在低密度等离子体中测量电线爆炸的电子密度,使用Shack-Hartmann波面传感器进行测量
Yiming Zhao1, Jian Wu1, Zhiyuan Jiang1
1National Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China.
The Review of scientific instruments
|September 12, 2025
概括
一种新的Shack-Hartmann波传感器方法准确地测量低密度等离子体电子密度. 这种技术为冠状病毒等离子体诊断提供了更好的空间范围和准确性,优于传统方法.
科学领域:
- 等离子体物理学的物理学
- 光学诊断器 视觉诊断器 视觉诊断器
- 波浪前线传感 波浪前线传感
背景情况:
- 由于传统诊断灵敏度和空间分辨率的局限性,测量低密度等离子体电子密度具有挑战性.
- 由电线爆炸产生的冠状病毒等离子体具有独特的诊断困难.
研究的目的:
- 通过使用Shack-Hartmann波浪前线传感器,为冠状体等离子体提出一种新的电子密度诊断方法.
- 为了提高低密度等离子体诊断的准确性和空间范围.
主要方法:
- 使用了Shack-Hartmann波面传感器,与纳米秒脉冲激光和高分辨率摄像头集成.
- 采用神经网络方法和微镜头光学模拟用于分像素中心位置定位.
- 验证了在脉冲前条件下由银线爆炸产生的冠状体等离子体的激光干扰测量技术.
主要成果:
- 与传统方法相比,实现了亚像素精度 (0.25像素),转移错误减少了21%.
- 已证明理论灵敏度高达 2 × 10^15 cm^-2. 这一点.
- 从线轴距离4.4毫米测量了2.2 × 10^16 cm^-2的最小电子密度,显示了比激光干扰计更广泛的空间范围.
结论:
- 沙克-哈特曼波面传感器方法对于诊断冠状体等离子体电子密度是有效的,特别是在低密度区域.
- 与现有方法相比,这种技术提供了更好的空间范围和精度.
- 未来的工作旨在优化该系统以减少错误和在大规模脉冲电力设施中的应用.
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