Exploring the wavefront of hard X-ray free-electron laser radiation.

Abstract:

:The high photon flux and femtosecond pulse duration of hard X-ray free-electron lasers have spurred a large variety of novel and fascinating experiments in physical, chemical and biological sciences. Many of these experiments depend fundamentally on a clean, well-defined wavefront. Here we explore the wavefront properties of hard X-ray free-electron laser radiation by means of a grating interferometer, from which we obtain shot-to-shot wavefront information with an excellent angular sensitivity on the order of ten nanoradian. The wavefront distortions introduced by optical elements are observed in-situ and under operational conditions. The source-point position and fluctuations are measured with unprecedented accuracy in longitudinal and lateral direction, both during nominal operation and as the X-ray free-electron laser is driven into saturation.

journal_name

Nat Commun

journal_title

Nature communications

authors

Rutishauser S,Samoylova L,Krzywinski J,Bunk O,Grünert J,Sinn H,Cammarata M,Fritz DM,David C

doi

10.1038/ncomms1950

subject

Has Abstract

pub_date

2012-07-10 00:00:00

pages

947

issn

2041-1723

pii

ncomms1950

journal_volume

3

pub_type

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