Nuclear Security

Innovative directional detector with 360° source localization coverage

Localization and identification of radioactive sources is a key issue for operators in nuclear facilities and homeland security. We propose a γ-ray detection system without moving parts, based on a scintillator crystal read out by an array of silicon …

Deep Learning-Based Isotope Identification for Radiological Crime Scene Investigations Using Convolutional Neural Networks

We address on-scene nuclear forensics with a portable NaI 3 inch detector by training a convolutional neural network on spectra synthesized from Geant4 event level pools with bootstrap resampling, mixed with measured background, and regularized via …

Spectrum analysis for identification of nuclides at radiological crime scene

Gamma-ray spectroscopy is an essential technique for identifying the composition of radioactive materials. This work presents a detailed algorithm for analysing gamma-ray spectra, focusing on peak detection, energy calibration, efficiency calibration …