Investigation of non-stationary self-focusing of intense laser pulse in cold quantum plasma using ramp density profile

被引：35
作者：
Habibi, M. [1 ]
Ghamari, F. [2 ]
机构：
[1] Islamic Azad Univ, Shirvan Branch, Dept Phys, Shirvan, Iran
[2] Islamic Azad Univ, Khorramabad Branch, Dept Phys, Khorramabad, Iran
来源：
PHYSICS OF PLASMAS | 2012年 / 19卷 / 11期
关键词：
RAY THOMSON SCATTERING; MAGNETIC-FIELDS; ELECTRON ACCELERATION; ELECTROMAGNETIC-WAVES; PONDEROMOTIVE FORCE; PROPAGATION; GENERATION; CHANNELS; ENERGY; MODULATION;
D O I：
10.1063/1.4768221
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The authors have investigated the non-stationary self-focusing of Gaussian laser pulse in cold quantum plasma. In case of high dense plasma, the nonlinearity in the dielectric constant is mainly due to relativistic high intense interactions and quantum effects. In this paper, we have introduced a ramp density profile for plasma and presented graphically the behavior of spot size oscillations of pulse at rear and front portions of the pulse. It is observed that the ramp density profile and quantum effects play a vital role in stronger and better focusing at the rear of the pulse than at the front in cold quantum plasmas. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768221]
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页数：6
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