Abstract
We show for the first time that irradiation at room temperature of alkali iodide crystals by fast heavy ions ( 40Ar 14+ ions of 5.53 MeV/A at a fluence of 10 13 ions/cm 2) leads to the formation of V-type defects. By means of UV visible optical absorption and resonant Raman scattering measurements, we have identified I − 3, I − 5 and (I 2) n, in Kl and only I − 3 and I − 5 in RbI irradiated under similar conditions. These preliminary results are consistent with previous investigations obtained in iodide crystals after exposure to X or γ rays at room temperature.
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