2021/10/18 by Sebastian Ritter, Ritter, Sebastian
Environmental Science · Health Professions · Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex) #Radiation Detection and Scintillator Technologies #Radioactive contamination and transfer #Radioactivity and Radon Measurements
paper · pdf · doi:10.48550/arxiv.2111.07756
openalex publication_date 2021/10/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Aerial source detection systems have the capability to rapidly provide\nradiological data over a large area of land. Sodium Iodine (NaI) scintillator\nbased aerial radiation detection systems of compact physical sizes have the\npotential aid nuclear security applications in a cost-effective manner when\ndeployed on aerial vehicle systems. The Minimum Detectable Activity (MDA) of\nNaI scintillator airborne detectors is qualitatively evaluated as a function of\ndetector-source distance and as a function of detector-source relative speed.\nIt is found that the MDA increases exponentially with vehicle height and that\nMDA increases directly proportionally with the relative speed plus the square\nroot of the relative speed. Furthermore, detection limits of an aerial\ndetection system are evaluated in a case study. MDA is evaluated for the\nnuclear materials U-238 and Pu-239 as defined by the IAEA Safeguards Glossary\nTable II and MDA is evaluated for arbitrarily selected isotopes found in Table\nI.2 of the IAEA document TECDOC-1344.\n