Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom.
Phys Rev Lett. 2010 May 21;104(20):205004. doi: 10.1103/PhysRevLett.104.205004. Epub 2010 May 20.
A generalized Ohm's law is derived for a system composed of a background magnetohydrodynamic plasma and a lower density relativistic charged-particle distribution. The interpretation of Ohmic electric fields occurring due to force balance breaks down for such a system and instead an approach based on Maxwell's equations along with the particle flux equations is necessary. Three additional terms arise in Ohm's law and each is verified numerically.
为一个由背景磁流体动力学等离子体和低密度相对论带电粒子分布组成的系统推导出了广义欧姆定律。由于力平衡而产生的欧姆电场的解释在这样的系统中失效，因此需要基于麦克斯韦方程组和粒子通量方程的方法。欧姆定律中出现了三个额外的项，并且每个项都通过数值进行了验证。
