Optical and Scintillation Properties of Nd-doped Strontium Yttrate Single Crystals

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A (C 6 H 5 C 2 H 4 NH 3 ) 2 PbI 4 crystal was prepared to investigate its photoluminescence (PL) and scintillation properties. Two PL emission peaks at 525 and 560 nm derived from the recombination of excitons were observed. The obtained PL decay curve was approximated from the sum of three exponential decay functions related to the excitonic luminescence. Under X-ray irradiation, the excitonic emission at 560 nm from shallow trap centers was observed, and the X-ray induced scintillation decay times were 0.8, 6.0, and 37 ns. The full energy peak was observed under 241 Am α-ray (5.5 MeV) irradiation, and the light yield was estimated to be ~2900 ph/5.5 MeV-α.

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of an Organic–Inorganic Lead Iodide Perovskite Single Crystal Having Quantum Well Structures

Okazaki¹,

Onoda²,

Nakauchi³

et al. 2022

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“…With this ability, the scintillation detector has been implemented for various professional purposes, including astrophysics, (1) medicine, (2) natural resource exploration, (3) homeland security, (4) and many more fields. For several decades until now, solid-state scintillators in various forms of materials, including plastics, (5) glasses, (6)(7)(8)(9)(10) single crystals, (11)(12)(13)(14)(15)(16) transparent ceramics, (17)(18)(19)(20) and composite materials, have been developed. (21,22) Among all the possible materials, single crystals are one of the promising choices because the single-crystal scintillator has many advantages, including high chemical stability, transparency, and high scintillation light yield.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Optical and Scintillation Properties of Tm-doped La2Si2O7 and Lu2Si2O7 Single Crystals

Kantuptim¹,

Nakauchi²,

Kato³

et al. 2022

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Lanthanum and lutetium pyrosilicate (La 2 Si 2 O 7 and Lu 2 Si 2 O 7 , respectively) single crystals with a Tm doping concentration of 2.0% were successfully synthesized by the floating-zone method. X-ray diffraction patterns showed a single phase in each compound without the impurity phase. Both their photoluminescence (PL) and scintillation properties were systematically determined in this study, including PL emission, PL decay time, X-ray-induced scintillation spectra, X-ray-induced scintillation decay time, afterglow level, and pulse height spectra. The emission from Tm 3+ 4f-4f transition was observed on both samples as shown by PL emission as well as X-ray-induced scintillation spectra. Under 137 Cs 662 keV γ-ray irradiation, their scintillation light yields were 2340 ph/MeV for Tm-doped Lu 2 Si 2 O 7 and 1440 ph/MeV for Tm-doped La 2 Si 2 O 7 .

“…Glass scintillators have recently attracted research attention because of their industrial merits such as low cost, excellent moldability, flexible glass composition, and the possibility of large-volume production. (4)(5)(6)(7)(8)(9)(10) The scintillation properties of many glasses doped with a rare-earth (RE) ion, such as Dy 3+ -activated B 2 O 3 -Al 2 O 3 -SrO glasses and Eu 3+ -activated K 2 O-Bi 2 O 3 -Ga 2 O 3 glasses, have been evaluated. (11,12) Tellurite glasses are also potential glass scintillators.…”

Section: Introductionmentioning

confidence: 99%

Radiation Response Characteristics of Pr3+-activated SrO–Al2O3–TeO2 Glasses

Nakamori¹,

Kawano²,

Takaku³

et al. 2022

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We fabricated Pr 3+ -activated glasses having a composition of 10SrO-5Al 2 O 3 -85TeO 2 (PSAT) for potential use as radiation detectors, and their photoluminescence (PL) and X-ray-induced scintillation properties were then characterized. The PSAT glasses showed several emission peaks in their PL spectra owing to the 4f-4f transitions of Pr 3+ . Furthermore, they exhibited typical PL decay times (0.09-0.86 ms), where the decay originated from the 4f-4f transitions of Pr 3+ . In the scintillation spectra of the PSAT glasses, three peaks at approximately 480, 618, and 636 nm were observed. The scintillation decay times were 0.747-0.840 ms, corresponding to the 4f-4f transitions of Pr 3+ . Furthermore, the PSAT glasses showed afterglow levels of 352-521 ppm, and the lowest afterglow level (352 ppm) was comparable to that of Tl-activated CsI single crystal.