Two-Proton Decay in Iron-45 (IMAGE) Michigan State University Caption Image of tracks of two protons emitted in the decay of iron-45; research appearing in the journal Physical Review Letters the week of Nov. 5, 2007, represents the first-ever description of the angular correlation between these protons. Credit Marek Pfutzner, Warsaw University 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.