Mapping Spontaneous Decay (IMAGE) Washington University in St. Louis Caption The atom's paths through state space charted over time as it decays to its ground state due to spontaneous emission of light. Credit Kater Murch Usage Restrictions Please 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.