Non-biological Applications of EPRI and PEDRI

As seen in the previous section, the majority of publications describing applications of EPRI and PEDRI are in the biomedical field. Nevertheless, there are a number of other areas of research where the techniques can provide important information which, in some cases, is not available by other means. 

Radiation dosimetry by EPR spectroscopy is a well-established field, but does not normally need the spatial discrimination offered by EPRI. However, Ohta and colleagues made use of EPRI to glean extra information from their EPR dosimetry measurements. They made use of the fact that irradiation of gadolinium-doped glaserite [K3Na(S04)2] rod produces EPR-detectable, stable SOs radicals in proportion to the radiation dose. EPRI measurements of 3 mm diameter rods after irradiation revealed heterogeneous radical distribution after 

P- and X-ray irradiation, while a much more homogeneous distribution was found after higher-energy y-ray (from °Co) irradiation. The authors were able to determine both the dose quality and the irradiation direction from analysis of the EPR images. 

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