تقرير
Nonlinear symmetry breaking in electron temperature gradient driven turbulence
| العنوان: | Nonlinear symmetry breaking in electron temperature gradient driven turbulence |
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| المؤلفون: | Janhunen, Salomon, Merlo, Gabriele, Jenko, Frank, Gurchenko, Alexey, Gusakov, Evgeniy, Kiviniemi, Timo |
| سنة النشر: | 2020 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Plasma Physics, Physics - Computational Physics |
| الوصف: | Nonlinear symmetry breaking may occur in systems with two or more states whose linear dynamics displays certain symmetries, one of which is preferred nonlinearly. We have identified a regime of electron temperature gradient (ETG) instabilities in a tokamak plasma with circular concentric flux surfaces that has its largest growth rate at a finite ballooning angle, establishing a symmetry that is nonlinearly broken to favor one sign for the ballooning angle. This is the first example of nonlinear symmetry breaking in simulations of a drift instability in the absence of externally imposed flow shear or asymmetry in the plasma column. Comment: 7 pages, 7 figures, 1 table; submitted to Physics of Plasmas |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2005.14581 |
| رقم الأكسشن: | edsarx.2005.14581 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |