تقرير
Thermal fluid closures and pressure anisotropies in numerical simulations of plasma wakefield acceleration
| العنوان: | Thermal fluid closures and pressure anisotropies in numerical simulations of plasma wakefield acceleration |
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| المؤلفون: | Simeoni, Daniele, Rossi, Andrea Renato, Parise, Gianmarco, Guglietta, Fabio, Sbragaglia, Mauro |
| المصدر: | Phys. Plasmas 31, 093103 (2024) |
| سنة النشر: | 2024 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Plasma Physics, Physics - Accelerator Physics, Physics - Computational Physics |
| الوصف: | We investigate the dynamics of plasma-based acceleration processes with collisionless particle dynamics and non negligible thermal effects. We aim at assessing the applicability of fluid-like models, obtained by suitable closure assumptions applied to the relativistic kinetic equations, thus not suffering of statistical noise, even in presence of a finite temperature. The work here presented focuses on the characterization of pressure anisotropies, which crucially depend on the adopted closure scheme, and hence are useful to discern the appropriate thermal fluid model. To this aim, simulation results of spatially resolved fluid models with different thermal closure assumptions are compared with the results of particle-in-cell (PIC) simulations at changing temperature and amplitude of plasma oscillations. Comment: The following article has been submitted to Physics of Plasma |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/5.0216707 |
| URL الوصول: | http://arxiv.org/abs/2404.19635 |
| رقم الأكسشن: | edsarx.2404.19635 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/5.0216707 |
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