Bo Chen, Fucai Zhang, Felisa Berenguer, Richard J Bean, Cameron M Kewish, Joan Vila-Comamala, Yong S Chu, John M Rodenburg, Ian K Robinson，“Coherent x-ray diffraction imaging of paint pigment particles by scanning a phase plate modulator”，New Journal of Physics 13 (10), 103022（2011）

【原文】

Coherent x-ray diffraction imaging of paint pigment particles by scanning a phase plate modulator

ABSTRACT

We have implemented a coherent x-ray diffraction imaging technique that scans a phase plate to modulate wave-fronts of the x-ray beam transmitted by samples. The method was applied to measure a decorative alkyd paint containing iron oxide red pigment particles. By employing an iterative algorithm for wave-front modulation phase retrieval, we obtained an image of the paint sample that shows the distribution of the pigment particles and is consistent with the result obtained from a transmission x-ray microscope. The technique has been experimentally proven to be a feasible coherent x-ray imaging method with about 120 nm spatial resolution and was shown to work well with industrially relevant specimens.