在高性能高启动带电流分离融合等离子体中对动力气球模式的实验验证
1General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
Physical review letters
|October 20, 2023
概括
在DIII-D等离子体中观察到高频电磁波动,显示出一种自我调节的现象. 这些动力气球模式 (KBM) 在内部运输屏障 (ITB) 和中发挥着关键作用.
科学领域:
- 等离子体物理学的物理学
- 融合能源研究 融合能源研究
- 磁动力学是一种磁动力学.
背景情况:
- 像DIII-D这样的设备中的高启动电流分离等离子体对于聚变能源至关重要.
- 内部运输障碍 (ITB) 对于实现聚变等离子体的高性能至关重要.
- 了解等离子体流及其自我调节机制是控制聚变反应的关键.
研究的目的:
- 研究DIII-D等离子体中高频电磁波动的性质和影响.
- 为了确定特定类型的波动及其在等离子体内的位置.
- 确定这些波动在内部运输障碍的和中的作用.
主要方法:
- 使用诊断工具观察和描述高频电磁波动.
- 分析波动属性,如频率,波形波长和相位速度.
- 实验验证确定波动作为动力气球模式 (KBM).
- 准线性估计用于预测由KBM驱动的粒子和热流.
主要成果:
- 在 DIII-D.中观察连贯的高频电磁波动 (130-220 kHz).
- 波动的特点是波状波长 (16-30 m-1) 和相位速度 (~30 km/s).
- 实验验证确定这些为ITB地区的动力气球模式 (KBM).
- 预计KBM将驱动显著的粒子和热流.
结论:
- 观察到的KBM负责流引起的自我调节现象.
- 这些KBM在消除内部运输障碍 (ITB) 方面发挥着重要作用.
- 这些发现有助于理解聚变装置中的等离子体运输和控制.
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