Laboratoire Francis PERRIN
URA CNRS-CEA 2453
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Probing Matter from Within using Ultra-Intense and Ultra-Fast X-Rays from the LCLS Free Electron Laser Séminaires SPAM LFP
vers calendrier
26/01/2012 à 11h00
LIDYL Bât 522, p 138 CEA-Saclay
Nora BERRAH

Short x-ray pulses from free electron lasers (FEL) open a new regime for investigating multi-photon processes. The first x-ray FEL, the Linac Coherent Light Source (LCLS), is in operation, providing intense short pulses for investigating the creation and decay of multiple core-holes.


The response of molecular systems to the ultra-intense, femtosecond x-ray radiation was investigated. Sequential multiphoton ionization, frustrated absorption [1] and double core hole production mechanisms [2,3] will be presented.


 


[1] M. Hoener et al., Phys. Rev. Lett. 104, 253002  (2010)


[2] L. Fang et al., Phys. Rev. Lett 105, 083005 (2010).


[3] N. Berrah, Proc. Natl. Acad. Sci. USA (PNAS), 108, issue 41, 16912 (2011).