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We report the temperature dependence of the electrical resistivity of carbon at atmospheric pressure and temperatures up to and above the melting point at 4450±{}100 K. Vapor-grown graphite fibers of different crystalline perfection were heated with 28-{μ}sec electrical pulses. We also measure the transient reflectivity of graphite irradiated with picosecond laser pulses and find evidence for nonequilibrium heating. We conclude that liquid carbon is metallic with a nearly temperature-independent electrical resistivity of 30±{}8 {μ}{Ω}{·}dm.
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Heremans et al. (1988) studied this question.
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