and chemistry (1993) → ACNP
ISSN journal
0969806X
Volume
52
Issue
1-6
Year of publication
1998
Pages
549 - 553
Database
ISI
SICI code
0969-806X(1998)52:1-6<549:CPAASM>2.0.ZU;2-8
Abstract
Irradiated CaSO4:Dy, a well known thermoluminescent material widely em ployed for personal and environmental dosimetry, was studied by electr on paramagnetic resonance spectroscopy in the 10(3)-10(7) Gy dose rang e. A reliable dose assessment can be performed in that range by measur ing the concentration of the radiation induced paramagnetic centers (S O3)(-) and (VCa)(2-). (VCa)(2-) center was very stable over time while (SO3)(-) center showed a dose dependent fading. Dose dependent sensit ization effects in the yield of both centers were also observed up to about 10(6) Gy.