Artificial Nucleus and Atomic Collapse (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption An artificial atomic nucleus made up of five charged calcium dimers is centered in an atomic-collapse electron cloud. Credit (Image Michael Crommie, Lawrence Berkeley National Laboratory) Usage Restrictions with credit as given 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.