Antineutrino emissions carry information about the core nuclide ratio in an active reactor core as the emitted antineutrino energy spectrum is directly dependent on the core isotope content. Of special interest are small changes in core content over time, as these directly relate to burn-up and material insertion or extraction, e.g. during refuelling. However, the sensitivity of a detection...
Muon Tomography (MT) has been shown to be a viable candidate for the assay of nuclear storage containers [1]. By reconstructing the trajectories of muons both entering and exiting a volume of interest, a 3D gradient density map can be built from the reconstructed scattering angle distributions. This technique is particularly useful when imaging shielded nuclear waste containers where...
This work investigates the performance of multi-mode detector crystals which can discriminate between neutron and gamma radiation within the same volume. Knowledge of performance metrics such as intrinsic neutron efficiency and gamma rejection ratio are vital when using such crystals hand held detection systems. As a result, the scatter corrected neutron efficiency to a 252Cf source...
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) has seen the installation of a global network of highly sensitive detection equipment, designed with the aim of detecting a nuclear explosion. The International Monitoring System (IMS) incorporates a number of technologies for detection of particulate and noble gas radionuclides, including high resolution gamma-ray spectroscopy. As a result of...
