(IMAGE) GSI Helmholtzzentrum für Schwerionenforschung GmbH Caption The experiments took place at the European XFEL. Credit © European XFEL/Heiner Müller-Elsner Usage Restrictions Free to use if the copyright is clearly stated. 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.