Experimental Evidence of m=-1 Helicon Wave Cutoff in Plasmas(Gases, Plasmas and Electric Discharges)
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概要
- 論文の詳細を見る
A phased multiple helical antenna selectively excites electromagnetic fields with the azimuthal mode numbers of m=+1 and -1 in a low-density plasma independently of magnetic field strength. Both the m=+1 and -1 helicon waves excited by the antenna are observed to propagate in the plasma at magnetic fields lower than 5mT. The m=+1 helicon wave propagates even in higher magnetic fields where density peaks are not observed, but only the m=-1 helicon wave disappears. The cutoff behavior of the m=-1 helicon wave experimentally observed coincides with a theoretical expectation that this helicon wave is forbidden to propagate in a low-density region.
- 社団法人日本物理学会の論文
- 2006-04-15
著者
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OOHARA Wataru
Department of Electronic Engineering, Tohoku University
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Sato Genta
Department Of Electronic Engineering Tohoku University:(present Address)research Institute Of Electr
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Sato Genta
Department Of Electronic Engineering Tohoku University
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Hatakeyama Rikizo
Department Of Electronic Engineering Tohoku University
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Oohara Wataru
Department Of Electronic Engineering Tohoku University
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