Monitoring the structure-phase changes in graphites using temperature regularities of ion-induced electron emission

The correlation between the temperature dependences of ion-induced electron emission yield, modified surface crystalline structure and morphology of isotropic graphite MPG-8 and highly oriented pyrolytic graphite (HOPG) UPV-1T under high-fluence (F = 1018-1019 ion/cm2) 6-30 keV Ar+ ion irradiation has been studied and discussed. The target temperature has been varied during continuous irradiation from room temperature to 400 °C. Surface analysis has been performed by the RHEED and SEM techniques. A strong influence of electron transport anisotropy for HOPG has been observed.