Optimization of Detector Movement Algorithm Using Decision Trees Analysis for Radiation Source Identification Based on 4π Gamma Imaging

For accurate identification of radiation sources using 4π gamma imaging, the selection rule of measurement points around target sources was investigated. In a simple computational model of the 4π gamma imaging, the detector movement algorithm was optimized by decision trees analysis. According to the proposed algorithm, a ¹³⁷ Cs point source was identified using a multi-pixel CdTe detector mounted on an unmanned vehicle as a prototype 4π gamma imager.