2016
DOI: 10.1016/j.optmat.2016.06.040
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Abstract: Highlights: Free electrons are generated by short pulse in subpicoseconds in PWO and YAGG:Ce  The relaxation of holes from Gd to valence band in GAGG:Ce takes 5-10 ps  Hole trapping at Gd deteriorates response speed in mixed garnet scintillators Keywords: Scintillators, free carrier absorption, lead tungstate, cerium-doped garnets. AbstractNonequilibrium carrier dynamics in the scintillators prospective for fast timing in high energy physics and medical imaging applications was studied. The time-resolved fr… Show more

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Cited by 15 publications
(7 citation statements)
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“…The position of the lowest terms corresponding to the excited states of f 7 Gd 3+ was estimated using absorption spectra (see, e.g., Ref. ). The corresponding positions of narrow P, I, and D states without accounting for their splitting by spin‐orbit interaction are indicated in the diagram.…”
Section: Discussionmentioning
confidence: 65%
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“…The position of the lowest terms corresponding to the excited states of f 7 Gd 3+ was estimated using absorption spectra (see, e.g., Ref. ). The corresponding positions of narrow P, I, and D states without accounting for their splitting by spin‐orbit interaction are indicated in the diagram.…”
Section: Discussionmentioning
confidence: 65%
“…The concentration of Ce 3+ ions at the doping level of 0.5 at.% is substantially lower than the concentration of crystal‐building Gd ions, therefore, the density of free electrons at this excitation is considerably smaller than that of free holes, in contrast to the excitation at 3.6 eV generating no free holes. As pointed out in our previous paper, the PL kinetics is consistent with the assumption that the ground 8 S level of Gd 3+ is in the valence band. The current results on the differential absorption (see Figure ) enables us to define the position of the Gd 3+ ground state in the valence band.…”
Section: Discussionmentioning
confidence: 99%
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“…Molybdates and tungstates find a wide range of practical applications due to their ability to adopt different crystallographic structures, whose physical properties can be further modified by a chemical composition [1,2]. In particular, these materials are used as scintillators, down-conversion phosphors, white light-emitting diodes, laser host materials, catalysts, sensors and pigments [3][4][5][6][7][8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%