Abstract
We present here an experiment in which an 11 μm thick iron ribbon is first bombarded at 5 K with 10–170 MeV iron ions in order to create an homogeneous population of defects located in displacement cascades. The length and electrical resistivity of the target increase during this phase of the experiment. Without any warming-up, the sample is then bombarded with 500 MeV iron ions (range 30 μm in iron). The slowing-down of these ions in the target occurs mainly via inelastic collisions. The electrical resistivity and length of the sample decrease during this last irradiation: we interpret this instability of pre-exiting cascade damage as a consequence of some transfer of the energy lost in electronic processes to lattice atoms. We thus show that electronic energy loss processes must be taken into account to study damage creation in some metals.
Published Version
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