论文标题
在光场离子化等离子体中电子芯片不稳定性的生长和饱和度测量
Measurements of the growth and saturation of electron Weibel instability in optical-field ionized plasmas
论文作者
论文摘要
使用Ultrashort（1.8 PS），相对论（45 MeV）电子束从线性加速器中测量与电子热芯不稳定性相关的磁场的时间演变。发现自生成的磁场可以自组织成与少数PS中的螺旋形拓扑结构一致的准静态结构，并且这种结构持续在不足的等离子体中持续数十ps。测得的增长率与考虑到碰撞的动力学理论的预测非常吻合。磁陷阱被确定为主要的饱和机制。
The temporal evolution of the magnetic field associated with electron thermal Weibel instability in optical-field ionized plasmas is measured using ultrashort (1.8 ps), relativistic (45 MeV) electron bunches from a linear accelerator. The self-generated magnetic fields are found to self-organize into a quasi-static structure consistent with a helicoid topology within a few ps and such a structure lasts for tens of ps in underdense plasmas. The measured growth rate agrees well with that predicted by the kinetic theory of plasmas taking into account collisions. Magnetic trapping is identified as the dominant saturation mechanism.
