本文研究了包含着高斯形初始扰动的非均匀强电磁辐射在等离子体中的细丝不稳定性.计算并讨论了细丝不稳定性与初始扰动的强度、横向尺寸和初始等离子体电子密度的关系.结果表明,叠加在线偏振平面电磁波上的高斯型大扰动,在等离子体中传播不远就将崩裂.

The filamentation instability of nonuniform intense electromagnetic radiation, which contains large-amplitude Gaussian intensity variations (i.e., hot spots), has been studied. The relations of this instability with the intensity and transverse scale length of the initial perturbation, and with initial plasma electron density have been calculated and discussed. The results indicate that the large-amplitude Gaussian perturbations superimposed on a linearly polarized plane electromagnetic wave will fall apart...