Abstract
The electron beam induced structures on a LiF(100) surface were investigated by low-energy electron energy loss spectroscopy. During continued electron irradiation, we observed a loss peak induced at 2.8 eV in the band gap region of LiF, in addition to the other three electron induced peaks which had been formerly reported. The peak was assigned to an F 2 center. The temperature dependence of the peak formation by incident electrons was observed from 300 K to 500 K. The surface diffusion or evaporation seemed to affect the F 2 center formation and the restoring reaction on the surface.
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