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Luminescence and vacuum ultraviolet excitation spectroscopy of cerium doped Gd3Ga3Al2O12 single crystalline scintillators under synchrotron radiation excitations

Kozlova, Anna P. ; Kasimova, Valentina M. ; Buzanov, Oleg A. ; Chernenko, Kirill LU ; Klementiev, Konstantin LU and Pankratov, Vladimir (2020) In Results in Physics 16.
Abstract

Cerium doped Gd3Ga3Al2O12 (GGAG) single crystals as well as GGAG:Ce single crystals co-doped by divalent (Mg2+, Ca2+), trivalent (Sc3+) or tetravalent (Zr4+, Ti4+) ions have been studied by means of the excitation luminescence spectroscopy in vacuum ultraviolet spectral range. Synchrotron radiation from the undulator beam was utilized for the luminescence excitation in the energy range from 4.5 to 800 eV. The influence of the co-dopant ions on the excitonic transitions as well as on the intrinsic defects in GGAG was revealed examining the luminescence emission and excitation spectra of both Gd3+ and Ce3+ ions in all... (More)

Cerium doped Gd3Ga3Al2O12 (GGAG) single crystals as well as GGAG:Ce single crystals co-doped by divalent (Mg2+, Ca2+), trivalent (Sc3+) or tetravalent (Zr4+, Ti4+) ions have been studied by means of the excitation luminescence spectroscopy in vacuum ultraviolet spectral range. Synchrotron radiation from the undulator beam was utilized for the luminescence excitation in the energy range from 4.5 to 800 eV. The influence of the co-dopant ions on the excitonic transitions as well as on the intrinsic defects in GGAG was revealed examining the luminescence emission and excitation spectra of both Gd3+ and Ce3+ ions in all single crystals studied. Special attention was paid to the analysis of Ce3+ excitation spectra in VUV spectral range (4.5–45 eV) where multiplication of electronic excitation (MEE) processes occur. It was obtained that GGAG:Ce single crystals having different co-dopant ions reveal distinguished efficiency of MEE. The role of intrinsic defects in MEE processes in the co-doped GGAG:Ce single crystals was elucidated.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ce, GdGaAlO, Luminescence, Synchrotron radiation, VUV spectroscopy, XANES
in
Results in Physics
volume
16
article number
103002
publisher
Elsevier
external identifiers
  • scopus:85079908450
ISSN
2211-3797
DOI
10.1016/j.rinp.2020.103002
language
English
LU publication?
yes
id
7664d14d-c281-49e6-90ff-317f4579019b
date added to LUP
2020-03-09 14:45:26
date last changed
2022-04-18 20:57:58
@article{7664d14d-c281-49e6-90ff-317f4579019b,
  abstract     = {{<p>Cerium doped Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub> (GGAG) single crystals as well as GGAG:Ce single crystals co-doped by divalent (Mg<sup>2+</sup>, Ca<sup>2+</sup>), trivalent (Sc<sup>3+</sup>) or tetravalent (Zr<sup>4+</sup>, Ti<sup>4+</sup>) ions have been studied by means of the excitation luminescence spectroscopy in vacuum ultraviolet spectral range. Synchrotron radiation from the undulator beam was utilized for the luminescence excitation in the energy range from 4.5 to 800 eV. The influence of the co-dopant ions on the excitonic transitions as well as on the intrinsic defects in GGAG was revealed examining the luminescence emission and excitation spectra of both Gd<sup>3+</sup> and Ce<sup>3+</sup> ions in all single crystals studied. Special attention was paid to the analysis of Ce<sup>3+</sup> excitation spectra in VUV spectral range (4.5–45 eV) where multiplication of electronic excitation (MEE) processes occur. It was obtained that GGAG:Ce single crystals having different co-dopant ions reveal distinguished efficiency of MEE. The role of intrinsic defects in MEE processes in the co-doped GGAG:Ce single crystals was elucidated.</p>}},
  author       = {{Kozlova, Anna P. and Kasimova, Valentina M. and Buzanov, Oleg A. and Chernenko, Kirill and Klementiev, Konstantin and Pankratov, Vladimir}},
  issn         = {{2211-3797}},
  keywords     = {{Ce; GdGaAlO; Luminescence; Synchrotron radiation; VUV spectroscopy; XANES}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Results in Physics}},
  title        = {{Luminescence and vacuum ultraviolet excitation spectroscopy of cerium doped Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub> single crystalline scintillators under synchrotron radiation excitations}},
  url          = {{http://dx.doi.org/10.1016/j.rinp.2020.103002}},
  doi          = {{10.1016/j.rinp.2020.103002}},
  volume       = {{16}},
  year         = {{2020}},
}