Sensing the wavefront of x-ray free-electron lasers using aerosol spheres.
Opt Express
; 21(10): 12385-94, 2013 May 20.
Article
em En
| MEDLINE
| ID: mdl-23736456
ABSTRACT
Characterizing intense, focused x-ray free electron laser (FEL) pulses is crucial for their use in diffractive imaging. We describe how the distribution of average phase tilts and intensities on hard x-ray pulses with peak intensities of 10(21) W/m(2) can be retrieved from an ensemble of diffraction patterns produced by 70 nm-radius polystyrene spheres, in a manner that mimics wavefront sensors. Besides showing that an adaptive geometric correction may be necessary for diffraction data from randomly injected sample sources, our paper demonstrates the possibility of collecting statistics on structured pulses using only the diffraction patterns they generate and highlights the imperative to study its impact on single-particle diffractive imaging.
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1
Base de dados:
MEDLINE
Assunto principal:
Fotometria
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Refratometria
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Raios X
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Ressonância de Plasmônio de Superfície
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Aerossóis
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Lasers
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article