تقرير
The available energy of trapped electrons and its relation to turbulent transport
| العنوان: | The available energy of trapped electrons and its relation to turbulent transport |
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| المؤلفون: | Mackenbach, R. J. J., Proll, J. H. E., Helander, P. |
| سنة النشر: | 2021 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Plasma Physics |
| الوصف: | A collisionless plasma possesses a certain amount of "available energy", which is that part of the thermal energy that can be converted into field energy. Here, a calculation is presented of the available energy carried by trapped electrons in a slender non-omnigenous flux tube of plasma. This quantity is compared with gyrokinetic simulations of the nonlinear saturated radial energy flux resulting from turbulence driven by collisionless trapped-electron modes in various stellarator and a tokamak. The numerical calculation of available energy is extremely fast and shows a strong correlation with the turbulent energy fluxes found in the gyrokinetic simulations. Indeed, the energy flux is found to be proportional to the available energy to the power of approximately 3/2, as one would expect from a simple phenomenological model. Comment: 5 pages, 1 figure |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.128.175001 |
| URL الوصول: | http://arxiv.org/abs/2109.01042 |
| رقم الأكسشن: | edsarx.2109.01042 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.128.175001 |
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