Absolute Luminescence Efficiency of Europium-Doped Calcium Fluoride (CaF2:Eu) Single Crystals under X-ray Excitation

Synthesis and luminescence of uniform europium- doped bismuth fluoride and bismuth oxyfluoride particles with different morphologies†

Low temperature X-ray luminescence of KNbO3 crystals

We have studied X-ray luminescence of KNbO3 single crystal. The 575 nm luminescence band has been studied in the temperature range of 15±45 K. The quenching parameters were found to be Q ˆ 12 3 meV and m ˆ 4 10 sÿ1. No luminescence has been observed under heavy ion excitation (Kr ions, 8.63 MeV/amu) even at 15 K. Ó 2000 Elsevier Science B.V. All rights reserved. PACS: 78.60.-b

Luminescence and excitation energy transfer in new fluoride crystals containing rare earth ions

Spectroscopic characteristics of Pr3+ and Eu3+ in K2Na2GdF7, K5Li2GdF10 and K3GdF6 fluoride matrices are considered. Crystal structures of these compounds have been ascertained based on X-ray measurement on single crystal samples. Energies of lattice vibrations have been derived from IR and Raman spectra. Spectroscopic features of crystals in the VUV region were studied using experimental facil...

Dislocation luminescence in GaN single crystals under nanoindentation

This work presents an experimental study on the dislocation luminescence in GaN by nanoindentation, cathodoluminescence, and Raman. The dislocation luminescence peaking at 3.12 eV exhibits a series of special properties in the cathodoluminescence measurements, and it completely disappears after annealing at 500°C. Raman spectroscopy shows evidence for existence of vacancies in the indented regi...

Luminescence and scintillation characterization of Silver doped KCl single crystal grown by Czochralski technique for photonic applications

In this study, the scintillation and optical properties of pure and silver doped potassium chloride (KCl:Ag) single crystals were reported. Pure and doped KCl bulk single crystals with a good optical quality and free from cracks were grown from the melt using Czochralski technique. Different analysis methods were used to study the optical and scintillation properties of the grown crystals. The ...