Melting and Volume Vaporization Kinetics Effects in Tungsten Wires at the Heating Rates of 1012 to 1013 K/s

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Abstract

Experimental results on electrically exploded tungsten wires at the heating rates of 1012–1013K · s−1 and their interpretation in the framework of a one-dimensional magneto-hydrodynamic model are presented. The effects of both melting and volume vaporization observed in these experiments are discussed. It is shown that superheating of solid tungsten does not take place at these heating rates (within a 10% experimental uncertainty). Some direct measurements performed in this study, and comparison of different quantities measured and calculated by the model, suggest that the volume vaporization starts close to a binodal line.

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