Physics – Atomic and Molecular Clusters
Scientific paper
2010-09-14
New J. Phys. 13 (2011) 013028
Physics
Atomic and Molecular Clusters
14 pages, 6 figures, 1 table
Scientific paper
10.1088/1367-2630/13/1/013028
Intense light with frequencies above typical atomic or molecular ionization potentials as provided by free-electron lasers couples many photons into extended targets such as clusters and biomolecules. This implies, in contrast to traditional multi-photon ionization, multiple single-photon absorption. Thereby, many electrons are removed from their bound states and either released or trapped if the target charge has become sufficiently large. We develop a simple model for this photo activation to study electron migration and interaction. It satisfies scaling relations which help to relate quite different scenarios. To understand this type of multi-electron dynamics on very short time scales is vital for assessing the radiation damage inflicted by that type of radiation and to pave the way for coherent diffraction imaging of single molecules.
Gnodtke Christian
Rost Jan-Michael
Saalmann Ulf
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