Basic study of Europium doped LiCaAlF6 scintillator and its capability for thermal neutron imaging application

Yanagida, Takayuki; Kawaguchi, Noriaki; Fujimoto, Yutaka; Fukuda, Kentaro; Yokota, Yuui; Yamazaki, Atsushi; Watanabe, K.; Pejchal, Jan; Uritani, Akira; Iguchi, Tetsuo; Yoshikawa, Akira

doi:10.1016/j.optmat.2011.02.016

Cited by 127 publications

(109 citation statements)

References 14 publications

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“…Despite the low signalto-noise ratio, adequate decay curves were observed for GS20 and LiCaAlF 6 :Eu. The reported decay constants are 75 ns and 1.6 ms, respectively, (15,17) and our measurements reproduced those results. In the case of LiF:W, a clear decay curve under thermal-neutron irradiation was not obtained owing to the low luminescence intensity; therefore, the decay profile was characterized by X-ray irradiation.…”

Section: Methodssupporting

confidence: 90%

“…These luminescence features are consistent with previous reports. (15,17) All the samples showed emission in the spectral range detectable by typical PMTs. The PL quantum yields of LiF:W, LiCaAlF 6 :Eu, and GS20 were approximately 26% (λ ex = 250 nm), 100% (λ ex = 320 nm), and 80% (λ ex = 340 nm), respectively.…”

Section: Methodsmentioning

confidence: 97%

“…The GS20 glass scintillator is nonhygroscopic and shows an acceptable light yield (~6000 photons/neutron). In recent years, we have developed LiCaAlF 6 :Eu, (16)(17)(18)(19)(20) which shows nonhygroscopicity and higher light yield (typically ~20000 photons/neutron) than that of GS20. We describe the characteristics of a LiF:W (LiF doped with WO 3 ) single crystal as a thermal-neutron scintillator.…”

Section: Introductionmentioning

confidence: 99%

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Luminescence and Scintillation Properties of LiF:W Single Crystal for Thermal-Neutron Detection

2017

Sensors and Materials

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The luminescence and scintillation properties of LiF:W were investigated in comparison with those of LiCaAlF 6 :Eu and GS20 (Ce-doped lithium silicate glass). LiF:W showed photoluminescence and scintillation emission peaking at the wavelength of 440 nm with the decay time of approximately 43 μs, which was shorter than those of LiCaAlF 6 :Eu and GS20. The light yield of LiF:W estimated by pulse height spectroscopy was approximately 90 photons/neutron.

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Section: Methodssupporting

confidence: 90%

Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Luminescence and Scintillation Properties of LiF:W Single Crystal for Thermal-Neutron Detection

2017

Sensors and Materials

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“…Both resistive [28] and inductive [27] heating methods are applied to produce the melts used for the growths.…”

Section: Ce-doped and Eu-doped Licaalfmentioning

confidence: 99%

“…In the LiCaAlF 6 structure, the Ca 2+ host cation is sub- For the growth of the 2 mol.% Eu-doped LiCaAlF 6 crystals, the system equipped with inductive heating and automatic diameter control was applied [27]. EuF 3 was used as a source of Eu-dopant.…”

Section: Ce-doped and Eu-doped Licaalfmentioning

confidence: 99%

Czochralski Growth and Properties of Scintillating Crystals

2013

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The Czochralski method is one of the very few melt growth techniques that are industry friendly when considering the combination of quality, dimensions, and cost of the produced crystals suitable for their commercialization in scintillation detectors. This method is one of the oldest and most developed crystal growth processes regarding an adequate understanding the physical phenomena observed during solidication process and its practical expansion especially in the industrial scale production. It allows controllable formation of single-crystalline cylindrical ingots of various inorganic scintillation materials. The review summarizes recent progress on the Czochralski growth of a number of scintillation materials. The oxide crystals are mainly considered including the Ce and Pr--doped RE3Al5O12, RE = Y, Lu, aluminum garnets and newly discovered ultraecient Ce-doped Gd3(Ga,Al)5O12 multicomponent garnet, high density PbWO4 and CdWO4 tungstates, Ce-doped RE2SiO5, RE = Y, Gd, Lu, oxyorthosilicates and (Y,Lu)AlO3 aluminum perovskites and nally the classical Bi4Ge3O12 scintillator. Additionally, the details of the growth of other practically important non-oxide crystals, namely the Ce and Eu-doped LiCaAlF6 neutron and ultraecient Ce-doped LaBr3 scintillators, are discussed. The potential of novel micro-pulling down growth method is briey described in the combinatorial search for new scintillator materials. Selected luminescence and scintillation characteristics including the spectra and decay kinetics, light yield and radiation resistance are also illustrated and overviewed.

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Ionizing Radiation Induced Luminescence

Yanagida

2022

Phosphors for Radiation Detectors

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Basic study of Europium doped LiCaAlF6 scintillator and its capability for thermal neutron imaging application

Cited by 127 publications

References 14 publications

Luminescence and Scintillation Properties of LiF:W Single Crystal for Thermal-Neutron Detection

Luminescence and Scintillation Properties of LiF:W Single Crystal for Thermal-Neutron Detection

Czochralski Growth and Properties of Scintillating Crystals

Ionizing Radiation Induced Luminescence

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