Multisource Direction Identification Using a Rotating Scatter Mask
Abstract
The objective of this thesis was to develop the methodology and prove that the rotating scatter mask (RSM) can identify the direction of multiple gamma radiation sources. There exist various systems for the purpose of source imaging, but all are hindered by either a high cost, a large size, a narrow field of view, or a low geometric efficiency. The RSM mitigates those issues and provides an efficient means of determining the direction of a radioactive source. The RSM consists of a 3"x3" NaI(Tl) scintillating detector encompassed by a polymethacrylate scattering mask designed to predictably attenuate gamma rays traveling through it to the detector. Previous experimental and simulations proved the viability of using the variation of full energy counts as a function of the rotation angle of the mask to provide a detector response curve (DRC). Each position relative to the RSM assembly results in a unique DRC that can be used to identify the direction of a radioactive source. The results of this thesis proved that the RSM can also be used to simultaneously identify the direction of multiple gamma ray sources with distinguishable full energy peaks and with indistinguishable full energy peaks by using a deconvolution algorithm.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 22, 2018
- Accession Number
- AD1056236
Entities
People
- Zachary T. Condon
Organizations
- Air Force Institute of Technology