Hello, I am a summer student at Babcock & Wilcox Canada. I am doing some research regarding some radionuclides. I have the activity levels of three series radionuclides; Thorium 232, Uranium 235, and Uranium 238. I would like to figure out how to convert these radionuclides into their aborbed doses. The elements inside the Thorium 232 series and the activity levels are: Radionuclide Activity (Bq/kg) Thallium 208 59 Lead 212 174 Bismuth 212 100 Actinium 228 155 The elments inside the Uranium 235 series are: Radium 223 93 Thorium 227 48 The elements inside the Uranium 238 series are: Thorium 234 666 Radium 223 1628 Lead 214 888 Bismuth 214 851
If anyone could help me find the absorbed dosage of any of these radioisotopes I would greatly appreciate the assistance.
Re:Absorbed Dose of Radionuclides Further the previous formulae I did some more digging. The absorbed dose is difficult to calculate as you have to individually calculate the different forms of radiations (ie Gamma. Beta, Alpha and Neutron) as each has its own weighting factors then additional factors are used for different parts of the body. For instance Alpha particles are significantly reduced by paper and skin but if the dose is internally, for example if ingested the factor is larger.
The factors are detailed in the International Commission on Radiological Protection, Recommendations of International Commission of Radiological Protection, ICRP Publication 26 (Annals of ICRP, Vol 1 No 3) Pergammon Press, Oxford 1977
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