Measurement of thermodynamic parameters of graphite by pulsed laser irradiation and ion channeling.
01 January 1984
The effect of 30 ns, 6943angstroms high power laser irradiation on the surface properties of pristine and ion implanted highly oriented pyrolytic graphite (HOPG) has been studied. The surface crystallinity and its depth distribution has been investigated using Rutherford backscattering spectrometry (RBS). The experimental results are explained by a model in which at a threshold energy density of 0.6J/cm(2) the surface of the graphite melts and the fast regrowth subsequent to the rapid melt results in the formation of a disordered carbon layers at the surface.