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Color center creation in LiF crystals irradiated with Xe, Kr and N ions: Dependence on fluence and beam current density
Ist Teil von
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 2010-10, Vol.268 (19), p.3005-3008
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
2010
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Single LiF crystals were irradiated with Xe (195
MeV), Kr (117
MeV), and N (18
MeV) ions. Using absorption spectroscopy, color center creation was analyzed as a function of the ion energy loss, fluence, and flux. The concentration of single F centers and F
2 centers versus fluence and flux exhibits a nonlinear evolution with saturation at higher fluences. For LiF irradiated with N ions at high fluence, the concentration of F centers is proportional to the cube root of the flux indicating the strong interaction of primary hole centers. Macroscopic hillocks were observed in all irradiated LiF crystals by atomic force microscopy.