title: 3D imaging using combined neutron-photon fan-beam tomography: A Monte Carlo study.
abstract: The application of combined neutron-photon tomography for 3D imaging is examined using MCNP5 simulations for objects of simple shapes and different materials. Two-dimensional transmission projections were simulated for fan-beam scans using 2.5MeV deuterium-deuterium and 14MeV deuterium-tritium neutron sources, and high-energy X-ray sources, such as 1MeV, 6MeV and 9MeV. Photons enable assessment of electron density and related mass density, neutrons aid in estimating the product of density and material-specific microscopic cross section- the ratio between the two provides the composition, while CT allows shape evaluation. Using a developed imaging technique, objects and their material compositions have been visualized.
authors.affiliation: University of Nevada, Las Vegas, NV 89154, USA. Electronic address: hartma43@unlv.nevada.edu.
authors.forename: J
authors.initials: J
authors.lastname: Hartman
authors.affiliation: University of Nevada, Las Vegas, NV 89154, USA.
authors.forename: A Pour
authors.initials: AP
authors.lastname: Yazdanpanah
authors.affiliation: University of Nevada, Las Vegas, NV 89154, USA.
authors.forename: A
authors.initials: A
authors.lastname: Barzilov
authors.affiliation: University of Nevada, Las Vegas, NV 89154, USA.
authors.forename: E
authors.initials: E
authors.lastname: Regentova
keywords: CT reconstruction; Combined neutron-photon imaging; MCNP5; Material discrimination; Monte Carlo modeling