PPPL Physicists (IMAGE) DOE/Princeton Plasma Physics Laboratory Caption These are PPPL physicists Seung-Hoe Ku, Robert Hager, Choong-Seock Chang, and Randy Michael Churchill. Credit Elle Starkman / Princeton Plasma Physics Laboratory 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.