Investigation of the luminescence, crystallographic and spatial resolution properties of LSO:Tb scintillating layers used for X-ray imaging applications

Abstract In this work, a group of Lu 2 SiO 5 :Tb (LSO:Tb) scintillating layers with a Tb concentration between 8% and 19% were investigated by means of synchrotron and laboratory techniques. The scintillation efficiency measurements proved that the highest light yield is obtained for a Tb concentration equal to 15%. At higher concentration, quenching processes occur which lower the light emission. The analysis of the reciprocal space maps of the (082) (280) and (040) Bragg reflections showed that LSO:Tb epilayers are well adapted on YbSO substrates for all the investigated concentrations. The spatial resolution tests demonstrated the possibility to achieve a resolution of 1 μm with a 6 μm thick scintillating layer.

[1]  Thierry Martin,et al.  A novel epitaxially grown LSO-based thin-film scintillator for micro-imaging using hard synchrotron radiation. , 2010, Journal of synchrotron radiation.

[2]  Ullrich Pietsch,et al.  High-Resolution X-Ray Scattering , 2004 .

[3]  Max Born,et al.  Principles of optics - electromagnetic theory of propagation, interference and diffraction of light (7. ed.) , 1999 .

[4]  Heinrich Riesemeier,et al.  The micro-imaging station of the TopoTomo beamline at the ANKA synchrotron light source , 2009 .

[5]  Xianghui Xiao,et al.  A versatile indirect detector design for hard X-ray microimaging , 2012 .

[6]  K. Nugent,et al.  Quantitative Phase Imaging Using Hard X Rays. , 1996, Physical review letters.

[7]  E. Mihóková,et al.  Luminescence of lead-related centres in single crystalline films of Lu2SiO5 , 2012 .

[8]  Andreas Koch,et al.  X-ray imaging with submicrometer resolution employing transparent luminescent screens , 1998 .

[9]  Ulrich Bonse,et al.  X-ray computed microtomography (μCT) using synchrotron radiation (SR) , 1996 .

[10]  Marco Stampanoni,et al.  High resolution X-ray detector for synchrotron-based microtomography , 2002 .

[11]  P. Cloetens,et al.  Holotomography: Quantitative phase tomography with micrometer resolution using hard synchrotron radiation x rays , 1999 .

[13]  J. Berndt,et al.  Spectroscopic characterization of micro- and nanoparticle suspensions with size dynamics in plasmas , 2012 .

[14]  J. Tous,et al.  High resolution low energy X-ray microradiography using a CCD camera , 2011 .

[15]  P. Cloetens,et al.  Phase objects in synchrotron radiation hard x-ray imaging , 1996 .

[16]  A. Snigirev,et al.  On the possibilities of x-ray phase contrast microimaging by coherent high-energy synchrotron radiation , 1995 .

[17]  Andreas Koch,et al.  X-ray camera for computed microtomography of biological samples with micrometer resolution using Lu3Al5O12 and Y3Al5O12 scintillators , 1999, Medical Imaging.

[18]  Xiufeng Cheng,et al.  Structural and thermal properties of the monoclinic Lu2SiO5 single crystal: evaluation as a new laser matrix , 2009 .

[19]  A. Rack,et al.  LSO-Based Single Crystal Film Scintillator for Synchrotron-Based Hard X-Ray Micro-Imaging , 2009, IEEE Transactions on Nuclear Science.

[20]  G. Baldacchini,et al.  Radiation trapping and self-quenching analysis in Yb3+, Er3+, and Ho3+ doped Y2O3 , 2003 .

[21]  Patrik Vagovič,et al.  LPE grown LSO:Tb scintillator films for high-resolution X-ray imaging applications at synchrotron light sources , 2011 .

[22]  Jack H. Campbell,et al.  Nonradiative Energy Losses and Radiation Trapping in Neodymium‐Doped Phosphate Laser Glasses , 2004 .

[23]  T. Martin,et al.  Recent developments in X-ray imaging with micrometer spatial resolution. , 2006, Journal of synchrotron radiation.

[24]  K. Annapurna,et al.  Yb^3+ ion concentration effects on ̃1 μm emission in tellurite glass , 2012 .