Tracing Tungsten in DIII-D (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL researchers used natural tungsten (yellow) and enriched tungsten (orange) to trace the erosion, transport and redeposition of tungsten. Tungsten is the leading option to armor the inside of a fusion device. Credit Jaimee Janiga/ORNL Usage Restrictions With credit 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.