Promethium research leaders (IMAGE) DOE/Oak Ridge National Laboratory Caption This groundbreaking promethium research was led by, from left, Alex Ivanov, Santa Jansone-Popova and Ilja Popovs, all of ORNL. Credit Carlos Jones/ORNL, U.S. Dept. of Energy Usage Restrictions None License Original 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.