Author pages are created from data sourced from our academic publisher partnerships and public sources.
Femtosecond electronic response of atoms to ultra-intense X-rays
An era of exploring the interactions of high-intensity, hard X-rays with matter has begun with the start-up of a hard-X-ray free-electron laser, the Linac Coherent Light Source (LCLS). Understanding… Expand
Time-resolved pump-probe experiments at the LCLS.
The first time-resolved x-ray/optical pump-probe experiments at the SLAC Linac Coherent Light Source (LCLS) used a combination of feedback methods and post-analysis binning techniques to synchronize… Expand
Ultra-fast and ultra-intense x-ray sciences: first results from the Linac Coherent Light Source free-electron laser
X-ray free-electron lasers (FELs) produce femtosecond x-ray pulses with unprecedented intensities that are uniquely suited for studying many phenomena in atomic, molecular, and optical (AMO) physics.… Expand
New Science Opportunities Enabled by LCLS-II X-ray Lasers
Nonlinear atomic response to intense ultrashort x rays.
The nonlinear absorption mechanisms of neon atoms to intense, femtosecond kilovolt x rays are investigated. The production of Ne(9+) is observed at x-ray frequencies below the Ne(8+), 1s(2)… Expand
Progress report on the LCLS XFEL at SLAC
The Linac Coherent Light Source (LCLS) Project will be an x-ray free-electron laser. It is intended to produce pulses of 800-8,000 eV photons. Each pulse, produced with a repetition frequency of up… Expand
Angular distributions of helium satellites He+ nl(n=2−7)
Helium photoelectron satellites He+ nl (n=2-7) have been studied with monochromatized synchrotron radiation. The angular distributions were determined in the photon energy range from 80 eV to 603 eV… Expand
Ultraintense x-ray induced ionization, dissociation, and frustrated absorption in molecular nitrogen.
- M. Hoener, L. Fang, +23 authors N. Berrah
- Materials Science, Medicine
- Physical review letters
- 23 June 2010
Sequential multiple photoionization of the prototypical molecule N2 is studied with femtosecond time resolution using the Linac Coherent Light Source (LCLS). A detailed picture of intense x-ray… Expand
Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption
Many photoinduced processes including photosynthesis and human vision happen in organic molecules and involve coupled femtosecond dynamics of nuclei and electrons. Organic molecules with heteroatoms… Expand
Double-core-hole spectroscopy for chemical analysis with an intense X-ray femtosecond laser
- N. Berrah, L. Fang, +17 authors M. Ehara
- Chemistry, Medicine
- Proceedings of the National Academy of Sciences
- 3 October 2011
Theory predicts that double-core-hole (DCH) spectroscopy can provide a new powerful means of differentiating between similar chemical systems with a sensitivity not hitherto possible. Although DCH… Expand