Figure 2 (IMAGE) Osaka University Caption Comparison of the electrostatic fields between the 3D simulation and the model. The inset shows the proton distribution around the center (color-coded in accordance with the distance from the center). Credit M. Murakami 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.