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2014 Fotonica AEIT Italian Conference on Photonics Technologies
Proton beams of energy 3 and 7 MeV, produced by a linear accelerator for protontherapy under development at ENEA Frascati, were used to irradiate lithium fluoride (LiF) crystals and 1 µ µ µ µm thick LiF films grown by thermal evaporation on glass substrates, in a fluence range from 10 11 to 10 15 protons/cm 2 . The irradiation of LiF induced the stable formation of aggregate visible-emitting F 2 and F 3 + color centers, which possess almost overlapping absorption bands around 450 nm and, underdoi:10.1109/fotonica.2014.6843923 fatcat:hq35iwc2zzauzgcviiyrjddbcq