新型二维发散波电磁粒子速度计的设计初探

摘要

To study the electromagnetic test technique for the two-dimension particle velocity under divergent waves, a novel two-dimension electromagnetic particle velocity gauge configuration is designed based on the magnetic characteristic of Helmholtz coil under a pulse current. Its performance is verified through a com- parison of the electromagnetic measurement between one-dimension and two-dimension particle velocities in PMMA. The experiment shows that it is efficient for the propagation measurement of divergent waves in an inhomogeneous medium even with interfaces, grooves and joints.%为探索发散波作用下粒子速度二维电磁测试方法，研究了脉冲电流作用下Helmholtz线圈磁场特性，设计了新型二维发散波电磁粒子速度计构型．通过有机玻璃试验样品中粒子速度的一维和二维电磁测试对比实验，表明新型二维发散波电磁粒子速度计可以为具有分界面、沟槽或节理的非均匀分层介质中的发散波传播规律研究提供有效的测试手段．