Feasibility study of Compton imaging for PGAA
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We are developing a one-sided tomographic method for imaging prompt gamma rays, without moving the source, sample, or detector, in a standard prompt gamma activation analysis setting. Dual-plane pixelated CdZnTe detectors developed from a commercial system with external timing synchronization electronics are used to measure prompt gamma rays that are scattered in the first plane and subsequently absorbed in the second plane. Tomographic images have been reconstructed from the 2.2 MeV gamma rays from H in 3 mm plastic balls using inter-plane events for the first time, demonstrating the feasibility of spatially resolving mm scale H features.
KeywordsPrompt gamma activation analysis (PGAA) Compton imaging Spatially resolved PGAA
The work performed by H3D was supported by the National Institute of Standards and Technology (NIST) under cooperative agreement 2018-NIST-SBIR-01: Subtopic 9.02.02.63.
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