Theoretical and experimental analysis of the modulated phase grating X-ray interferometer
Abstract X-ray grating interferometry allows for the simultaneous acquisition of attenuation, differential-phase contrast, and dark-field images, resulting from X-ray attenuation, refraction, and small-angle scattering, respectively. The modulated phase grating (MPG) interferometer is a recently dev...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-11-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-78133-8 |
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| _version_ | 1846172076750143488 |
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| author | Hunter Meyer Joyoni Dey Sydney Carr Kyungmin Ham Leslie G. Butler Kerry M. Dooley Ivan Hidrovo Markus Bleuel Tamas Varga Joachim Schulz Thomas Beckenbach Konradin Kaiser |
| author_facet | Hunter Meyer Joyoni Dey Sydney Carr Kyungmin Ham Leslie G. Butler Kerry M. Dooley Ivan Hidrovo Markus Bleuel Tamas Varga Joachim Schulz Thomas Beckenbach Konradin Kaiser |
| author_sort | Hunter Meyer |
| collection | DOAJ |
| description | Abstract X-ray grating interferometry allows for the simultaneous acquisition of attenuation, differential-phase contrast, and dark-field images, resulting from X-ray attenuation, refraction, and small-angle scattering, respectively. The modulated phase grating (MPG) interferometer is a recently developed grating interferometry system capable of generating a directly resolvable interference pattern using a relatively large period grating envelope function that is sampled at a pitch that is small enough that X-ray spatial coherence can be achieved by using a microfocus X-ray source or G0 grating. We present the theory of the MPG interferometry system for a 2-dimensional staggered grating, derived using Fourier optics, and we compare the theoretical predictions with experiments we have performed with a microfocus X-ray system at Pennington Biomedical Research Center, LSU. The theoretical and experimental fringe visibility is evaluated as a function of grating-to-detector distance. Additionally, quantitative experiments are performed with porous carbon and alumina compounds, and the mean normalized dark-field signal is compared with independent porosimetry measurements. Qualitative analysis of attenuation and dark-field images of a dried anchovy are shown. |
| format | Article |
| id | doaj-art-047e614befbc4c25bd68d1cb236774f0 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-047e614befbc4c25bd68d1cb236774f02024-11-10T12:15:34ZengNature PortfolioScientific Reports2045-23222024-11-0114111510.1038/s41598-024-78133-8Theoretical and experimental analysis of the modulated phase grating X-ray interferometerHunter Meyer0Joyoni Dey1Sydney Carr2Kyungmin Ham3Leslie G. Butler4Kerry M. Dooley5Ivan Hidrovo6Markus Bleuel7Tamas Varga8Joachim Schulz9Thomas Beckenbach10Konradin Kaiser11Department of Physics and Astronomy, Louisiana State UniversityDepartment of Physics and Astronomy, Louisiana State UniversityDepartment of Physics and Astronomy, Louisiana State UniversityCenter for Advanced Microstructures and Devices, Louisiana State UniversityDepartment of Chemistry, Louisiana State UniversityCain Department of Chemical Engineering, Louisiana State UniversityDepartment of Physics and Astronomy, Louisiana State UniversityAdelphi Technology, Inc.The Environmental Molecular Sciences Laboratory, Pacific Northwest National LaboratoryMicroworks GmbHMicroworks GmbHMicroworks GmbHAbstract X-ray grating interferometry allows for the simultaneous acquisition of attenuation, differential-phase contrast, and dark-field images, resulting from X-ray attenuation, refraction, and small-angle scattering, respectively. The modulated phase grating (MPG) interferometer is a recently developed grating interferometry system capable of generating a directly resolvable interference pattern using a relatively large period grating envelope function that is sampled at a pitch that is small enough that X-ray spatial coherence can be achieved by using a microfocus X-ray source or G0 grating. We present the theory of the MPG interferometry system for a 2-dimensional staggered grating, derived using Fourier optics, and we compare the theoretical predictions with experiments we have performed with a microfocus X-ray system at Pennington Biomedical Research Center, LSU. The theoretical and experimental fringe visibility is evaluated as a function of grating-to-detector distance. Additionally, quantitative experiments are performed with porous carbon and alumina compounds, and the mean normalized dark-field signal is compared with independent porosimetry measurements. Qualitative analysis of attenuation and dark-field images of a dried anchovy are shown.https://doi.org/10.1038/s41598-024-78133-8X-ray interferometryModulated phase gratingDiffraction gratingDark-fieldPorosity |
| spellingShingle | Hunter Meyer Joyoni Dey Sydney Carr Kyungmin Ham Leslie G. Butler Kerry M. Dooley Ivan Hidrovo Markus Bleuel Tamas Varga Joachim Schulz Thomas Beckenbach Konradin Kaiser Theoretical and experimental analysis of the modulated phase grating X-ray interferometer Scientific Reports X-ray interferometry Modulated phase grating Diffraction grating Dark-field Porosity |
| title | Theoretical and experimental analysis of the modulated phase grating X-ray interferometer |
| title_full | Theoretical and experimental analysis of the modulated phase grating X-ray interferometer |
| title_fullStr | Theoretical and experimental analysis of the modulated phase grating X-ray interferometer |
| title_full_unstemmed | Theoretical and experimental analysis of the modulated phase grating X-ray interferometer |
| title_short | Theoretical and experimental analysis of the modulated phase grating X-ray interferometer |
| title_sort | theoretical and experimental analysis of the modulated phase grating x ray interferometer |
| topic | X-ray interferometry Modulated phase grating Diffraction grating Dark-field Porosity |
| url | https://doi.org/10.1038/s41598-024-78133-8 |
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