Self-organized dynamics and thermal instability in steady state tokamaks
Self-organized dynamics and thermal instability in steady state tokamaks
复制标题
稳态托卡马克的自组织动力学和热不稳定性
DOI：
10.1088/0029-5515/35/12/i31
复制
发表时间：
1995
期刊：
影响因子：
3.3
通讯作者：
K. Itoh
中科院分区：
文献类型：
--
作者：
A. Fukuyama;S. Itoh;M. Yagi;K. Itoh
采用一致的数值模拟方法，研究了自举电流和外部驱动共同作用下，改进芯约束条件下稳态等离子体的动力学行为。研究了压力、电流和导热系数分布之间的一种新的非线性联系。由于约束增强因子的变化，预测了等离子体压力和电流的自组织振荡(即时空极限环振荡)。在α粒子加热存在的情况下，等离子体参数的时间变化引起α加热功率的变化。这为燃烧等离子体的热不稳定性提供了一幅新的图景。
A consistent numerical simulation is performed to study the dynamics in a steady state plasma with improved core confinement which is sustained by a bootstrap current and external drive. A new non-linear link between the profiles of the pressure, current and thermal conductivity is investigated. A self-organized oscillation (i.e. Spatiotemporal limit cycle oscillation) of the plasma pressure and current, coupled by the variation of the confinement enhancement factor, is predicted to occur. In the presence of alpha particle heating, the time variation of the plasma parameters causes a change in the alpha heating power. This provides a new picture of the thermal instability in burning plasmas
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox