New type of scintillation detectors for biological, medical, and radiation monitoring applications

Globus, M.E.; Grinyov, B.; Ratner, M. A.; Тарасов, В. А.; Lyubinskiy, V.; Vydai, Yu. T.; Ananenko, A. A.; Zorenko, Yu.; Gorbenko, V.; Konstankevych, I.

doi:10.1109/tns.2004.830113

Cited by 21 publications

(31 citation statements)

References 6 publications

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“…The Ce-doped YAG and LuAG-based scintillators can be prepared both in the form of bulk single crystals (SC) by the Czochralski or Bridgman methods [1][2][3][4] as well as in the form of single crystalline films (SCF) by the Liquid Phase Epitaxy (LPE) method with the typical thickness of 2-60 m [5][6][7]. Apart the traditional scintillation applications for environmental radiation monitoring [7] they can be employed also for imaging screens with high spatial resolution [8][9][10] with some advantages with respect to typical powder phosphorbased screens [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Bi3+–Ce3+ energy transfer and luminescent properties of LuAG:Bi,Ce and YAG:Bi,Ce single crystalline films

Zorenko

Gorbenko

Voznyak

et al. 2013

Journal of Luminescence

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The absorption, cathodoluminescence, excitation spectra of photoluminescence (PL) and PL decay kinetics were studied at 300 K for the double Bi3+-Ce3+ doped and separately Bi3+ and Ce3+ doped Y3Al5O12 (YAG) and Lu3Al5O12 (LuAG) single crystalline film phosphors grown by liquid phase epitaxy method. The emission bands in UV range arising from the intrinsic radiative transition of Bi3+-based centers, and emission bands in visible range, related to luminescence of excitons localized around Bi-based centers, were identified both Bi-Ce and Bi-doped YAG and LuAG SCF. The processes of energy transfer from the host lattice to Bi3+ and Ce3+ ions and from Bi3+ to Ce3+ ions were investigated. Competition between Bi3+ and Ce3+ ions in the processes of energy transfer from the YAG and LuAG hosts was evidenced. The strong decrease of the intensity of Ce3+ luminescence both in YAG:Ce and LuAG:Ce SCF phosphors, grown from Bi2O3 flux, is observed due to the quenching influence of Bi3+ flux related impurity. Due to overlap of the visible emission band of Bi3+ centers with the absorption band of Ce3+ ions peaking around 450-460 nm, an effective non-radiative energy transfer from Bi3+ ions to Ce3+ ions takes place, resulting in the appearance of slower component in the Ce3+ luminescence decay kinetics.Dear Editors, Please considered for publication our new paper With best wishes, Yuriy Zorenko, corresponding author

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Section: Introductionmentioning

confidence: 99%

Bi3+–Ce3+ energy transfer and luminescent properties of LuAG:Bi,Ce and YAG:Bi,Ce single crystalline films

Zorenko

Gorbenko

Voznyak

et al. 2013

Journal of Luminescence

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“…The fields of application of such SCF are now extended to -and -scintillators, screens for visualization of X-ray images, cathodoluminescent screens as light sources for scanning optical microscopes, laser media and luminescent converters of LED radiation [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In several previous works [2,4,10,11] we have demonstrated the creation by LPE method of the SCF scintillators based on Y 3 Al 5 O 12 :Ce (YAG:Ce) and Lu 3 Al 5 O 12 (LuAG:Ce) garnets emitting in visible (450-750 nm) range with a decay time of 70 and 50 ns respectively. We have also shown [12][13][14][15][16] that these SCF scintillators in comparison with bulk single crystal (SC) analogues are characterized by faster Ce 3+ emission decay under high energy excitation, substantially less (by 4.5-8 times) content of slow emission components and higher energy resolution due to the absence in them of Y Al and Lu Al antisite defects (ADs) and low concentration of vacancies as luminescence and trapping centers.…”

Section: Introductionmentioning

confidence: 99%

“…1.Shift of the emission spectra of SCF scintillators into the UV range with respect to recently developed SCFs of LuAG:Ce anf YAG:Ce garnets, emitting in visible range, in principle can result in the faster emission decay, larger light yield (LY) and higher energy resolution [4,15]. Specifically, we plan to extend the class of novel SCF scintillators which effectively emit in UV ranges, on Ce-doped perovskites (YAP:Ce and LuAP:Ce) and Pr 3+ -doped garnets (LuAG:Pr and YAG:Pr).…”

Section: Introductionmentioning

confidence: 99%

“…For visualization of X-ray images in the UV light we also tested at ESRF 3 the novel SCF scintillators based on LuAG garnet and LuAP perovskites compounds which have significantly higher density (ρ=6.67 and 8.34 g/cm 3 ) and effective atomic number (Z eff =59 and 62 ) [6,7,10,11] as compared to commonly used YAG (ρ=4.6 g/cm 3 , Z eff =29) [4,5]. As mentioned above, for creation of the intense UV light, the Pr 3+ as well as La3+ and Sc 3+ ions can be used as activators in LuAG SCF and Ce 3+ ions in LuAP SCF respectively.…”

Section: Introductionmentioning

confidence: 99%

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Development of novel UV emitting single crystalline film scintillators

Zorenko¹,

Gorbenko²,

Savchyn³

et al. 2011

J. Phys.: Conf. Ser.

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Abstract. The work is dedicated to development of new types of UV -emitting scintillators based on single crystalline films (SCF) of aluminimum perovskites and garnets grown by the liquid phase epitaxy (LPE) method. The development of the following three types of UV SCF scintillators is considered in this work: i) Ce-doped SCF of Y-Lu-Al-perovskites with Ce 3+ emission in the 360-370 nm range with a decay time of 16-17 ns; ii) Pr-doped SCF of Y-Lu-Al garnets with Pr 3+ emission in the 300-400 nm range with a decay time of 13-17 ns; iii) La 3+ and Sc 3+ doped SCF of Y-Lu-Al-garnets, emitting in the 290-400 nm range due to formation of the La Y,Lu , Sc Y,Lu and Sc Al centers with decay time of 250-575 ns. The results of testing the several novel UV-emitting SCFs scintillators for visualization of X-ray images at ESFR are presented. It is shown that the UV emission of the LuAG:Sc, LuAG:La and LuAG:Pr SCFs is efficient enough for conversion of Xray to the UV light and that these scintillators can be used for improvement of the resolution of imaging detectors in synchrotron radiation applications.

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Luminescent and scintillation properties of CsI:Tl films grown by the liquid phase epitaxy method

Zorenko¹,

Voznyak²,

Turchak³

et al. 2010

Physica Status Solidi (a)

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CsI:Tl films have been crystallized by the liquid phase epitaxy (LPE) method from CsI:Tl (0.3 mol.%) crystalline salt onto CsI substrates. The luminescent and scintillation properties of CsI:Tl films are systematically compared with the corresponding properties of CsI:Tl (0.3 and 0.03%) crystals grown from the melt. The luminescence of CsI:Tl films and CsI:Tl (0.03%) crystals in the bands peaked at 2.52 and 2.22 eV is related to the radiative relaxation from the weak-off and strong-off configurations of excitons localized around Tl þ ions, respectively.Apart from single Tl þ centers, in highly doped CsI:Tl (0.3%) crystals creation of Tl þ dimer centers occurs. These centers form the additional emission bands peaked at 2.42 and 1.98 eV related to the weak-off and strong-off configurations of excitons localized around Tl þ dimer centers. We found that the dominant mechanism of excitation of the strong-off luminescence of localized excitons in CsI:Tl films and crystals is the chargetransfer transition between I -anions and Tl þ ions in single and dimer centers.

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New type of scintillation detectors for biological, medical, and radiation monitoring applications

Cited by 21 publications

References 6 publications

Bi3+–Ce3+ energy transfer and luminescent properties of LuAG:Bi,Ce and YAG:Bi,Ce single crystalline films

Bi3+–Ce3+ energy transfer and luminescent properties of LuAG:Bi,Ce and YAG:Bi,Ce single crystalline films

Development of novel UV emitting single crystalline film scintillators

Luminescent and scintillation properties of CsI:Tl films grown by the liquid phase epitaxy method

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