A Simulation Model for Studying Low-Frequency Microinstabilities
A Simulation Model for Studying Low-Frequency Microinstabilities
复制标题
研究低频微观不稳定性的仿真模型
DOI：
10.1016/0021-9991(78)90086-4
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发表时间：
1978
影响因子：
4.1
通讯作者：
H. Okuda
中科院分区：
文献类型：
--
作者：
W. Lee;H. Okuda
摘要 开发了平板几何结构中的 2 1 2 维静电粒子代码，用于研究非均匀有界等离子体中的低频振荡，例如漂移波和捕获粒子的不稳定性。对电子横向运动进行了漂移近似，消除了电子陀螺频率及其倍数处的高频振荡。因此，可以使用实际质量比在合理的计算时间内研究非线性效应，例如等离子体的异常传输。给出了几个例子来检查模型的有效性和实用性，包括使用全电子动力学的例子。
Abstract A 2 1 2-dimensional electrostatic particle code in a slab geometry has been developed to study low-frequency oscillations such as drift wave and trapped particle instabilities in a nonuniform bounded plasma. A drift approximation for the electron transverse motion is made which eliminates the high-frequency oscillations at the electron gyrofrequency and its multiples. It is, therefore, possible to study the nonlinear effects such as the anomalous transport of plasmas within a reasonable computing time using a real mass ratio. Several examples are given to check the validity and usefulness of the model, including those using full electron dynamics.