Effects of polarization reversal on localized-absorption characteristics of electron cyclotron wave in bounded plasmas
- Department of Electronic Engineering, Tohoku University, Sendai 980-8579 (Japan)
Propagation and absorption of electron cyclotron wave are investigated for the case in which a left-hand polarized wave (LHPW) is selectively launched in inhomogeneously magnetized and bounded plasmas. The LHPW is observed to be unexpectedly and sharply absorbed near the electron cyclotron resonance point. The unexpected absorption of the LHPW is clarified to be caused by a polarization reversal from the LHPW to a right-hand polarized wave. It is found that the polarization reversal point dominates the absorption region of the electron cyclotron wave, which is observed to be changed by controlling the plasma radius, i.e., radial boundary condition. These phenomena can be well explained in terms of the dispersion relation in bounded plasmas.
- OSTI ID:
- 20702234
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 12; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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