Generation of Low-Frequency Radiation Under the Laser Pulse Effect on a Plasma in a Magnetic Field

被引:6
|
作者
Ovchinnikov, K. N. [1 ]
Uryupin, S. A. [1 ]
机构
[1] Russian Acad Sci, Lebedev Phys Inst, Leninskii Prospect 53, Moscow 119991, Russia
关键词
terahertz radiation; femtosecond pulse; nonlinear current; ponderomotive force; magnetic field; SURFACE; WAKES;
D O I
10.1007/s10946-019-09827-y
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We reveal the possibility of a low-frequency radiation generation at a normal incidence of the laser pulse on a dense plasma in a constant magnetic field. The generation occurs due to the motion of electrons under the magnetic field effect and a ponderomotive force slowly varying with time localized in the skin layer where the laser radiation penetrates. The characteristic radiation frequencies are determined by the inverse duration of the laser pulse. We find the field strength of the radiation generated and its dependences on the Larmor frequency of electrons and the plasma and laser pulse parameters.
引用
收藏
页码:467 / 473
页数:7
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