Stabilizing effects of enhanced resistivity due to lithium-conditioning on low-n edge localized modes in NSTX
Abstract
The stabilizing effects of enhanced edge resistivity on edge-localized instabilities in high confinement discharges due to lithium-conditioning in the National Spherical Torus Experiment are identified for the first time. Linear stability analysis of the experimentally constrained equilibrium suggests that the change in the equilibrium plasma density and pressure profiles alone due to lithium-conditioning may be insufficient for a complete suppression of low toroidal mode number peeling-ballooning modes. In conclusion, the enhanced resistivity due to the increased effective electric charge number Zeff after lithium-conditioning provides additional stabilization of the edge localized modes. Notably, this stabilizing effect by enhanced edge resistivity becomes evident only in two-fluid magnetohydrodynamic simulations.
- Authors:
-
- Univ. of Science and Technology of China, Anhui (China)
- Univ. of Science and Technology of China, Anhui (China); Univ. of Wisconsin-Madison, Madison, WI (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States); Princeton Univ., NJ (United States); Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1543833
- Alternate Identifier(s):
- OSTI ID: 1361843
- Grant/Contract Number:
- AC02-05CH11231; AC02-09CH11466; FC02-08ER54975; FG02-86ER53218
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 5; 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
Banerjee, Debabrata, Zhu, Ping, and Maingi, Rajesh. Stabilizing effects of enhanced resistivity due to lithium-conditioning on low-n edge localized modes in NSTX. United States: N. p., 2017.
Web. doi:10.1063/1.4981931.
Banerjee, Debabrata, Zhu, Ping, & Maingi, Rajesh. Stabilizing effects of enhanced resistivity due to lithium-conditioning on low-n edge localized modes in NSTX. United States. https://doi.org/10.1063/1.4981931
Banerjee, Debabrata, Zhu, Ping, and Maingi, Rajesh. Mon .
"Stabilizing effects of enhanced resistivity due to lithium-conditioning on low-n edge localized modes in NSTX". United States. https://doi.org/10.1063/1.4981931. https://www.osti.gov/servlets/purl/1543833.
@article{osti_1543833,
title = {Stabilizing effects of enhanced resistivity due to lithium-conditioning on low-n edge localized modes in NSTX},
author = {Banerjee, Debabrata and Zhu, Ping and Maingi, Rajesh},
abstractNote = {The stabilizing effects of enhanced edge resistivity on edge-localized instabilities in high confinement discharges due to lithium-conditioning in the National Spherical Torus Experiment are identified for the first time. Linear stability analysis of the experimentally constrained equilibrium suggests that the change in the equilibrium plasma density and pressure profiles alone due to lithium-conditioning may be insufficient for a complete suppression of low toroidal mode number peeling-ballooning modes. In conclusion, the enhanced resistivity due to the increased effective electric charge number Zeff after lithium-conditioning provides additional stabilization of the edge localized modes. Notably, this stabilizing effect by enhanced edge resistivity becomes evident only in two-fluid magnetohydrodynamic simulations.},
doi = {10.1063/1.4981931},
journal = {Physics of Plasmas},
number = 5,
volume = 24,
place = {United States},
year = {Mon Apr 24 00:00:00 EDT 2017},
month = {Mon Apr 24 00:00:00 EDT 2017}
}
Web of Science
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