Saturation of a Ce:Y.sub.3./sub.Al.sub.5./sub.O.sub.12./sub. scintillator response to ultra-short pulses of extreme ultraviolet soft X-ray and X-ray laser radiation

0502418 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Krzywinski, J. - Andrejczuk, A. - Bionta, R.M. - Burian, Tomáš - Chalupský, Jaromír - Jurek, M. - Kirm, M. - Nagirnyi, V. - Sobierajski, R. - Tiedtke, K. - Vielhauer, S. - Juha, Libor
Saturation of a Ce:Y₃Al₅O₁₂ scintillator response to ultra-short pulses of extreme ultraviolet soft X-ray and X-ray laser radiation.
Optical Materials Express. Roč. 7, č. 3 (2017), s. 665-675. ISSN 2159-3930
Grant CEP: GA MŠMT(CZ) LH14072; GA MŠMT LG15013; GA ČR(CZ) GA14-29772S
Institucionální podpora: RVO:68378271
Klíčová slova: fluorescent and luminescent materials * luminescence * free-electron lasers (FELs) * UV * EUV * X-ray lasers * laser beam characterization * radiometr
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.566, rok: 2017

Investigations of radioluminescence saturation in monocrystalline cerium doped yttrium aluminum garnet (Ce:YAG) exposed to intense extreme ultraviolet (XUV), soft X-ray and X-ray radiation delivered from three free-electron lasers are described in this article. The measurements were performed with wavelengths of 98, 25.6, 13.5 and 0.15 nm. We have found that saturation of the photon yield occurs at an excitation level of 2.0 x 1020 eV/cm3 resulting in an emission of 1.5 x 1018 visible photons per cubic centimeter. This number is much smaller than the concentration of Ce3+ in the scintillator that was equal to 2 x 1020 cm−3. Because the internal radiance efficiency η does not depend strongly on the irradiating photon energy, i.e., η ≈0.035 ± 0.015 in the range 10 to 100 000 eV, the results presented here could be used to predict saturation effects in scintillator slabs placed in imaging systems of bright XUV, X-ray and particle beams.
Trvalý link: http://hdl.handle.net/11104/0294353