等离子体云

人工等离子体云的时间演化

Time evolution of artificial plasma cloud

太阳的空间观测与研究Ⅱ&太阳高能粒子和等离子体云的抛射

Space Observation and Study of the Sun . ⅱ . Ejection of the Solar Energetic Particles and Plasma Clouds

焊接过程要得以完成，激光束就必须穿过此等离子体云以到达工件表面。

The welding process can be completed none but the laser beam goes through the plasma to the surface of the work-piece .

严重时，等离子体云甚至会对激光束产生反射和离焦，阻隔激光束的传播，从而导致熔深不足、过烧、焊缝形状波动且不规则，或者损伤聚焦光学镜片；

Excess plasma can block , reflect , or refocus the laser beam , resulting in insufficient penetration , burn - through , irregular weld shape , or contamination of beam delivery optics .

分析了高空中人工等离子体云的时间演化，发现人工等离子体云中电子密度的空间分布存在着指数衰减区和平缓衰减区。

By analyzing the time evolution of an artificial plasma cloud at high altitude , we found that there are two zones , exponential attenuation zone and linear attenuation zone , in the spatial distribution of electron density of artificial plasma cloud s.

位于小孔上方的等离子体叫做等离子体云，而存在于小孔内部的等离子体则称为孔内等离子。

Plasma resides both outside and inside the keyhole , known as plasma plume and keyhole plasma , respectively .