Contraction of laser-generated plasma channels under ambient electric fields

被引：1

作者：

Borisov, MF ^{[1
]}

Gromovenko, VM ^{[1
]}

Lapshin, VA ^{[1
]}

Rezunkov, YA ^{[1
]}

机构：

[1] Res Inst Complex Testing Opt Elect Devices, Sosnovy Bor 188540, Leningrad Reg, Russia

来源：

HIGH-POWER LASERS IN ENERGY ENGINEERING | 2000年 / 3886卷

关键词：

electric field strength; leader progression; plasma conductivity; laser-sustained mode; combined laser pulses;

D O I：

10.1117/12.375108

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To define more precisely the requirements to electric-physical parameters of laser-generated plasma channel needed to trigger a lightning, the analysis of the experimental data on laser-guided long gap discharges is used. The analysis is based on the developed theoretical model of the channel interaction with thunderstorm electrical fields. Two modes of leader progression form a tip of the channel are considered. The obtained data allows determining the principal conversion conditions of the channel into a leader channel. To maintain the plasma channel conductivity during the modes, two laser pulses is supposed to be used. The suggestion was tested experimentally by the use of CO2 and Nd laser.

引用

页码：175 / 184

页数：10