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Ultrafast charge rearrangement and nuclear dynamics upon inner-shell multiple ionization of small polyatomic molecules

MPS-Authors

Erk,  Benjamin
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

Rolles,  Daniel
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

Foucar,  Lutz
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

Rudek,  Benedikt
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

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Epp,  Sascha
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

Cryle,  Max
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

Schlichting,  Ilme
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Erk, B., Rolles, D., Foucar, L., Rudek, B., Epp, S., Cryle, M., et al. (2013). Ultrafast charge rearrangement and nuclear dynamics upon inner-shell multiple ionization of small polyatomic molecules. Physical Review Letters, 110(5): 53003, pp. 1-5. doi:10.1103/PhysRevLett.110.053003.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-F218-6
Abstract
Ionization and fragmentation of methylselenol (CH(3)SeH) molecules by intense (>10(17) W/cm(2)) 5 fs x-ray pulses (ħω=2 keV) are studied by coincident ion momentum spectroscopy. We contrast the measured charge state distribution with data on atomic Kr, determine kinetic energies of resulting ionic fragments, and compare them to the outcome of a Coulomb explosion model. We find signatures of ultrafast charge redistribution from the inner-shell ionized Se atom to its molecular partners, and observe significant displacement of the atomic constituents in the course of multiple ionization.