A higher-order radial mode of helicon waves
A higher-order radial mode of helicon waves
复制标题
螺旋波的高阶径向模式
DOI：
10.1088/0963-0252/6/1/014
复制
发表时间：
1997
影响因子：
3.8
通讯作者：
T. Shoji
中科院分区：
文献类型：
--
作者：
Y. Sakawa;N. Koshikawa;T. Shoji
已针对 m = 0 螺旋波测量了波磁场轴向分量的轴向剖面。在距离天线 cm 处观察到下降，并解释为 m = 0 螺旋波的基波模式和二阶径向模式之间的差拍的结果。将测量的 的虚部（仅由波场组成）与使用均匀等离子体情况理论计算的波场进行比较。发现%的幅值由二阶模态和基模态的轴向阻尼长度产生。
The axial profile of the axial component of the wave magnetic field has been measured for m = 0 helicon waves. A dip in is observed at cm from the antenna, and is explained as a result of the beat between the fundamental and the second-order radial modes of the m = 0 helicon wave. The measured imaginary part of , which consists only of the wave field, is compared with that of the calculated wave field using the theory of the uniform plasma case. It is found that % of the amplitude arises from the second-order mode and the axial damping length of the fundamental mode .