Affiliation: | 1. Department of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA;2. Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;3. Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;4. Materials Research Group, School of Engineering Sciences, University of Southampton, Southampton SO17 1BJ, UK |