在具有缓慢参数激发的双稳定等离子体模型中,双分支和混合模式振荡
1School of Mathematics and Statistics, Yancheng Teachers University, Yancheng 224002, People's Republic of China.
Chaos (Woodbury, N.Y.)
|July 24, 2024
概括
这项研究分析了缓慢激发的双稳定等离子体模型中的分叉,揭示了复杂的动态,如周期翻倍和混乱的吸引力. 这些发现解释了在不同条件下影响等离子体行为的过渡机制.
科学领域:
- 等离子体物理学的物理学
- 非线性动力学是一种非线性动力学.
- 双分支线理论 双分支线理论
背景情况:
- 研究一种经过缓慢参数激发的双稳定等离子体模型.
- 专注于理解由快慢系统产生的复杂动态.
研究的目的:
- 用分析和数值来讨论周期性和混乱反应的分支.
- 探索由此产生的快慢运动和过渡机制.
- 分析缓慢刺激对两叉现象的影响.
主要方法:
- 在快速子系统中使用了通用波平衡方法.
- 在平均系统上进行了分叉分析.
- 采用梅尔尼科夫的方法和吸引力盆地来验证混乱.
主要成果:
- 确定了关键多元体的S形结构和同时超临界/次临界周期翻倍 (PD).
- 观察到与外部激发频率相关的分叉点的不同相对位置.
- 经过验证的混乱吸引力,边界危机和明显的分叉延迟模式 (典型和过度).
结论:
- 在分析和数值分叉图之间建立了良好的一致性.
- 解释了三个过渡机制:"周期的折叠-周期的折叠"",周期延迟的次临界PD的折叠"和"周期边界危机的折叠".
- 证明缓慢通道效应会影响分叉延迟,但不会影响边界危机.
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