The equilibrium of a field reversed configuration (FRC) with a rotating magnetic field (RMF) applied externally for maintaining steady state is studied theoretically. The momentum balance equations of ions and electrons as well as the mass balance equations have been solved analytically and a solution of a steady equilibrium of the FRC with the RMF, in which the ions and electrons rotate at different velocities, has been found. It has been revealed that the particle source and the radial flow neglected in previous studies plays an important role in the equilibrium
磁場反転配位（FRC）に外部から回転磁場（RMF）を印加して定常状態を維持する場合の平衡状態を理論的に研究した。イオンと電子の運動量バランス方程式および質量バランス方程式を解析的に解き、イオンと電子が異なる速度で回転するFRCとRMFの定常平衡解を得た。従来の研究で無視されていた粒子源と動径方向の流れが、平衡状態において重要な役割を果たすことが明らかになった。