The effect of 30-ns, 6943-{}, high-power laser irradiation on the surface of pristine and ion-implanted graphite has been studied by Rutherford-backscattering channeling spectrometry (RBS). The experimental results are explained by a model in which at a threshold energy density of 0.6 J/cm² the graphite surface melts, and the melt-depth measurements provide a simple estimate of the melting temperature ({~} 4300 K) and the latent heat of fusion of graphite ({~} 16 ±{} 5 kcal/mol).
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Venkatesan et al. (1984) studied this question.
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