Related Experiment Video
Updated: Dec 9, 2025

A Simple Dewar/Cryostat for Thermally Equilibrating Samples at Known Temperatures for Accurate Cryogenic Luminescence Measurements
Published on: July 19, 2016
Correlation between thermoluminescence and optically stimulated luminescence responses of natural alexandrite
N M Trindade1, M R Cruz2, E M Yoshimura2
1Department of Physics, Federal Institute of Education, Science and Technology of São Paulo, IFSP, São Paulo, SP, Brazil; Institute of Physics, University of São Paulo - USP, São Paulo, SP, Brazil.
Abstract:
Luminescent properties of alexandrite crystals (BeAl2O4:Cr3+) are studied. Partial readouts of thermoluminescence (TL) and optically stimulated luminescence (OSL) signals were obtained to infer the relations of OSL and TL trapping centers. Four TL peaks were studied; their intensities decrease at different rates by illumination with blue OSL light. The OSL curve shows two-time components (exponential decay constants 3.15 and 28.4 s). The short time component is preferentially diminished when the sample is heated to temperatures from 363 to 513 K. About 50% of the whole TL intensity remains after a complete 300s OSL readout.
More Related Videos
09:41Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
Published on: August 2, 2021
06:08Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Related Concept Videos
Photoluminescence: Applications
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Atomic Emission Spectroscopy: Overview
Flame Photometry: Lab
Variables Affecting Phosphorescence and Fluorescence