Basic studies of the generation and collective motion of pair-ion plasmas
Basic studies of the generation and collective motion of pair-ion plasmas
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DOI：
10.1063/1.2436854
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发表时间：
2007-03
影响因子：
2.2
通讯作者：
W. Oohara;R. Hatakeyama
中科院分区：
文献类型：
--
作者：
W. Oohara;R. Hatakeyama
产生了无电子的富勒烯对离子等离子体，并在低频范围内激发了沿沿着磁场线传播的静电模。发现等离子体中存在四种波模，包括理论上未预料到的波模，正负离子密度涨落之间的相位滞后强烈依赖于频率。为了进一步阐明在高频范围内对离子等离子体的集体运动，提出了仅由H+和H-组成的氢对离子等离子体的概念，并给出了实验配置。在Penning电离规放电产生氢等离子体的基础上，证明了离子回旋共振原理和E×B漂移运动原理在产生纯氢对离子等离子体中对离子种类的分析/选择和电子与负离子的分离探测是有效的。
A fullerene pair-ion plasma without electrons is generated and electrostatic modes propagating along magnetic-field lines are externally excited in the range of low frequencies. It is found that four kinds of wave modes, including theoretically unexpected ones, exist in the plasma, and the phase lag between the density fluctuations of positive and negative ions strongly depends on the frequency. In order to illuminate further collective motion of pair-ion plasmas in the range of high frequencies, a concept of a hydrogen pair-ion plasma consisting of only H+ and H− is proposed and an experimental configuration is presented. On the basis of the production of a hydrogen plasma by Penning ionization gauge discharge, the principles of ion cyclotron resonance and E×B drift motion are shown to be effective for ion-species analysis/selection and separated electron detection from negative ions in the generation of pure hydrogen pair-ion plasmas.