Measurement of the residual radioactivity induced in the front foil of a target assembly in a modern medical cyclotron. |
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| Authors: | R G O'Donnell L León Vintró G J Duffy P I Mitchell |
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| Affiliation: | Molecular Imaging Institute (M2i), Blackrock Clinic, Blackrock, Co. Dublin, Ireland. ruairiodonnell@eircom.net |
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| Abstract: | The levels of residual radioactivity induced in Havar foils at the entrance of a high-pressure 18O-enriched water target used for the production of 18F- in a medical cyclotron with 16 MeV protons have been determined using high-resolution gamma-ray spectrometry. Whole body and skin dose rates arising from exposure to these foils during their periodic replacement have been estimated. The results indicate that irradiated foils do not represent a significant radiological hazard for the cyclotron operating staff and that no waste disposal difficulties should be encountered after an appropriate 'cooling' period of 2 years. |
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