Zピンチプラズマにおける自己組織化現象と散逸構造

概要

論文の詳細を見る
An attractor of the dissipative structure for magnetic fields in Z-pinch plasmas is derived from the self-organization theory by Kondoh [Phys. Rev. E 48, 2975 (1993), Phys. Rev. E 49, 5564 (1994)]. It is demonstrated by axisymmetric two dimensional (2-D) magnetohydrodynamic (MHD) simulations with use of a 3-D MHD code that after axisymmetric sausage type instabibities the profile of magnetic fields in the Z-pinch plasmas converses to the J_1 Bessel function profile of the theoretically predicted attractor for both of two initial conditions of uniform and J_0 Bessel function current profiles. Using a spectrum analysis by eigenfunctions of the dissipative dynamical operator, it is shown that there appear spectrum transfers towards both the higher and the lower eigenmodes, i.e. the normal and the inverse energy cascades, during the self-organization process in the axisymmetric 2-D MHD simulations of Z-pinch plasmas.
1995-05-25