论文标题
用于电磁粒子模拟Alfvén波和能量粒子物理学的电磁粒子模拟的开发
The development of an implicit full f method for electromagnetic particle simulations of Alfvén waves and energetic particle physics
论文作者
论文摘要
在这项工作中，开发了用于粒子中/傅立叶电磁模拟的隐式方案，并应用于一维和三维Tokamak等离子体中Alfvén波的研究。引入了分析处理，以实现隐式现场粒子系统的迭代溶液的有效收敛。首先，其应用于一维均匀等离子体，在$β/m_e $值的广泛范围内证明了其适用性。其次，使用国际Tokamak物理学活动（ITPA）能量粒子（EP）主题组的广泛研究的病例，在三维轴对称Tokamak等离子体中模拟了环形性诱导的Alfvén本特征模（TAE）。 TAE的实际频率和增长速率（或不带EP）与先前的结果一致。这项工作中建立的完整F电磁粒子方案为EP传输研究提供了一种自然选择，其中需要在动力学模拟中处理大型变化和任意粒子分布函数。
In this work, an implicit scheme for particle-in-cell/Fourier electromagnetic simulations is developed and applied to studies of Alfvén waves in one dimension and three-dimensional tokamak plasmas. An analytical treatment is introduced to achieve efficient convergence of the iterative solution of the implicit field-particle system. First, its application to the one-dimensional uniform plasma demonstrates its applicability in a broad range of $β/m_e$ values. Second, toroidicity induced Alfvén eigenmodes (TAE) are simulated in a three-dimensional axisymmetric tokamak plasma, using the widely studied case defined by the International Tokamak Physics Activity (ITPA) Energetic Particle (EP) Topical Group. The real frequency and the growth (or damping) rate of the TAE with (or without) EPs agree with previous results reasonably well. The full f electromagnetic particle scheme established in this work provides a possible natural choice for EP transport studies where large profile variation and arbitrary particle distribution functions need to be treated in kinetic simulations.
