Isochoric heating of foamed metal using pulsed power discharge as a making technique of warm dense matter |
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Authors: | Yusuke Amano Yasutoshi Miki Takuya Takahashi Toru Sasaki Takashi Kikuchi Nob Harada |
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Affiliation: | Department of Electrical Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188, Japan. |
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Abstract: | To generate well-defined warm dense state for evaluating electrical conductivity by using pulsed-power discharge, we have proposed an isochoric heating of foamed metal. Isochoric heating can be achieved by surrounding the foamed metal with a rigid-walled sapphire capillary. We evaluate the temperature and electrical conductivity of the foam∕plasma based on the line-pair method of the foam∕plasma emission and on the voltage-current waveforms. The electrical conductivity observed agrees with previous experiments and predictions. Thus, the proposed technique yields the electrical conductivity of warm dense matter with a well-defined temperature. |
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