Ponderomotive Force on Laser‐Produced Plasmas
Ponderomotive Force on Laser‐Produced Plasmas
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激光产生的等离子体有质动力
DOI：
10.1063/1.1693437
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发表时间：
1971
期刊：
影响因子：
--
通讯作者：
P. Kaw
中科院分区：
文献类型：
--
作者：
J. Lindl;P. Kaw
本文用解析方法研究了强电磁波作用在线性非均匀等离子体层上的定质动势。由于在介电常数e′→0附近，有源力达到最大值，因此需要精确解出波动方程，才能正确估计最大力。对于电矢量在入射面上的斜入射情况，精确波动方程的解导致了一个有趣的共振效应，它预测的力比以前的工作者使用WKB程序得到的要高。物理上，这种增强的自重动势是由于在该几何形状的e′≈0区域产生的大的非均匀纵向场。
The deconfining ponderomotive force exerted by an intense electromagnetic wave on a linearly inhomogeneous plasma layer has been analytically investigated. Since the ponderomotive force maximizes near the region where the dielectric constant e′ → 0, an exact solution of the wave equation is required for a correct estimate of the maximum force. For the case of oblique incidence with the electric vector in the plane of incidence, the solution of the exact wave equation leads to an interesting resonance effect which predicts a force higher than that obtained by earlier workers using a WKB procedure. Physically, this enhanced ponderomotive force arises because of the large nonuniform longitudinal fields that are generated in the region e′ ≈ 0 for this geometry.