高功率激光装置电磁环境研究进展

Development of electromagnetic environment research of high power laser facility

摘要:

激光惯性约束聚变研究中，高功率激光器靶室中强激光-靶物质作用产生的高能电子的运动、X射线与周围物质作用产生的置换电流将激励出强电磁脉冲，场强幅值高达几万V/m，频率达GHz量级，能库等工作区域大电流、大电压的快速变化过程也将辐射电磁场，这些电磁脉冲对电子设备将产生各种电磁耦合效应，影响控制时序、测量数据的准确性，严重的甚至使仪器设备毁坏，这种电磁脉冲对生物组织具有损伤效应。本文详细介绍了国内外高功率激光装置电磁环境的理论与实验研究进展情况。

Abstract:

Laser Inertial Confinement Fusion(LICF) is one of the research hotspots today and has played an important role in the study of clean energy, military and astrophysics. In the high power laser-target matter interaction process within the high power laser facility, the movement of hot electron can excite high power electromagnetic(EM) pulses with electric field amplitude up to 10 000 V/m and frequency of GHz level. The electromagnetic pulses couple to surrounding electronic equipment and affect the accuracy of the measured data, even more destroy the electronic equipment. In addition, it has damage effect on biological tissues. The research trends of the EM environment in high power laser facility at home and abroad are introduced in this paper.