Abstract
Procedures for producing 2-D images of the distribution of paramagnetic centers in solids using cw EPR procedures are described. The method makes use of static magnetic field gradients. An on-line microcomputer is used for data capture and for image generation in a gray-scale or color pixel representation. Applications of the method to a number of systems including natural and electron-irradiated diamond, irradiated silica gloss, and irradiated calcium orthophosphate are described. Representative images of paramagnetic defect distributions are presented. The resolution achieved is limited by the natural linewidth; the gradient magnitude, and the pixel size used. These factors are discussed in relation to methods for improving resolution.
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