Scintillation Properties of SrHfO$_{3}$:Ce$^{3+}$ and BaHfO$_{3}$:Ce $^{3+}$ Ceramics

Loef, E.V.D. van; Higgins, William E.; Głodo, J.; Brecher, C.; Łempicki, A.; Venkataramani, Venkat; Moses, W.W.; Derenzo, Stephen E.; Shah, K.S.

doi:10.1109/tns.2007.896343

Cited by 66 publications

(43 citation statements)

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“…4f transition of the Ce 3+ ion. The PL and scintillation room temperature (RT) decay times previously reported were 36 and 42 ns, respectively [2,3]. More recent studies [6] performed in powder samples prepared by two different preparation techniques found PL decay time values of about 15 ns.…”

Section: Introductionmentioning

confidence: 93%

“…Ce 3+ -doped SrHfO 3 (SHO) has attracted recent interest as a scintillating material due to its high density (7.56 g/cm 3 ) and high effective atomic number. Because of its high melting point (T m > 2400°C) the material is not available as a single crystal and therefore is currently being investigated in the form of nanocrystals [1,2] or ceramics obtained from crystalline powders prepared by solid-state synthesis [3].…”

Section: Introductionmentioning

confidence: 99%

“…Because of its high melting point (T m > 2400°C) the material is not available as a single crystal and therefore is currently being investigated in the form of nanocrystals [1,2] or ceramics obtained from crystalline powders prepared by solid-state synthesis [3]. Alternative techniques for the preparation of Ce-doped SHO powders are the sol-gel route [4,5] or acetate-citrate combustion [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Trapping states and excited state ionization of the Ce3+ activator in the SrHfO3 host

Mihóková¹,

Jarý²,

Fasoli³

et al. 2013

Chemical Physics Letters

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a b s t r a c tWe study trapping states of Ce 3+ -doped SrHfO 3 by thermally stimulated luminescence in a wide temperature range (10-730 K). We determine characteristic parameters of the traps by the initial rise technique. We also determine the energy of thermal ionization of the excited state of Ce 3+ in SrHfO 3 host by purely optical method based on the study of UV illumination-induced thermoluminescence. The method provides a value of the thermal ionization energy of about 0.25 eV.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Trapping states and excited state ionization of the Ce3+ activator in the SrHfO3 host

Mihóková¹,

Jarý²,

Fasoli³

et al. 2013

Chemical Physics Letters

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“…Lanthanide Aluminum Garnets doped with Cerium were identified as the most promising, and we have focused our development efforts on this family. Strontium and Barium Hafnate scintillator ceramics with moderate light yields have been reported [13]. Lutetium Aluminum Garnet (LuAG:Ce), Gadolinium Aluminum Garnet (GAG:Ce) and Terbium Aluminum Garnet (TAG:Ce) feature high density, high effective atomic number (e.g.…”

Section: Introductionmentioning

confidence: 99%

Scintillators With Potential to Supersede Lanthanum Bromide

Cherepy

Payne

Asztalos

et al. 2009

IEEE Trans. Nucl. Sci.

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241

118

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is the most promising. SrI 2 (Eu) emits into the Eu 2+ band, centered at 435 nm, with a decay time of 1.2 µs and a light yield of up to 115,000 photons/MeV. It offers energy resolution better than 3% FWHM at 662 keV, and exhibits excellent light yield proportionality. Transparent ceramics fabrication allows production of Gadolinium-and Terbium-based garnets which are not growable by melt techniques due to phase instabilities. While scintillation light yields of Cerium-doped ceramic garnets are high, light yield non-proportionality and slow decay components appear to limit their prospects for high energy resolution.We are developing an understanding of the mechanisms underlying energy dependent scintillation light yield non-proportionality and how it affects energy resolution. We have also identified aspects of optical design that can be optimized to enhance energy resolution.

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“…Ce-doped SrHfO 3 (SHO) is known phosphor material which is attractive due to high density (7.56 g/cm 3 ), low intrinsic radioactivity and fast response based on the Ce 3+ 5d-4f emission [1]. It has been studied in recent years by several groups [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

SrHfO3-based phosphors and scintillators

et al. 2011

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a b s t r a c tThe heavily Ce-doped SrHfO 3 (SHO) and the undoped non-stoichiometric SHO sample sets were prepared by solid state reaction in powder form and their luminescence spectra and decay kinetics were measured. Concentration quenching effects and thermally induced ionization of the Ce 3+ excited states were followed and discussed in the former sample set. In the latter one new emission band at about 334 nm was found in Sr-deficient samples and temperature dependences of its emission intensity and decay times were studied in the detail. Room temperature decay time of about 180 ns and efficient and fast energy transfer from the host to the center of the 334 nm emission make this material promising candidate for X-ray phosphors.

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Scintillation Properties of SrHfO$_{3}$:Ce$^{3+}$ and BaHfO$_{3}$:Ce $^{3+}$ Ceramics

Cited by 66 publications

References 2 publications

Trapping states and excited state ionization of the Ce3+ activator in the SrHfO3 host

Trapping states and excited state ionization of the Ce3+ activator in the SrHfO3 host

Scintillators With Potential to Supersede Lanthanum Bromide

SrHfO3-based phosphors and scintillators

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