一种等离子体湍流实验数据分析程序的设计与应用

Design and application of a data analysis code for plasma turbulence

针对磁约束聚变等离子体边缘湍流中非线性能量传递过程的问题,开发了数据分析程序。该程序基于数字谱分析技术来求解波耦合方程,进而计算与三波相互作用相关联的线性和非线性耦合系数以及能量转移。介绍了算法设计和程序开发的主要思想,并对程序进行了仿真测试。然后应用该程序分析了反场箍缩装置实验的一次放电实验数据,观察到湍流之间的波耦合和能量级联现象,发现或证实了聚变等离子体湍流激发与增长的一种内在机制。

An analyzing method to deal with turbulence data is proposed. Based on this method, a turbulence data analysis code is developed whose function is to study the energy transfer in plasma turbulence. The algorithm is introduced and the code test is made. The code was used to investigate the turbulence data from a Reversed-field-pinch（RFP） experiment and then the intrinsic excitation and increment mechanisms of the edge turbulence of magnetic controlled fusion plasmas are revealed.