title: Self-Referenced Coherent Diffraction X-Ray Movie of Ångstrom- and Femtosecond-Scale Atomic Motion.
abstract: Time-resolved femtosecond x-ray diffraction patterns from laser-excited molecular iodine are used to create a movie of intramolecular motion with a temporal and spatial resolution of 30 fs and 0.3 Å. This high fidelity is due to interference between the nonstationary excitation and the stationary initial charge distribution. The initial state is used as the local oscillator for heterodyne amplification of the excited charge distribution to retrieve real-space movies of atomic motion on ångstrom and femtosecond scales. This x-ray interference has not been employed to image internal motion in molecules before. Coherent vibrational motion and dispersion, dissociation, and rotational dephasing are all clearly visible in the data, thereby demonstrating the stunning sensitivity of heterodyne methods.
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: J M
authors: JM
authors: Glownia
authors: Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: A
authors: A
authors: Natan
authors: Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: J P
authors: JP
authors: Cryan
authors: Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: R
authors: R
authors: Hartsock
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: M
authors: M
authors: Kozina
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: M P
authors: MP
authors: Minitti
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: S
authors: S
authors: Nelson
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: J
authors: J
authors: Robinson
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: T
authors: T
authors: Sato
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: T
authors: T
authors: van Driel
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: G
authors: G
authors: Welch
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: C
authors: C
authors: Weninger
authors: Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors: D
authors: D
authors: Zhu
authors: Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|Departments of Physics, Applied Physics, and Photon Science, Stanford University, Stanford, California 94305, USA.
authors: P H
authors: PH
authors: Bucksbaum