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5 October 2023 Investigating ultraviolet LED decontamination of tritium contaminated surfaces
George K. Larsen
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Proceedings Volume PC12652, UV and Higher Energy Photonics: From Materials to Applications 2023; PC1265201 (2023) https://doi.org/10.1117/12.2677635
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
Tritiated surface contamination forms on ion chamber surfaces due to the isotope exchange between tritium in the ambient with protium on the surface. This creates a large background signal which impedes low level measurement. Ion chambers may be periodically cleaned to reduce the background, but this increases the risks of exposure to radiation and ion chamber breakage. We have previously described the use of ultraviolet LED light illumination as means to decontaminate ion chambers in a safe, hand-free manner. In this report, we further investigate the process for decontamination and the underlying mechanisms governing this process using in situ FTIR.
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George K. Larsen "Investigating ultraviolet LED decontamination of tritium contaminated surfaces", Proc. SPIE PC12652, UV and Higher Energy Photonics: From Materials to Applications 2023, PC1265201 (5 October 2023); https://doi.org/10.1117/12.2677635
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KEYWORDS
Contamination
Ions
Ultraviolet radiation
Vacuum chambers
Light emitting diodes
FT-IR spectroscopy
Hydrogen
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