Transport and deceleration of fusion products in microturbulence
Transport and deceleration of fusion products in microturbulence
复制标题
微湍流中聚变产物的输运和减速
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
W. Dorland
中科院分区：
文献类型：
--
作者：
G. Wilkie;I. Abel;M. Landreman;W. Dorland
聚变装置中产生的α粒子的速度空间分布在中等能量下由于湍流传输而受到修改。因此，必须计算其函数形式先验未知的平衡分布的演化。使用一种新的技术，适用于任何痕量杂质，我们已经取得了这种计算完全非线性陀螺动力学模拟不仅可能，而且特别有效。我们证明了一个微扰引起的偏离当地的减速分布，反演的能量分布，并在ITER的情况下的α加热和压力分布的相关修改。
The velocity-space distribution of alpha particles born in fusion devices is subject to modification at moderate energies due to turbulent transport. Therefore, one must calculate the evolution of an equilibrium distribution whose functional form is not known a priori. Using a novel technique, applicable to any trace impurity, we have made this calculation for fully nonlinear gyrokinetic simulations not only possible but also particularly efficient. We demonstrate a microturbulence-induced departure from the local slowing-down distribution, an inversion of the energy distribution, and associated modifications to the alpha heating and pressure profiles in an ITER-like scenario.