Hamburg 2009 – wissenschaftliches Programm

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SYUF: Ultra-fast Dynamics in FEL Light Pulses

SYUF 2: SYUF II

SYUF 2.4: Hauptvortrag

Mittwoch, 4. März 2009, 18:00–18:30, VMP 8 HS

Ultrafast Coherent Diffractive Imaging at FLASH — •Henry Chapman — CFEL, DESY, Hamburg, Germany

We have carried out high-resolution single-pulse coherent diffractive imaging at the FLASH free-electron laser. The intense focused FEL pulse gives a high-resolution low-noise coherent diffraction pattern of an object before that object turns into a plasma and explodes. We are developing imaging of biological specimens beyond conventional radiation damage resolution limits, developing imaging of ultrafast processes and testing methods to characterize and perform single-particle imaging. In particular our method of time-delay holography gives measurements of the dynamics of materials irradiated with intense FEL pulses, with 1 fs temporal resolution.