A higher-order radial mode of helicon waves
Authors:
- 1 February 1997
- journal article
- Published by IOP Publishing in Plasma Sources Science and Technology
- Vol. 6 (1) , 96-100
Abstract
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 .Keywords
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