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ID: 29150.0, MPI für Kernphysik / Archaeometry
Photostimulated luminescence in BaX2 : Eu2+ (X=Br, Cl) X-ray storage phosphors
Authors:Secu, M.; Kalchgruber, R.; Schweizer, S.; Spaeth, J. M.; Edgar, A.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Radiation Effects and Defects in Solids
Journal Abbrev.:Radiat. Eff. Defects Solids
Volume:157
Issue / Number:6-12
Start Page:957
End Page:962
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The photostimulated luminescence (PSL) effect in BaX2 :Eu (2+) (X=Br, Cl) is comparable to that observed in BaFBr:Eu2+ which is used in commercial X-ray storage phosphor screens. After X- irradiation the PSL stimulation spectra of BaX2 :Eu (2+) (X=Br, Cl) single crystals are identical to the F centre absorption spectra, i.e. the F centres are the PSL-active electron trap centres. The nature of the hole centres is still unknown. The PSL response time of about 0.70 mus is within experimental error of 0.02 mus identical to the Eu2+ radiative lifetime, whereas in BaCl2 :Eu2+ the PSL response time is 0.60 mus, and thus longer than the Eu2+ radiative lifetime of 0.47 mus.
Free Keywords:X-ray storage phosphor; barium dihalides; photostimulated luminescence
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Guest Groups and Emeriti/Forschungsstelle Archäometrie (G. A. Wagner)
External Affiliations:Univ Gesamthsch Paderborn, Dept Phys, D-33095 Paderborn, Germany; Univ Gesamthsch Paderborn, Dept Phys, D-33095 Paderborn, Germany; Univ Victoria, Sch Chem & Phys Sci, Wellington, New Zealand
Identifiers:ISI:000180483700066 [ID No:1]
ISSN:1042-0150 [ID No:2]
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