非均匀等离子体湍流分支与热力学分支的随机过渡
Stochastic Transition between Turbulent Branch and Thermodynamic Branch of an Inhomogeneous Plasma
摘要：
用统计理论分析了亚边缘湍流等离子体中热力学分支与湍流分支之间的过渡现象。通过数值模拟具有亚边缘特征的朗之万方程，得到了湍流脉动的时间发展。分析了两种状态之间的概率密度函数和跃迁率。从亚临界分岔点到线性稳定边界之间的几乎整个区域都发生了从湍流分支到热力学分支的转变。
英文摘要：
Transition phenomena between thermodynamic branch and turbulent branch in submarginal turbulent plasma are analyzed with statistical theory. Time-development of turbulent fluctuation is obtained by numerical simulations of Langevin equation which contains submarginal characteristics. Probability density functions and transition rates between two states are analyzed. Transition from turbulent branch to thermodynamic branch occurs in almost entire region between subcritical bifurcation point and linear stability boundary.
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