Hye Lin Kang, Young Dae Yoon, Myeonghun Cho, Gunsu S. Yun
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引用次数: 0
摘要
采用简化的系统模型,通过二维粒子在胞(PIC)模拟研究了失控电子(RE)束与反应堆级背景等离子体之间的共振相互作用。我们跟踪了两种不同初始束流能量(1 和 10 MeV)下电子动量分布函数的时间演变,揭示了等离子体波的增长与 RE 束流内的俯仰角散射或动量分布扩散同时发生。值得注意的是,我们发现并确认了主导共振条件对 RE 射束初始动能的依赖性。此外,我们还通过评估失控电子分布函数的平均动能通量,量化了粒子-波相互作用对 RE 动量分布扩散的影响。
Fast nonlinear scattering of runaway electron beams through resonant interactions with plasma waves
The resonant interaction between a runaway electron (RE) beam and a background reactor-grade background plasma is investigated through two-dimensional particle-in-cell (PIC) simulations, employing a simplified model of the system. The temporal evolutions of the electron momentum distribution function for two separate initial beam energies (1 and 10 MeV) are tracked, revealing the occurrence of plasma wave growth concomitant with pitch angle scattering or momentum distribution diffusion within the RE beam. Notably, we identify and confirm the dependence of the dominant resonance condition on the initial kinetic energy of the RE beam. Furthermore, we quantify the effect of particle-wave interactions on the RE momentum distribution diffusion by assessing the average kinetic energy flux from the runaway electron distribution function.
期刊介绍:
Nuclear Fusion publishes articles making significant advances to the field of controlled thermonuclear fusion. The journal scope includes:
-the production, heating and confinement of high temperature plasmas;
-the physical properties of such plasmas;
-the experimental or theoretical methods of exploring or explaining them;
-fusion reactor physics;
-reactor concepts; and
-fusion technologies.
The journal has a dedicated Associate Editor for inertial confinement fusion.