Ionizing radiation induced emission: Scintillation and storage-type luminescence

Abstract

a b s t r a c tIn solid state ionizing radiation detectors, mainly two types of luminescent materials, scintillators and dosimeter materials, have been investigated for a long time. The former one transduces the energy of high energy ionizing radiation (keV-GeV) to thousands of UV-visible photons immediately and the latter storages energies under radiation exposure. After the excitation by visible photons (OSL) or thermal energies (TSL), dosimeter materials release the storage energies by UV-visible emission. In this work, Ce-doped CaF 2 , Eu-doped LiCaAlF 6 , Ce-doped LiCaAlF 6 , and Pr-doped LuAG were evaluated on their scintillation, OSL, and TSL properties. In Ce-doped CaF 2 , Eu-doped LiCaAlF 6 , and Pr-doped LuAG, scintillation and dosimeter properties showed a complementally relation while Ce-doped LiCaAlF 6 exhibited different properties.

Optical and Near-Infrared Scintillation Properties of Nd3+-Doped YVO4 Crystals

“…Scintillation is usually dependent sensitively on the energy transfer process from the host crystal to the emission center. (19,20) Energy migration under UV excitation between the (VO 4 ) 3− molecular complex in the YVO 4 crystal and the emission centers with rare-earth ions has been reported in other papers. (21,22) Thus, it is suggested that the result is related to the energy migration from the YVO 4 host crystal to the Nd 3+ emission center.…”

X-ray-Induced Luminescence of SnO-SrO-B2O3 Glasses Prepared under Different Preparation Conditions

“…On the other hand, there is an inverse correlation observed between scintillation and storage luminescence in several phosphors. (34) The obtained result demonstrates that this inverse relationship is not adoptable to the present case, mainly owing to the network stabilization. Figure 5 shows the normalized emission peak area of the glasses as a function of quenching temperature.…”

Scintillation properties of Lu₃Al₅O₁₂ co-doped with Nd and Ce

“…TSL intensity greatly decreased in Nd 0.5% and Ce 0.5% doped sample compared the other co-doped LuAG samples. Recently it was found that the scintillation and TSL showed a complementary relation in similar host material with the same emission mechanism 33) and it could be interpreted that many careers were transported to the Ce 3+ luminescent center and most of the absorbed energy was released as a scintillation immediately. In YAG sample, glow peak was observed around 380°C, but TSL intensity was weaker than Nd 1.0% and Ce 0.05% doped LuAG sample and 170°C glow peak was also a different point with LuAG.…”