Ion Trap for Nuclear Clock (IMAGE) Georgia Institute of Technology Caption This RF ion trap at the Georgia Institute of Technology holds individual thorium atoms while they are laser-cooled to near absolute zero temperature. Credit Corey Campbell 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.