Formation of plasma duct by high power microwave

We have experimentally investigated "DARC （DC to AC radiation converter）"using 4参数D20参数D2 light of Nd ： YAG laser with a pulse duration of ~ 6 ns。电磁波产生在静态电场和相对论电离前沿之间的相互作用实验中观察到。发射微波脉冲的频率（~ 6纳秒）范围从9.5 GHz到14.1 GHz。输出信号强度是直流偏置电压的一种可能性，其功率为2.3。发射的辐射场在静态电场方向上被极化。发射辐射的脉冲持续时间就像电离激光器一样长。这一指标表明，脉冲持续时间很大程度上取决于激光光的电离过程。

We have experimentally investigated "DARC (DC to AC radiation converter)"using 4ωィイD20ィエD2 light of Nd : YAG laser with a pulse duration of 〜 6ns. Electromagnetic wave generation has been observed in the interaction experiments between a static electric field and a relativistic ionization front. The frequency of the emitted microwave pulse (〜 6ns) ranges from 9.5 GHz to 14.1 GHz. The output signal intensity is proportional to the DC bias voltages with a power of 2.3. The emitted radiation field is polarized along the static electric field direction. The pulse duration of the emitted radiation is as long as that of the ionizing laser. This indicates that the pulse duration strongly depends on the ionizing process by the laser light.