在复杂等离子体中观察Le Sage重力模拟物
Andrey V Zobnin1, Andrey M Lipaev1, Roman A Syrovatka1
1<a href="https://ror.org/04gns8903">Joint Institute for High Temperatures</a> RAS, Moscow, 125412, Russia.
Physical review. E
|October 19, 2024
概括
研究人员观察到塑料微粒在气体排放等离子体中分裂并形成密集的球体. 这种由等离子体诱导的吸引力驱动的现象模仿了天体物理过程,比如星云的崩.
科学领域:
- 血物理学的等离子体物理学
- 微粒子动力学 微粒子动力学
- 天体物理现象 天体物理现象
背景情况:
- 血中的微粒子悬浮容易发生复杂的相互作用.
- 了解微粒子行为对于基于等离子体的应用和天体物理建模至关重要.
- 以前的理论表明,密集的等离子体具有吸引力,但实验证据有限.
研究的目的:
- 实验性地研究气体排放等离子体中微塑料颗粒的碎片化和球体形成.
- 探索潜在的机制,特别是等离子体诱导的吸引力.
- 为了在观察到的现象和天体物理过程之间进行并行.
主要方法:
- 通过急剧增加等离子体密度来试验诱导碎片化和球体形成.
- 观察和测量形成的球体的大小和结构.
- 通过减少等离子体密度和观察球体分解来证明等离子体流动的作用.
- 使用分子动力学模拟来模拟微粒子云碎片化和球体形成.
主要成果:
- 成功地碎片化了微塑料颗粒,形成了密集的球形球粒 (直径0.14-1.1毫米),含有数以万计的微粒.
- 将球体形成归因于一种类似于Le Sage的吸引力机制,由球体内的等离子体损失驱动.
- 视觉证实了等离子体流在粒子吸引中的关键作用,通过在等离子体密度降低后的球体分解.
- 分子动力学模拟在质量上复制了星际星云中看到的碎片化和球体形成模式.
结论:
- 气体排放等离子体可以诱导微塑料颗粒的碎片化和自我组装,形成密集的球体.
- 观察到的现象是由等离子体诱导的吸引力驱动的,类似于引力不稳定性和勒萨奇理论.
- 实验发现和模拟为研究天体物理碎片化和崩过程提供了一个新的实验模型.
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