UrFU Experiment (IMAGE) Ural Federal University Caption UrFU experiment on radiative recombination of excitons (exciton luminescence) at temperatures of liquid helium. Credit Anatoly Zatsepin Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.