Pencil beam coded aperture x-ray scatter imaging | Zendy

Kenneth P. MacCabe | Zendy; Kalyani Krishnamurthy | Zendy; Amarpreet S. Chawla | Zendy; Daniel L. Marks | Zendy; Ehsan Samei | Zendy; David J. Brady | Zendy

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Pencil beam coded aperture x-ray scatter imaging

Author(s) -

Kenneth P. MacCabe,

Kalyani Krishnamurthy,

Amarpreet S. Chawla,

Daniel L. Marks,

Ehsan Samei,

David J. Brady

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.016310

Subject(s) - optics , pencil (optics) , coded aperture , aperture (computer memory) , ptychography , beam (structure) , physics , materials science , diffraction , detector , acoustics

We use coded aperture x-ray scatter imaging to interrogate scattering targets with a pencil beam. Observations from a single x-ray exposure of a flat-panel scintillation detector are used to simultaneously determine the along-beam positions and momentum transfer profiles of two crystalline powders (NaCl and Al). The system operates with a 3 cm range resolution and a momentum transfer resolution of 0.1 nm−1. These results demonstrate that a single snapshot can be used to estimate scattering properties along an x-ray beam, and serve as a foundation for volumetric imaging of scattering objects.

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