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Artigo Revisado por pares
BIBTEX RIS

Pr 3+ -doped complex oxide single crystal scintillators

2009; Institute of Physics; Volume: 42; Issue: 5 Linguagem: Inglês

10.1088/0022-3727/42/5/055117

ISSN

1361-6463

Autores

Jan Pejchal, M. Nikl, E. Mihóková, J. Mareš, Akira Yoshikawa, Hiraku Ogino, K M Schillemat, А. Krasnikov, A. Vedda, Karel Nejezchleb, V. Múčka,

Tópico(s)

Atomic and Subatomic Physics Research

Resumo

We investigate and compare optical absorption, luminescence and scintillation properties of Pr-doped Y3Al5O12, Lu3Al5O12, Y2SiO5 and Lu2SiO5 single crystals. The processes determining the kinetics of the fast Pr3+ 5d–4f radiative transition are described. Among the studied host materials, only Lu3Al5O12 presents neither any 5d1–4f luminescence state nonradiative quenching nor Pr3+ ionization at room temperature. We evaluate the figure of merit of all materials for application as scintillators. The most promising system appears to be Lu3Al5O12 : Pr, since it combines an elevated density of 6.67 g cm−3, a fast scintillation response dominated by a 21 ns decay time and a spectrally corrected light yield about 160% with respect to that of Bi4Ge3O12 (BGO).

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