Figure 1: Protons above 30 MeV (IMAGE) Osaka University Caption The protons above 30 MeV are accelerated at the intensity of 1018 Wcm-2. 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.