Dispersion Relations of Moving Striations

概要

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In order to make clear the wave nature of moving striations, the dispersion relations have been measured in rare gases, mercury-rare gases, and hydrogen gas by modulating the discharge current at an adequate audio-frequency signals, and the experimental formula of dispersion relation has been deduced. In case of the "positive" moving striations the dispersion curve in ω-k frame is approximated by a hyperbolic one while in case of the "negative" moving striations by a straight line. Generally the dispersion curve depends on the discharge current used, and in the positive moving striations there are two different types of the dependence on current: one is called "rare gas type" and the other "mercury-rare gas type". The group velocity expected from the experimental formula of dispersion relation is ascertained to coincide with the velocity of "wavepacket" excited artificially.
社団法人日本物理学会の論文
1967-04-05