Publications by authors named "Romana Kucerkova"
In this study, we propose novel three-layer composite scintillators designed for the simultaneous detection of different ionizing radiation components. These scintillators are based on epitaxial structures of LuAG and YAG garnets, doped with Ce and Sc ions. Samples of these composite scintillators, containing YAG:Ce and LuAG:Ce single crystalline films with different thicknesses and LuAG:Sc single crystal substrates, were grown using the liquid phase epitaxy method from melt solutions based on PbO-BO fluxes.
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- Materials for radiation detection are essential across various fields such as science, medicine, security, and environmental monitoring, and low-dimensional halides (LDHs) have shown promise as scintillators due to their efficient photon emission.
- An innovative approach significantly improves exciton-harvesting in zero-dimensional CsCuI:Tl single crystals by suppressing harmful exciton interactions, leading to impressive performance metrics, including a high scintillation yield and excellent discrimination capabilities for detecting radiation.
- The research highlights CsCuI:Tl's potential in practical applications, such as a radiation detector prototype capable of identifying radioactive gases, showcasing the broader usefulness of LDH materials in radiation detection.
Fast emitting polymeric scintillators are requested in advanced applications where high speed detectors with a large signal-to-noise ratio are needed. However, their low density implies a weak stopping power of high energy radiation and thus a limited light output and sensitivity. To enhance their performance, polymeric scintillators can be loaded with dense nanoparticles (NPs).
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- The (Lu,Gd)(Ga,Al)O garnet crystals show high scintillation efficiency, with a maximum light yield of 50,000 ph/MeV.
- Recent advancements have led to the development of single-crystalline and composite film/crystal scintillators, which can distinguish between different types of particles like α, β, and γ using pulse shape discrimination.
- New findings indicate that specific compositions, especially the LuGdAlGaO:Ce film on GAGG:Ce substrate, demonstrate suitable light yields and varying decay curves for α and γ radiation, making them promising for particle identification.
Lead-Free Zero-Dimensional Organic-Copper(I) Halides as Stable and Sensitive X-ray Scintillators.
ACS Appl Mater Interfaces
March 2022
Low-dimensional organic-metal halides are regarded as an emerging class of X-ray scintillation materials, but most of the discovered compounds are confronted with challenges of toxicity and instability. To address these challenges, we herein report two lead-free zero-dimensional (0D) hybrid halides, (Bmpip)CuBr and PPhCuBr single crystals, grown by the low-cost solution-processing method. By single-crystal X-ray diffraction refinement, the crystal structures of (Bmpip)CuBr and PPhCuBr were determined to be orthorhombic and monoclinic crystal systems, respectively.
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- Researchers studied how crosslinked polymer composites loaded with luminescent gold clusters and the dye rhodamine 6G could enhance scintillation, which is the light emitted when a material absorbs radiation.
- They used rate equations to analyze how the excited states of these materials change over time and derived a formula to measure the effectiveness of sensitization based on specific parameters.
- The findings suggest that creating complexes with sensitizers and emitters is key to improving the scintillation effect in these composite materials.
A novel all-inorganic CsCuI single-crystalline perovskite as a nonhygroscopic and efficient X-ray and γ-ray scintillator is described herein. It is featured by a one-dimensional (1D) perovskite structure with an orthorhombic system and a space group of . The CsCuI crystal emits yellow light peaking at 570 nm originated from strongly localized 1D exciton emission.
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