ABSTRACT
The depth profiles of radicals are important in interpreting results obtained with radiation dosimeters. The stability of these radicals at room temperature makes them suitable for use in radiation dosimeters. The organic, solid dosimeters are used to determine radiation dose at a certain location. Stabilization of polymers is extremely important for materials exposed to solar radiation. Adequate knowledge of the distribution of the radicals is also required for radiation health physics. Electron paramagnetic resonance (EPR) imaging permits the conversion of the "point" dosimeters to a radiometer if the dose is measured as a function of depth from a sample surface. The use of EPR to study the nature of free-radical stabilization, spatial distribution, and kinetics of the reactions has been discussed in reviews. One-spectral and two-spatial dimensional EPR imaging has already been carried out but requires long imaging times.
