title: Light yield sensitization by X-ray irradiation of the BaAl4O7:Eu(2+)ceramic scintillator obtained by full crystallization of glass.
abstract: We report the scintillation properties of BaAl4O7:Eu(2+), a transparent polycrystalline ceramic prepared by full and congruent crystallization of glass. We show that a small deviation from the stoichiometric composition as well as thermal treatment duration play a crucial role in the formation of charge carrier traps, leading to a strong influence on the scintillation yield. We demonstrate that when the traps are not entirely removed, X-ray irradiation allows them to be permanently filled in order to significantly enhance the scintillation output. Finally, the best sample obtained demonstrates performances able to compete with a commercially available scintillating material, CsI:Tl.
authors.affiliation: Institut Lumière Matiére, UMR5306, Université Claude Bernard Lyon1-CNRS, bâtiment Kastler, 10 rue Ada Byron 69622 Villeurbanne Cedex, France. christophe.dujardin@univ-lyon1.fr.
authors.forename: Gaël
authors.initials: G
authors.lastname: Patton
authors.forename: Federico
authors.initials: F
authors.lastname: Moretti
authors.forename: Andrei
authors.initials: A
authors.lastname: Belsky
authors.forename: Kholoud
authors.initials: K
authors.lastname: Al Saghir
authors.forename: Sébastien
authors.initials: S
authors.lastname: Chenu
authors.forename: Guy
authors.initials: G
authors.lastname: Matzen
authors.forename: Mathieu
authors.initials: M
authors.lastname: Allix
authors.forename: Christophe
authors.initials: C
authors.lastname: Dujardin