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Damage creation in lithium fluoride by Swift heavy ions in the electronic energy near the maximum of the Bragg’s peak

Author(s): H.Benhacine, S.Kadid

Single crystal samples ofLiFwere irradiated at roomtemperaturewith different energy of 0.7- 4.1MeV/u Pb+53 ions in fluence range from109 and 4.1012 ions/ cm2. are characterized by optical absorption and photoluminescence (PL) techniques were used for characterisation of the irradiated samples. The damage is dominated by the creation of simple defects (F centers) and aggregated defects (Fn centers). Their concentration increase of a function of fluence and energy. On the other hand two very intense PLbands observed at around 545 and 665 nm which correspond to the emission of F+ 3 and F2 centers respectively and increase linearly in the same fluence range.

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