Publications [#269365] of Ehsan Samei

Papers Published
  1. MacCabe, K; Krishnamurthy, K; Chawla, A; Marks, D; Samei, E; Brady, D, Pencil beam coded aperture x-ray scatter imaging, Optics Express, vol. 20 no. 15 (July, 2012), pp. 16310-16310 [doi] .

    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. © 2012 Optical Society of America.