Thermal Neutron Measurements Using Thermoluminescence Phosphor Cr-doped Al2O3 and Cd Neutron Converter

The optical and optically stimulated luminescence (OSL) properties of Ce-doped 20CsCl-20CaCl 2 -60ZnCl 2 (CCZ) glasses were evaluated. All the Ce-doped CCZ glasses showed a broad emission peak at 370 nm upon excitation at 320 nm, and the decay time suggested that the origin was the 5d-4f transitions of Ce 3+ . After X-ray irradiation, the Ce-doped CCZ glasses showed OSL around 370 nm under stimulation at 400 nm. All the glasses exhibited dose response functions with good linearity in the dynamic range of 0.1-10 Gy.

Section: Introductionmentioning

confidence: 99%

Optical and Optically Stimulated Luminescence Properties of Ce-doped CsCl–CaCl2–ZnCl2 Glasses

Ito¹,

Kimura²,

Shiratori³

et al. 2022

“…To investigate scintillation, TSL, and OSL properties, many materials such as single crystals, (14)(15)(16)(17)(18)(19)(20)(21)(22) ceramics, (23)(24)(25)(26)(27)(28)(29) and glasses (30)(31)(32)(33)(34) have been employed. The detection efficiency of scintillators and storage-type phosphors depends on the volume of the material; thus, transparent materials are preferable to detect emissions generated inside materials.…”

Section: Introductionmentioning

confidence: 99%

Scintillation and Thermally Stimulated Luminescence Properties of Sn-doped CaO–B2O3–SiO2 Glasses

Fukushima¹,

Shiratori²,

Nakauchi³

et al. 2022

Sn-doped 30CaO-50B 2 O 3 -20SiO 2 glass samples were prepared by the conventional meltquenching method, and the photoluminescence (PL), scintillation, and thermally stimulated luminescence (TSL) properties were investigated. The PL and scintillation spectra of the Sndoped samples exhibited a broad luminescence band with a maximum at 410 nm due to a T 1 →S 0 transition of Sn 2+ , and the PL and scintillation decay time constants were approximately 5.7 and 6.3 μs, respectively. The Sn-doped samples exhibited TSL glow peaks at ~80 and 280 °C after X-ray irradiation, and the TSL intensity increased monotonically with the X-ray irradiation dose from 10 to 10000 mGy.

“…Phosphors with thermally or optically stimulated luminescence (TSL or OSL) properties are used for personal monitoring applications and in imaging plates. (1)(2)(3) When such phosphors electromagnetically interact with ionizing radiation, many holes and electrons are generated. Some of them instantaneously recombine at luminescence centers with an emission of photons (scintillation), and some others temporarily accumulate at trapping centers.…”

Section: Introductionmentioning

confidence: 99%

TSL and OSL Properties of Cu-doped CaF2 Ceramics Prepared by Spark Plasma Sintering

Kato¹,

Nakauchi²,

Kawaguchi³

et al. 2022

The thermally and optically stimulated luminescence (TSL and OSL) properties of Cu-doped CaF 2 ceramics synthesized by spark plasma sintering (SPS), as well as their scintillation and photoluminescence (PL) properties, were investigated. The PL and scintillation spectra showed emission peaks at 390 and 490 nm, which were ascribed to Cu + ions and Cu clusters, respectively, judging from the PL decay time constants. After X-ray irradiation, TSL and OSL were observed upon heating at 182 °C and irradiating light of 620 nm, respectively. The dominant luminescence centers in the TSL and OSL processes were considered to be Cu clusters. The 0.1% Cu-doped CaF 2 sample had a linear TSL response in the dose range from 0.01 to 1000 mGy.