J. Jensen et al., TRACKS INDUCED IN CAF2 BY MEV CLUSTER IRRADIATION, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 141(1-4), 1998, pp. 753-762
Samples of fluorite (CaF2) crystals were irradiated at 300 K with clus
ter ions of a few tens MeV at normal incidence. After irradiation the
samples were observed in a transmission electron microscope. The clust
er ions create intermittent tracks which are stable under the electron
beam. The tracks consist of aligned faceted anion voids, which can al
so be viewed as calcium inclusions. Furthermore, surface contrasts ass
ociated to sputtering are sometimes observed at the track entrance and
exit. (C) 1998 Published by Elsevier Science B.V. All rights reserved
.