使用法拉第旋转诊断对Z位等离子体前脉冲电流机制的实验研究
Zhiyuan Jiang1, Jian Wu1, Ziwei Chen1
1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China.
Physical review. E
|June 17, 2023
概括
预脉冲电流通过改善轴向均性和抑制不稳定性来优化Z-pinch等离子体爆裂. 这项研究揭示了机制,增强了未来的Z-pinch实验设计.
科学领域:
- 等离子体物理学的物理学
- 脉冲动力科学 脉冲动力科学
背景情况:
- 脉冲前电流对于优化Z-pinch等离子体负载结构和爆破质量至关重要.
- 了解预条件等离子体和脉冲磁场之间的合对于改善脉冲前电流应用至关重要.
研究的目的:
- 为了研究Z-pinch等离子体中前脉冲电流的机制.
- 为了确定预先条件和未预先条件的单线Z-pinch等离子体中的二维磁场分布.
主要方法:
- 使用高灵敏度法拉第旋转诊断.
- 测量了预先条件和未预先条件等离子体的二维磁场分布.
主要成果:
- 没有预先条件的血显示了与血边界一致的电流路径.
- 预条件等离子体在电流和质量密度分布中表现出更好的轴向均性.
- 当前外的爆炸速度超过了质量外的爆炸速度.
- 发现脉冲前电流抑制了磁铁-雷利-泰勒不稳定性,创造了尖的密度形状,并减缓了磁压驱动的冲击波.
结论:
- 脉冲前电流显著提高了Z-pinch等离子体爆破的均性和稳定性.
- 这些发现为设计先进的预条件电线阵列Z-pinch实验提供了必要的见解.
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