Plasma and Fusion Research
Volume 14, 2403022 (2019)
Regular Articles
- Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
- 1)
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
- 2)
- Osaka University, Suita 565-0871, Japan
Abstract
Wave excitation and propagation by applying a low frequency wave to a high-beta plasma are simulated by a 3-dimensional hybrid model, where ions are treated as particles while electrons are regarded as fluids. It is found that excitation of the toroidal magnetic field occurs outside the separatrix and the wave attenuated significantly near the separatrix. Although the attenuation due to an ion cyclotron resonance is conceivable, no temperature rise in the resonance region is observed. The attenuation condition is given here on the basis of a linear theory, and it shows a good agreement with hybrid simulation results in terms of the attenuation position.
Keywords
high-beta, field-reversed configuration, hybrid simulation, low frequency wave, wave propagation
Full Text
References
- [1] M. Tuszewski, Nucl. Fusion 28, 2033 (1988).
- [2] H. Momota et al., Fusion Technol. 21, 2307 (1992).
- [3] N. Rostoker et al., Science 278, 1419 (1997).
- [4] H. Guo et al., Nat. Commun. 6, 6897 (2015).
- [5] M. Inomoto et al., Nucl. Fusion 48, 035013 (2008).
- [6] K. Yamanaka et al., Phys. Plasmas 7, 2755 (2000).
- [7] S. Okada et al., Nucl. Fusion 43, 1140 (2003).
- [8] J. Egedal et al., Phys. Plasmas 25, 072510 (2018).
- [9] N. Iwasawa et al., Phys. Plasmas 11, 615 (2004).
- [10] M.E. Jones et al., J. Comput. Phys. 123, 169 (1996).