节点文献
对超短脉冲激光引雷产生的等离子体通道的特性分析
The Characteristic Studies on Plasma Channels in Ultra-Short Laser Pulses Triggered Lightning
【摘要】 利用隧道电离诱导闪电模型 ,对超短脉冲激光在大气中产生弱等离子体通道的电阻和阈值强度进行了分析和计算。结果显示 :强度为 1 0 14 W/cm2量级的超短脉冲激光产生的气体等离子体通道有较好的导电性 ,所需激光能量很小 ,说明在该模型下激光能量的利用效率很高。
【Abstract】 WT5”BZ]When ultra short laser pulses propagate in air, the plasma channel would be formed by the modulation of tunnel ionization. In this paper, the resistivity of the plasma channel was evaluated and analyzed. It was found that the threshold intensity to create plasma channels is about 10 14 W/cm 2. The required energy is small, so that laser beam can propagate very long distance. [WT5”HZ]
【关键词】 超短脉冲激光;
隧道电离;
激光引雷;
【Key words】 ultra short pulses laser; tunnel ionization; laser triggered lightning;
【Key words】 ultra short pulses laser; tunnel ionization; laser triggered lightning;
【基金】 国家自然科学基金委员会杰出青年基金!( 1982 5 110 ) ;国家863激光技术领域资助课题
- 【文献出处】 强激光与粒子束 ,HIGH POWER LASER & PARTICLE BEAMS , 编辑部邮箱 ,2000年05期
- 【分类号】TN249
- 【被引频次】8
- 【下载频次】263