Tomographic Neutron Imaging using SIRT

Conference · Tue Jan 01 04:00:00 EST 2013

OSTI ID:1093159

Gregor, Jens ^[1]; FINNEY, Charles E A ^[2]; Toops, Todd J ^[2]

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1. University of Tennessee, Knoxville (UTK)
2. ORNL

Neutron imaging is complementary to x-ray imaging in that materials such as water and plastic are highly attenuating while material such as metal is nearly transparent. We showcase tomographic imaging of a diesel particulate filter. Reconstruction is done using a modified version of SIRT called PSIRT. We expand on previous work and introduce Tikhonov regularization. We show that near-optimal relaxation can still be achieved. The algorithmic ideas apply to cone beam x-ray CT and other inverse problems.

• Research Organization: Oak Ridge National Laboratory (ORNL); Fuels, Engines and Emissions Research Center
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1093159
• Country of Publication: United States
• Language: English