Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma
Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma
复制标题
利用统计相位检测方法观察线性磁化等离子体中温度波动的时空结构
DOI：
10.1088/1361-6587/ab8132
复制
发表时间：
2020
影响因子：
2.2
通讯作者：
Fujisawa Akihide
中科院分区：
文献类型：
--
作者：
Kawachi Yuichi;Inagaki Shigeru;Kin Fumiyoshi;Yamasaki Kotaro;Kosuga Yusuke;Sasaki Makoto;Nagashima Yoshihiko;Yamada Takuma;Arakawa Hiroyuki;Kasuya Naohiro;Moon Chanho;Hasamada Kazunobu;Fujisawa Akihide
本文利用条件采样和统计相位检测方法，对电子温度涨落进行了估计。这些方法使我们能够在每个时间延迟时重建探针的I-V特性;也就是说，我们可以在没有复杂电子电路的情况下以高时间分辨率提取电子温度和离子饱和电流波动。我们的方法被应用到两个准相干涨落观察到的线性磁化等离子体装置，PANTA。我们观察到电子温度和离子饱和电流起伏的时空结构。结果揭示了电子温度和密度涨落之间的振幅和相位关系。
In this paper, we evaluated electron temperature fluctuations by using a conditional sampling and a statistical phase detection method. These methods allow us to reconstruct probe I− V characteristics at each time delay; that is, we can extract electron temperature and ion saturation current fluctuations in high temporal resolution without complex electronic circuits. Our method was applied to two quasi-coherent fluctuations observed in a linear magnetized plasma device, PANTA. We observed spatiotemporal structures of electron temperature and ion saturation current fluctuations. The results revealed the amplitudes and phase relation between electron temperature and density fluctuations.