Energy spectra of charged clusters recoiling from Xe+ irradiated graphite surface

We report on the heavy ion induced surface modification and clustering mech anisms in amorphous graphite using SEM and Direct Recoil Spectrometry. The charged clusters emanating as Direct Recoils - DRs from 50 to 150 keV Xe+ i rradiated graphite surface are detected in successive energy spectra at lar ge recoil angles. The SEM pictures of the irradiated regions reveal the eme rgence of the reconstructed surface with periodic surface features. The DR spectra have identified clustering mechanisms operating in amorphous graphi te under high fluence irradiations at grazing incidence that are related to the reconstructed surface features.