Gamage, K. A.A. and Crompton, A. J. (2022) Characterisation of Radioactive Contaminated Waste: Alpha-Induced Air-Fluorescence Detection Under Daylight Conditions. In: 17th International Conference on Environmental Science and Technology (CEST-2021), Athens, Greece, 1-4 Sep 2021, (doi: 10.30955/gnc2021.00230)
Full text not currently available from Enlighten.
Publisher's URL: https://cms.gnest.org/sites/default/files/Proceedings/cest2021_00230/cest2021_00230.pdf
Abstract
Short travel of alpha particles in environments complicated the detection and characterisation of alpha-emitting contamination in mixed radiation fields in nuclear decommissioning sites. As a result, detection of alpha-induced radioluminescence became popular in nuclear decommissioning applications. The detection has to be done under dark conditions or special lighting conditions, in order to prevent interference of alpha-induced radioluminescence with background light. However, stand-off detection even under daylight condition, can be achieved by detecting alpha-induced radioluminescence in the ultraviolet C wavelength range (180-280 nm). We have demonstrated the use of an UVTRON flame sensor, which is solar-blind (developed by Hamamatsu), detecting photons in the ultraviolet C wavelength range. Ultraviolet C radioluminescence from a Po-210 sample was detected in normal lighting conditions using the UVTRON, with very low background counts found in all environments. As the Ultraviolet C radioluminescence signal is small, gas flows of Ar, Xe, Ne, N2, Kr and P-10 were directed over the Po-210 sample to enhance radioluminescence with positive effect. In one instance Xe doubled the count in relation to an air atmosphere.
Item Type: | Conference Proceedings |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Gamage, Professor Kelum |
Authors: | Gamage, K. A.A., and Crompton, A. J. |
College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
Related URLs: |
University Staff: Request a correction | Enlighten Editors: Update this record