...
首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Second harmonic stimulated Compton scattering of laser in a plasma
【24h】

Second harmonic stimulated Compton scattering of laser in a plasma

机译:等离子体中激光的二次谐波激发康普顿散射

获取原文
获取原文并翻译 | 示例
           

摘要

An intense laser of frequency omega(0) and wavenumber (k) over right arrow (0) produces longitudinal electron velocity (v) over right arrow (2 omega 0) at (2(omega 0), 2 (k) over right arrow (0) ). This velocity couples a plasma wave (omega, (k) over right arrow) and a sideband electromagnetic wave (omega- 2(omega 0), (k) over right arrow - 2 (k) over right arrow (0)). The density perturbation associated with the plasma wave couples with (v) over right arrow (2 omega 0) to produce a nonlinear current driving the sideband. The magnetic field of the sideband couples with (v) over right arrow (2 omega 0) to exert a pondero-motive force on electrons driving the plasma wave. The process can take place at any density n(e) up to the critical density n(cr) corresponding to laser frequency omega(0). At electron temperature T-e >= 1 keV, the plasma wave is strongly Landau damped on electrons for n(e) <= n(cr)/4, and the process appears as stimulated Compton scattering (SCS) producing side bands at second harmonic laser frequency shifted by the plasma frequency. At laser intensity I-L approximate to 10(17) W cm(-2) at 1 mu m, the SCS instability grows on a sub pico second timescale.
机译:在右箭头(0)上具有频率omega(0)和波数(k)的强激光,在右箭头(2(omega 0),2(k)处)在右箭头(2 omega 0)上产生纵向电子速度(v) (0))。此速度将等离子波(ω,在右箭头上的(k))和边带电磁波(ω-2(在ω上的ω2),在右箭头上的(k)-右箭头(0)上的2(k))耦合。与等离子波相关的密度扰动与右箭头(2 omega 0)上的(v)耦合,以产生驱动边带的非线性电流。边带的磁场与右箭头(2Ω0)上的(v)耦合,以在驱动等离子波的电子上施加反电动势。该过程可以在高达与激光频率ω(0)相对应的临界密度n(cr)的任何密度n(e)下进行。在电子温度Te> = 1 keV时,对于n(e)<= n(cr)/ 4,等离子体波在电子上受到强烈的Landau阻尼,并且该过程表现为在第二谐波激光下产生康普顿散射(SCS)的边带频率偏移等离子频率。在1μm的激光强度I-L大约为10(17)W cm(-2)时,SCS的不稳定性会在亚皮秒的时间范围内增长。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号