Phosphor materials under high-density XUV FEL excitation: mechanisms of luminescence quenching

Sebastian Vielhauer; Vladimir Babin; Marco De Grazia; Eduard Feldbach; Marco Kirm; Vitali Nagirnyi; Andrej N. Vasil'ev

doi:10.1117/12.822292

18 May 2009 Phosphor materials under high-density XUV FEL excitation: mechanisms of luminescence quenching

Sebastian Vielhauer, Vladimir Babin, Marco De Grazia, Eduard Feldbach, Marco Kirm, Vitali Nagirnyi, Andrej N. Vasil'ev

Proceedings Volume 7361, Damage to VUV, EUV, and X-Ray Optics II; 73610R (2009) https://doi.org/10.1117/12.822292
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

Photoluminescence of scintillator materials based on intrinsic excitonic luminescence (PbWO₄), and on extrinsic luminescence from doped trivalent rare earth ions (RE³⁺), such as Y₃Al₅O₁₂:Ce ³⁺ and Lu₃Al₅O₁₂:Pr³⁺ was studied under excitation with free electron laser (FEL) light in the 50-100 eV energy range. In case of PbWO₄, non-exponential behavior in the initial part of decay curves was observed depending on the FEL pulse energy, and modeled in terms of the bimolecular self-quenching process. For the RE³⁺ doped samples, a reduction in light yield with increasing pulse energy is observed, which can be traced to saturation of the available RE³⁺ sites in the crystal due to the initial high concentration of electron-hole pairs after FEL excitation.

Citation Download Citation

Sebastian Vielhauer, Vladimir Babin, Marco De Grazia, Eduard Feldbach, Marco Kirm, Vitali Nagirnyi, and Andrej N. Vasil'ev "Phosphor materials under high-density XUV FEL excitation: mechanisms of luminescence quenching", Proc. SPIE 7361, Damage to VUV, EUV, and X-Ray Optics II, 73610R (18 May 2009); https://doi.org/10.1117/12.822292

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