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

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

doi:10.35848/1347-4065/ac18a9

Cited by 7 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lanthanum pyrosilicate (La 2 Si 2 O 7 , LaPS) is one of the pyrosilicate group materials. In a recent study, when doped with Ce, the LaPS showed interesting scintillation characteristics such as a medium scintillation light yield of 5400 ph/MeV with low afterglow of 30 ppm and fast scintillation decay time of 26 ns [27]. The combination of the newly discovered LaPS host with the fast Pr 3+ is expected to deliver interesting scintillation properties in both fast decay time and high scintillation light yield.…”

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

et al. 2022

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of Pr-Doped Lanthanum Pyrosilicate Single Crystals

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…A special pulse area setup has recently been developed for scintillators with ms decay time, using which a light yield of 23000 ph/MeV for Tb-doped Sr 2 Gd 8 (SiO 4 ) 6 O 2 was reported. (33) This study is the combination of the newly discovered pyrosilicate, LaPS single crystals (34,35) with Tb as a luminescence center. This is the first report on the Tb concentration dependence of both the photoluminescence (PL) and scintillation properties of Tb-doped LaPS single crystals.…”

Section: Introductionmentioning

confidence: 99%

Optical and Scintillation Characteristics of Tb-doped La2Si2O7 Single Crystal

Kantuptim¹,

Kato²,

Nakauchi³

et al. 2023

Sensors and Materials

View full text Add to dashboard Cite

Lanthanum pyrosilicate La 2 Si 2 O 7 (LaPS) single crystals were successfully fabricated by the floating zone (FZ) method with Tb doping concentrations of 0.1, 0.5, 1.0, and 2.0% for scintillation and photoluminescence (PL) study. X-ray diffraction patterns of the samples indicate a single phase of LaPS from their consistency with the reference pattern. Tb-doped LaPS has multiple emissions from Tb 3+ 4f-4f transitions including those at 380, 420, 440, 480, 540, 590, and 620 nm, as observed in both PL and X-ray-induced scintillation spectra with a PL quantum yield of up to 50.1%. The PL and scintillation decay time constants obtained were 2.64-3.26 and 1.54-2.00 ms, respectively. In 137 Cs (662 keV) γ-ray pulse area spectra, the 1.0% Tb-doped LaPS had the highest scintillation light yield of 47700 ph/MeV. From all the results in this study, the optimum Tb doping concentration in LaPS single crystals is considered to be 1.0% for scintillator application.

show abstract