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首页> 外文期刊>Plasma physics and controlled fusion >Observations of parametric drift wave instabilities in an electron cyclotron resonance ion source
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Observations of parametric drift wave instabilities in an electron cyclotron resonance ion source

机译：电子回旋谐振离子源参数漂移波稳定性的观察

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The parametric drift wave instabilities in a magnetically confined plasma such as electron cyclotron resonance (ECR) ion source, have been observed by Fourier transform of beam current oscillations using a spectrum analyzer. The beam current oscillations are found to have frequencies in the range from few tens of Hz to few hundreds of kHz and are tunable over a wide range by varying the ECR parameters. These oscillations are attributed to drift waves and found to have sub-structural frequencies symmetrically on either side. They exist for every ion beam extracted from the ECR ion source. These observations made with oxygen plasma have been validated with xenon plasma and theoretically justified as drift waves by the local slab model for magnetically confined plasmas. Such drift waves may be used as a diagnostic tool to improve the performance of ECR ion source.
机译：通过使用频谱分析仪的光束电流振荡的傅里叶电流振荡傅里叶变换，已经观察到诸如电子回旋谐振（ECR）离子源的参数漂移波稳定性。 发现光束电流振荡在几十台Hz到几百kHz的范围内具有频率，并且通过改变ECR参数，在宽范围内可调。 这些振荡归因于漂移波并且发现在任一侧具有对称的子结构频率。 它们存在于从ECR离子源中提取的每个离子束。 通过氙等离子体验证了用氧等离子体进行的这些观察结果，并通过局部板式模型为磁局限制等离子体理论上是漂移波的理论上。 这种漂移波可以用作提高ECR离子源的性能的诊断工具。

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