不正常光放电系统中复杂动态的形成机制:混合模式振荡和周期相加的分支
Zijia Chu1, Jingfeng Yao1,2, Chengxun Yuan1,2
1Harbin Institute of Technology, School of Physics, Harbin 150001, People's Republic of China.
Physical review. E
|June 19, 2025
概括
复杂的等离子动态,称为混合模式振荡 (MMO),由局部雪崩解释. 这些雪崩是由电压和等离子散射驱动的,阐明非线性系统中的下值振荡.
科学领域:
- 血物理学的等离子体物理学
- 非线性动力学是一种非线性动力学.
- 复杂的系统复杂的系统.
背景情况:
- 混合模式振荡 (MMO) 是在多时尺度系统中观察到的复杂的动态行为.
- 在等离子体系统中经常看到MMOs,但它们的微观物理机制仍然不清楚.
- 了解MMOs对于非线性和等离子体物理学至关重要.
研究的目的:
- 探索MMO中低于值的小振幅振荡和周期加分的背后的物理机制.
- 调查 Townsend 电离过程的作用及其对电场的非线性依赖.
- 阐明等离子体参数的时空演变导致复杂的动态.
主要方法:
- 使用一个单维的,时间依赖的,自我一致的等离子体流体模型.
- 分析 Townsend 电离的强烈非线性依赖于电场.
- 在各种动态状态下检查等离子体参数的时空演变.
主要成果:
- 在阴极和虚拟阳极之间,在散装等离子体内的局部雪崩被确定为MMO结构的关键.
- 这些雪崩是由快速电压增加和延迟等离子散射的相互作用造成的.
- 这项研究揭示了这些局部事件在塑造复杂的等离子体动态中的关键作用.
结论:
- 在非正常排放系统中MMO的形成受到局部血雪崩的显著影响.
- 这些发现提供了对驱动非线性散射系统中复杂振荡的潜在物理机制的洞察.
- 这项研究为了解和潜在地控制各种物理系统中的MMOs提供了基础.
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