Seminars

# PIER PHOTON SCIENCE COLLOQUIUM: Probing Melecules from Within using Ultra-Intense and Ultra-Fast X-Rays from LCLS FEL

## by Nora Berrah (Western Michigan University, Physics Department)

Friday, December 9, 2011 from to (Europe/Berlin)
at 28c Flash Seminarroom
 Description The response of molecular systems to the ultra-intense, femtosecond x-ray radiation from the hard x-ray FEL, the Linac Coherent Light Source (LCLS), 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 et al., PNAS 108, issue 41, 16912 (2011