玄龙50号球面上高频磁探头对能量电子驱动发射的射频测量

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Plasma Science & Technology Pub Date : 2023-02-08 DOI:10.1088/2058-6272/aca373

Mingyuan Wang, Xiuchun Lun, Xiaokun Bo, Bing Liu, Adi Liu, Yuejiang Shi

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引用次数: 2

摘要

设计并研制了一种用于测量高频磁场波动的高频磁探头，该探头安装在玄龙-50 (EXL-50)球环面上。对探头的磁路、射频滤波器、射频限制器和数据采集系统进行了全面的研究。利用快速傅里叶变换对EXL-50等离子体的波动数据进行时频分析。此外，使用该诊断系统可以检测到明显的高频不稳定性。特别是，观察到明显的频率啁啾，这与使用Berk-Breizman模型预测的碰撞尾驱动不稳定性一致。

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Radio-frequency measurements of energetic-electron-driven emissions using high-frequency magnetic probe on XuanLong-50 spherical torus

Abstract A high-frequency magnetic probe is designed and developed on the XuanLong-50 (EXL-50) spherical torus to measure high-frequency magnetic field fluctuation. The magnetic loop, radio filters, radio-frequency limiter, and data acquisition system of the probe are comprehensively examined. The fluctuation data from the EXL-50 plasma are analyzed in the time–frequency domain using fast Fourier transforms. Moreover, distinct high-frequency instabilities are detected using this diagnostic system. In particular, significant frequency chirping is observed, which is consistent with the bump-on-tail drive instability predicted using the Berk–Breizman model.

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来源期刊

Plasma Science & Technology 物理-物理：流体与等离子体

CiteScore

3.10

自引率

11.80%

发文量

3773

审稿时长

3.8 months

期刊介绍： PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.