On the symmetry of photon detection arrays: A directionally sensitive 3D model

Appl Radiat Isot. 2024 Feb 2;206:111219. doi: 10.1016/j.apradiso.2024.111219. Online ahead of print.ABSTRACTA detector's ability to obtain the direction of a radioactive source is an invaluable operational asset. A 2D/3D model was developed based on directionally sensitive arrays. The average location of photon interactions within a symmetrical array yields the direction of the source. The model is validated with simulations and laboratory measurements, maximum systematic error being 5-10° at energies >200 keV and approaching zero at lower energies. The symmetry model yields the direction of a shielded source even when no full energy photons could be detected.PMID:38320378 | DOI:10.1016/j.apradiso.2024.111219
Source: Applied Radiation and Isotopes - Category: Radiology Authors: Source Type: research