1. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, California 94305, Laboratory of Molecular Biophysics, Institute of Cell and Molecular Biology, Uppsala University, Husargatan 3, Box 596, S-75124 Uppsala, Sweden, Spiller X-ray Optics, Livermore, California 94550, and Centre for Free-Electron Laser Science, Universität Hamburg, Notkestraβe 85, 22607 Hamburg,...