Two-fluid flowing equilibria of compact plasmas
Two-fluid flowing equilibria of compact plasmas
复制标题
致密等离子体的二流体流动平衡
DOI：
10.1063/1.1388034
复制
发表时间：
2001
影响因子：
2.2
通讯作者：
A. Ishida
中科院分区：
文献类型：
--
作者：
L. Steinhauer;H. Yamada;A. Ishida
探讨了双流体流动平衡的性质。这是促进限制注意紧凑的环形在一个“稳定的能量”状态与均匀的密度。流动平衡被发现分为两类，力自由和非力自由，指的是一个j×B力的存在或不存在。无力类可能具有显著的流动。Spheromak在这个类中。非无力类是抗磁性的，并具有阿尔文极向流。场反向配置（FRC）属于这一类。这两个类都允许任意大的均衡。这两类都占据了“螺旋度空间”中某些“允许”的区域，“螺旋度空间”是一个以电子和离子螺旋度为坐标的二维参数图。两类的允许区域重叠;在重叠区域中，非力自由类在能量上是有利的。这揭示了在实验中观察到的FRC spheromak分叉。二维分析平衡也发现，跨越这两个类。这些可能起到类似的作用。
The properties of two-fluid flowing equilibria are explored. This is facilitated by limiting attention to compact toroids in a “stationary-energy” state with uniform density. Flowing equilibria are found to fall into two classes, force-free and non-force-free, referring to the absence or presence of a j×B force. The force-free class may have significant flows. Spheromaks are in this class. The non-force-free class is diamagnetic and has Alfvenic poloidal flows. Field reversed configurations (FRCs) are in this class. Both classes admit arbitrarily large equilibria. Both classes occupy certain “allowed” regions in “helicity space,” a two-dimensional parameter map with the electron and ion helicities as coordinates. Allowed regions for the two classes overlap; in the overlap region the non-force-free class is energetically favorable. This sheds light on the FRC-spheromak bifurcation observed in experiments. Two-dimensional analytic equilibria are also found that span both classes. These may play a role simil...
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