Multiple branches of resistive wall mode instability in a resistive plasma
Abstract
We observe that the resistive wall mode (RWM) instability is numerically investigated for a toroidal resistive plasma, with results compared to those of an analytic cylindrical model. The full toroidal code MARS-F [Liu et al., Phys. Plasmas 7, 3681 (2000)] is applied for a computational study. The results indicate that there are two branches of unstable RWMs, when the toroidal favorable average curvature effect (the GGJ effect) is taken into account in the resistive layer. In addition, the GGJ physics not only directly affects the mode growth rate, but also indirectly modifies the mode stability by changing the continuum damping through modifying the mode frequency in the plasma frame. Furthermore, the plasma resistivity can either stabilize or destabilize the RWM, depending on the regime of key plasma parameters (e.g., the plasma rotation). Similarly, the plasma rotation can stabilize or destabilize the RWM, depending on the plasma resistivity. These numerical results from MARS-F are qualitatively confirmed by an analytic theory model which includes the GGJ effect.
- Authors:
-
[1];
- Dalian Univ. of Technology, Dalian (China). School of Physics, Key Lab. of Materials Modification by Beams of the Ministry of Education
- General Atomics, San Diego, CA (United States); Southwestern Inst. of Physics,Chengdu (China)
- Southwestern Inst. of Physics,Chengdu (China); Univ. of California, Irvine, CA (United States)
- Southwestern Inst. of Physics,Chengdu (China)
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1540134
- Grant/Contract Number:
- FC02-04ER54698; FG02-95ER54309
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Physics
Citation Formats
Yang, S. X., Liu, Y. Q., Hao, G. Z., Wang, Z. X., He, Y. L., He, H. D., Wang, A. K., and Xu, M. Multiple branches of resistive wall mode instability in a resistive plasma. United States: N. p., 2018.
Web. doi:10.1063/1.5007819.
Yang, S. X., Liu, Y. Q., Hao, G. Z., Wang, Z. X., He, Y. L., He, H. D., Wang, A. K., & Xu, M. Multiple branches of resistive wall mode instability in a resistive plasma. United States. https://doi.org/10.1063/1.5007819
Yang, S. X., Liu, Y. Q., Hao, G. Z., Wang, Z. X., He, Y. L., He, H. D., Wang, A. K., and Xu, M. Wed .
"Multiple branches of resistive wall mode instability in a resistive plasma". United States. https://doi.org/10.1063/1.5007819. https://www.osti.gov/servlets/purl/1540134.
@article{osti_1540134,
title = {Multiple branches of resistive wall mode instability in a resistive plasma},
author = {Yang, S. X. and Liu, Y. Q. and Hao, G. Z. and Wang, Z. X. and He, Y. L. and He, H. D. and Wang, A. K. and Xu, M.},
abstractNote = {We observe that the resistive wall mode (RWM) instability is numerically investigated for a toroidal resistive plasma, with results compared to those of an analytic cylindrical model. The full toroidal code MARS-F [Liu et al., Phys. Plasmas 7, 3681 (2000)] is applied for a computational study. The results indicate that there are two branches of unstable RWMs, when the toroidal favorable average curvature effect (the GGJ effect) is taken into account in the resistive layer. In addition, the GGJ physics not only directly affects the mode growth rate, but also indirectly modifies the mode stability by changing the continuum damping through modifying the mode frequency in the plasma frame. Furthermore, the plasma resistivity can either stabilize or destabilize the RWM, depending on the regime of key plasma parameters (e.g., the plasma rotation). Similarly, the plasma rotation can stabilize or destabilize the RWM, depending on the plasma resistivity. These numerical results from MARS-F are qualitatively confirmed by an analytic theory model which includes the GGJ effect.},
doi = {10.1063/1.5007819},
journal = {Physics of Plasmas},
number = 1,
volume = 25,
place = {United States},
year = {Wed Jan 31 00:00:00 EST 2018},
month = {Wed Jan 31 00:00:00 EST 2018}
}
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