X-ray submicrometer phase contrast imaging with a Fresnel zone plate and a two dimensional grating interferometer |
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Authors: | Berujon S Wang H Pape I Sawhney K Rutishauser S David C |
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Affiliation: | Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxon, UK. |
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Abstract: | The application of a two dimensional (2D) grating interferometer-Fresnel zone plate combination for quantitative submicron phase contrast imaging is reported. The combination of the two optical elements allows quick recovery of the phase shift introduced by a sample in a hard X-ray beam, avoiding artifacts observed when using the one dimensional (1D) interferometer for a sample with features oriented in the unsensitive direction of the interferometer. The setup provides submicron resolution due to the optics magnification ratio and a fine sensitivity in both transverse orientations due to the 2D analysis gratings. The method opens up possibilities for sub-micro phase contrast tomography of microscopic objects made of light and/or homogeneous materials with randomly oriented features. |
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