Spectroscopic studies of the f↔d ultraviolet transitions of Pr3+ in alkaline earth fluorides

Pédrini, C.; Bouttet, D.; Dujardin, Christophe; Moine, B.; Bill, Hans

doi:10.1016/0009-2614(94)00185-5

Cited by 19 publications

(5 citation statements)

References 13 publications

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“…The latest sample of the second generation exhibits an exponential fluorescence decay with a time constant around 20 ns (Fig. 2b, curve 1) [7]. The 340 nm emission exhibits a variation of decay time with wavelength which confirms evidence for the existence of several physically different perturbed Ce3+ sites.…”

Section: Photoluminescencesupporting

confidence: 59%

Fluorescence Processes and Scintillation of CeF₃Crystal Excited by UV and X-Ray Synchrotron Radiation

Pédrini¹,

Belsky²,

Moine³

et al. 1993

Acta Phys. Pol. A

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Photoluminescence properties of CeF3 have been investigated. Two kinds of emitting centers have been identified: regular Ce 3+ sites exhibiting two close emission bands (285 and 300 nm) and a fast fluorescence (20 ns) and several physically different perturbed Ce3 + sites giving rise to a broad emission band near 340 nm and a longer fluorescence (30-40 ns) the decay time of which varies with wavelength. An energy transfer occurs between these two kinds of centers. Scintillation properties have been studied under UV and X-ray excitation. The additional fast decay always observed at short time under ionizing radiation is interpreted by a temperature dependent luminescence quenching phenomenon due to high excitation density.

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Section: Photoluminescencesupporting

confidence: 59%

Fluorescence Processes and Scintillation of CeF₃Crystal Excited by UV and X-Ray Synchrotron Radiation

Pédrini¹,

Belsky²,

Moine³

et al. 1993

Acta Phys. Pol. A

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“…Using experimentally measured excitation spectra in this energy region (using synchrotron radiation), detailed scintillation mechanisms e.g. for CeF 3 were proposed ( [24] and references therein). One very interesting issue coming out from these simulations and measurements was that a kind of ªenergy dropletsº (i.e., several closely spaced elementary excitations in nm-scaled space region) is formed.…”

Section: General Background and Theorymentioning

confidence: 99%

Wide Band Gap Scintillation Materials: Progress in the Technology and Material Understanding

Nikl

2000

phys. stat. sol. (a)

366

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Luminescence and scintillation characteristics of four selected material systems, namely CsI : Tl(Na), CeF 3 , PbWO 4 and Ce-doped aluminium perovskites XAlO 3 : Ce (XY, Lu, Y±Lu) are reviewed. The progress in their physical understanding and related optimisation of their characteristics and technology are demonstrated. The important role of various defect states in the scintillator performance of these materials is stressed, which has led to the need for a deeper study of the processes of energy transfer and storage to achieve their intrinsic limits and full exploitation in scintillation detectors.

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“…They were 27-40 ns and typical values as 5d-4f transitions of Pr 3+ . [43][44][45] When compared with decay times of Pr-doped LPS and YPS, the obtained values were slightly slow. The tendency would be reasonable because decay times were proportional to QY, 46) whose values were higher than those of the LPS and YPS.…”

Section: Resultsmentioning

confidence: 97%

Photoluminescence and scintillation properties of Pr-doped (Lu, Y)₂Si₂O₇ crystals

Okazaki

Nakauchi

Kantuptim

et al. 2023

Jpn. J. Appl. Phys.

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Pr-doped (Lu1-x , Y x )2Si2O7 (x = 0.25, 0.5, and 0.75) crystals were synthesized by the Floating Zone method. Emission peaks due to 5d–4f transitions of Pr3+ were observed at 300 nm under excitation of both ultraviolet light and X-rays. Scintillation decay times of 19–22 ns were obtained, and they originated from the 5d–4f transitions of Pr3+. Afterglow levels became high from 64.7 to 541 ppm as the Y-admixed concentration increased. The light yields were estimated to be 560–700 photons/MeV by comparing the channels of photoabsorption peaks from the pulse height spectra of 137Cs γ-rays measured using the prepared crystals and commercial Gd2SiO5 reference.

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Spectroscopic studies of the f↔d ultraviolet transitions of Pr3+ in alkaline earth fluorides

Cited by 19 publications

References 13 publications

Fluorescence Processes and Scintillation of CeF₃Crystal Excited by UV and X-Ray Synchrotron Radiation

Fluorescence Processes and Scintillation of CeF₃Crystal Excited by UV and X-Ray Synchrotron Radiation

Wide Band Gap Scintillation Materials: Progress in the Technology and Material Understanding

Photoluminescence and scintillation properties of Pr-doped (Lu, Y)₂Si₂O₇ crystals

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Spectroscopic studies of the f↔d ultraviolet transitions of Pr3+ in alkaline earth fluorides

Cited by 19 publications

References 13 publications

Fluorescence Processes and Scintillation of CeF3Crystal Excited by UV and X-Ray Synchrotron Radiation

Fluorescence Processes and Scintillation of CeF3Crystal Excited by UV and X-Ray Synchrotron Radiation

Wide Band Gap Scintillation Materials: Progress in the Technology and Material Understanding

Photoluminescence and scintillation properties of Pr-doped (Lu, Y)2Si2O7 crystals

Contact Info

Product

Resources

About

Fluorescence Processes and Scintillation of CeF₃Crystal Excited by UV and X-Ray Synchrotron Radiation

Fluorescence Processes and Scintillation of CeF₃Crystal Excited by UV and X-Ray Synchrotron Radiation

Photoluminescence and scintillation properties of Pr-doped (Lu, Y)₂Si₂O₇ crystals