MOLECULAR DYNAMICS OF RADICALS IN THE SOLID STATE. ESR, ENDOR AND PULSED ESR STUDIES

摘要

In this communication I report the results of a series of studies by ESR, ENDOR and Electron Spin Echo on motions of radicals in solids. The radicals investigated were stable radicals obtained by gamma irradiation in single crystals (or crystalline powder). A large part of our results is based on the so called ENDOR amplitude spectroscopy method (Brustolon and Segre, 1989). The ENDOR intensities are often expressed as fractional enhancements of the ESR intensity: E=(I_(on)-I_(off))/I_(off) where I_(on) and I_(off) are, respectively, the ESR intensity at resonance with and without the radiofrequency field.