Radiochromic film (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Kei Nakamura, Lieselotte Obst-Huebl, and Anya Jewell (from left) show a radiochromic film that has been hit by the proton beam at BELLA’s iP2. Credit Marilyn Sargent/Berkeley Lab Usage Restrictions N/A License Original 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.