Scintillation properties of Pr-doped Lu2Si2O7 single crystal

Kantuptim, Prom; Akatsuka, Masaki; Nakauchi, Daisuke; Kato, Takumi; Kawaguchi, Noriaki; Yanagida, Takayuki

doi:10.1016/j.radmeas.2020.106320

Cited by 14 publications

(10 citation statements)

References 37 publications

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“…The first couple of intense peaks at 250-30 nm come from the Pr 3+ 5d-4f transition. This emission also appeared in the Pr-doped LP and LuAG spectra [24,35]. When comparing the Pr-doped LaPS to the undoped one, th scintillation band between 350-400 nm appeared on both samples.…”

Section: Scintillation Propertiesmentioning

confidence: 74%

“…One of the famous materials in this group is the Ce-doped lutetium pyrosilicate (Lu 2 Si 2 O 7 , LPS) with a high scintillation light yield of 26,300 ph/MeV and a fast decay time of 38 ns [23]. Following the study on Ce-doped LPS, we have investigated Pr-doped LPS, gadolinium pyrosilicate (Gd 2 Si 2 O 7 , GPS), and yttrium pyrosilicate (Y 2 Si 2 O 7 , YPS) and successfully observed 5d-4f transitions of Pr 3+ [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

et al. 2022

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Five samples of lanthanum pyrosilicate (La2Si2O7) single crystals with 0.5–10.0% Praseodymium (Pr)-doping concentrations were synthesized by the floating-zone method. Photoluminescence and scintillation properties of these crystals were investigated in this study for the first time. The multiple emissions from electron transitions of Pr3+ were observed on both a photoluminescence emission map and scintillation spectra, including the desired emission band of Pr3+ 5d–4f transition at 250–310 nm. The major photoluminescence and scintillation decay times were approximately 19 and 26 ns, respectively. When compared with commercial scintillators such as Tl-doped cesium iodide (CsI), the Pr-doped La2Si2O7 samples presented a respectively low afterglow level of 32 ppm after 20 ms of X-ray irradiation. Under 662 keV γ-ray irradiation from 137Cs, the 3.0% Pr-doped La2Si2O7 sample presented a scintillation light yield of 3200 ph/MeV, which was the best value among the tested samples.

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Section: Scintillation Propertiesmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

et al. 2022

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“…In recent work, Lu-based pyrosilicate, Lu 2 Si 2 O 7 (LPS) was selected for a host material because it has a high effective atomic number (Z eff ) and good comprehensive features, such as a fast decay time of 40 ns and a high light yield of 26300 ph MeV −1 when doped with Ce, 24) and an even faster decay time of 20 ns and a decent light yield of 9700 ph MeV −1 when doped with Pr. 25) Furthermore, our previous reports on LPS indicate high potential for host materials such as scintillation in the NIR range when doped with Nd, 26) and good scintillation features when doped with Tm. 27) From a similar crystal structure of host materials, the La substitution for Lu in the pyrosilicate material as La 2 Si 2 O 7 (LaPS) is expected to deliver high scintillation properties when doped with Ce or Pr.…”

Section: Introductionmentioning

confidence: 96%

Ce concentration dependence of optical and scintillation properties on Ce-doped La₂Si₂O₇ crystal

Kantuptim

Kato

Nakauchi

et al. 2022

Jpn. J. Appl. Phys.

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A lanthanum pyrosilicate (La2Si2O7, LaPS) single crystal is successfully grown with a Ce-doped concentration of 0.5 to 20.0% as well as undoped LaPS for reference. The photoluminescence emission map of Ce-doped LaPS has broad emission at 360–410 nm from Ce3+ 5d-4f transition, with a decay time of 20–24 ns. In the scintillation properties, Ce-doped LaPS presents the scintillation peak at 390 nm under X-ray excitation, with the decay time constant at 26–31 ns plus another decay constant caused by the emission from host material at 250–600 ns. The afterglow level at 20 ms after X-ray irradiation is around 30–56 ppm. In the 662 keV γ-ray pulse height spectra, 1.0% Ce-doped LaPS shows a clear photoabsorption peak, with a scintillation light yield of 5400 ph MeV−1. The relationship between γ-ray energy and the photoabsorption peak channel (linearity) is also covered in this study.

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“…They were reported to show excellent scintillation properties with high efficiency, for instance, Ce-doped Y 2 Si 2 O 7 (YPS) and Pr-doped Lu 2 Si 2 O 7 (LPS) respectively showed LYs of 17200 and 9700 photons MeV −1 . 28,29) Furthermore, the LYs of Ce-doped YPS were improved to 21200 photons MeV −1 by admixing Gd, 30) and it surpassed that of Gd-free YPS. Here, Y-admixed LPS single crystals doped with Pr were synthesized to improve LYs of LPS with fast scintillation decays.…”

Section: Introductionmentioning

confidence: 99%

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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Scintillation properties of Pr-doped Lu2Si2O7 single crystal

Cited by 14 publications

References 37 publications

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

Ce concentration dependence of optical and scintillation properties on Ce-doped La₂Si₂O₇ crystal

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

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Scintillation properties of Pr-doped Lu2Si2O7 single crystal

Cited by 14 publications

References 37 publications

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

Ce concentration dependence of optical and scintillation properties on Ce-doped La2Si2O7 crystal

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

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Product

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Ce concentration dependence of optical and scintillation properties on Ce-doped La₂Si₂O₇ crystal

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