b'Fast, High ResolutionInexpensive and high-resolution autoradiographic imaging technology enables Autoradiographic Imagingapplications in nuclear quality assurance, radiological emergency response, and of Localized, Small Fissionpost-irradiation examination of materials.Product ContainingT his research developed and proved the principle of a novel autoradiographic method based on a bench-scale prototype integrating Samples for Nuclear Qualityan electron-multiplying charged coupled device sensor and an inorganic scintillator-based method. Rapid analysis of the spatial distribution Assurance, Radiologicalof radioactivity in samples demonstrated with the prototype will enable Emergency Response, andmany applications in the nuclear industry, such as nuclear quality assurance, radiological emergency response, and post-irradiation examination of materials at Nuclear Forensics a nuclear reactor or accelerator facility. This new capability addresses a limitation of current autoradiography methodologies in which image formation occurs directly from radiation emitted by the object itself, providing a two-dimensional image of the spatial distribution and relative intensity of radiation emitted from the analyzed sample. Traditional autoradiographic imaging methods of nuclear materials, such as film autoradiography or imaging plate technology, can be time-TOTAL APPROVED AMOUNT:consuming and costlyproblematic when samples must inform emergent safety $127,042 over 1 year decisions or capture essential time-dependent information.PROJECT NUMBER: 20A1049-016PRINCIPAL INVESTIGATOR: Ariana FoleyCO-INVESTIGATOR:Julie Bowen, INL(Left) A series of autoradiographic images of a 50 mm glass particulate filter compared to a conventional gain image at 1000, 3000, and 5000 s exposure times. The non-radioactive features such as the logos can be seen in the image. (Top right) A two-dimensional pixel intensity profile of the second from the top row with image quality assessments (i.e., full width half maximum and signal to noise ratio) of the autoradiographic images. (Bottom right) A three-dimensional intensity plot of a selection of the 5000 s exposure autoradiographic image that shows the collection of higher activity regions in the filter pores.70'