Ideal internal kink stability in presence of plasma flow and neoclassical toroidal viscosity due to energetic particles
| العنوان: | Ideal internal kink stability in presence of plasma flow and neoclassical toroidal viscosity due to energetic particles |
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| المؤلفون: | Yueqiang Liu, Liang Liu, D.L. Yu, G.Q. Dong, Zhongbing Shi, Yi Liu, Guangzhou Hao, Shuo Wang, Neng Zhang |
| المصدر: | Nuclear Fusion. 61:046042 |
| بيانات النشر: | IOP Publishing, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Plasma flow, Viscosity, Toroid, Ideal (set theory), Physics::Plasma Physics, Computer Science::Information Retrieval, Mechanics, Condensed Matter Physics, Stability (probability) |
| الوصف: | The influence of energetic particles (EPs) on the ideal internal kink mode, in rotating tokamak plasmas, is numerically investigated by simultaneously solving MHD-kinetic hybrid equations together with a toroidal momentum balance equation utilizing the MARS-Q code (Liu et al 2013 Phys. Plasmas 20 042503). The neoclassical toroidal viscous (NTV) torque, induced by precessional drift resonances of trapped energetic particles, acts as the momentum sink term to damp the plasma flow. Quasi-linear initial value simulations show local reduction of the flow amplitude and enhancement of the flow shear near the q = 1 rational surface (q is the safety factor) due to EP induced NTV. Both effects in turn destabilize the internal kink mode. These numerical findings are robust against the initial linear stability of internal kink, the initial plasma flow profile, as well as the equilibrium distribution model for EPs. |
| تدمد: | 1741-4326 0029-5515 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ba32680e369c8dd94654b48f4131ed24 https://doi.org/10.1088/1741-4326/abe8b0 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........ba32680e369c8dd94654b48f4131ed24 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17414326 00295515 |
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