Journal Article

DESY-2014-01696

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Scintillating screens for micro-imaging based on the Ce-Tb doped LuAP single crystal films

Douissard, P.-A. (Corresponding author) ; Martin, T. ; Riva, F. ; Mathieu, E. ; Zorenko, Y.Extern* ; Savchyn, V. ; Zorenko, T.Extern* ; Fedorov, A.

2014
IEEE New York, NY

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Please use a persistent id in citations: doi:10.1109/TNS.2013.2282181

Abstract: Single Crystal Film (SCF) scintillators are key-components of today's high-resolution 2D X-ray detectors used at synchrotrons for applications such as X-ray Radiography, Computed Tomography (CT), laminography, full-field XANES, and topography. Due to its high density and effective atomic number, LuAlO3 (LuAP) perovskite has a great potential to replace or complement the currently used Eu-doped Gd3Ga5O12 (GGG:Eu) and Tb-doped Lu2SiO5 (LSO:Tb) SCFs. In this article we present the growth of LuAP single crystalline films on undoped YAlO3 (YAP) by the vertical dipping isothermal Liquid Phase Epitaxy (LPE) growth method. For the comparison of the light output of Ce and Tb doped LuAP SCF screens both cathodoluminescence (CL) and X-ray excited luminescence (RL) measurements were used. For investigations of Ce-Tb energy transfer in the afore mentioned oxide hosts, in addition to using traditional spectroscopic methods, we made time-resolved luminescent spectroscopy of Ce-Tb doped LuAP SCFs under excitation by pulsed synchrotron radiation at the Superlumi station (HASYLAB at DESY). Recently we have demonstrated the strong quenching influence of Pb2+ flux related impurity on the Ce3+ emission in the Ce-doped LuAP SCF screens. However our present investigation shows that Tb-doped LuAP SCFs are efficient X-ray scintillators, whose light output can be significantly increased by co-doping with Ce3+ ions. Namely, we demonstrate the efficient Ce→ Tb energy transfer in LuAP:Tb,Ce SCFs. Finally, as-grown LuAP:Tb and LuAP:Tb,Ce films were evaluated for high-resolution X-ray imaging using a spatial resolution target at the European Synchrotron Radiation Facility (ESRF), and displayed promising results

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. DORIS Beamline B2 (POF2-54G13) (POF2-54G13)
2. DORIS Beamline I (POF2-54G13) (POF2-54G13)
3. FS-Proposal: I-20110938 EC (I-20110938-EC) (I-20110938-EC)

Experiment(s):

1. DORIS Beamline B2 (DORIS III)
2. DORIS Beamline I (DORIS III)

Appears in the scientific report 2014

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Database coverage:
; ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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