Fig.1 Quasistatic Magnetic Fields (IMAGE) Osaka University Caption Quasistatic magnetic fields computed by a laser-plasma simulation code, PICLS (a). Radiographic images of high energy protons which have a ring structure due to the magnetic diffraction. Credit Osaka 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.