It was recalled that ionizing radiation (γ-rays, electrons, swift heavy ions) created various point defects. The largest fraction of such defects consisted of paramagnetic F centers. The F centers were studied here by means of nuclear magnetic resonance. Nuclear spin relaxation (T1) measurements were used as a probe for the F centers, and offered the possibility of investigating their dynamics as a function of temperature and irradiation dose. In addition, it was possible to estimate the paramagnetic defect content, from the T1-data, over a wide range of concentrations. A radiation annealing which occurred at above 360K was also observed and analyzed.

F Centers in LiF - a Nuclear Magnetic Resonance Study. T.Klempt, O.Kanert, D.Suter: Physica Status Solidi B, 2003, 236[1], 151-65