Drift wave instabilities (DWI) associated with the two-fluid dynamics seems to be responsible for anomalous transport in modern day tokamaks. Ballooning instabilities tend to exchange flux tubes of different pressure, resulting in convective transport. The micro-level turbulence (drift wave) is coupled with the macro-level (ballooning mode) dynamics in fusion experiments. The co-existence of DWI and drift ballooning instabilities (DBI) is discussed in this work using a four-field plasma model. The formulation preserves both the microscopic and macroscopic dynamics of plasma. To demonstrate the coupling, a new dispersion relation is derived to analyze stability of the coupled modes in a non-uniform magnetized plasma. Linear stability of coupled drift-ballooning and drift-acoustic modes have been explored. The two-fluid effect (micro-level influence) through diamagnetic drift frequency for electrons and curvature drift frequency on unstable modes are demonstrated.

与两种流体动力学相关的漂移波不稳定性 (DWI) 似乎是现代托卡马克异常传输的原因。膨胀不稳定性往往会交换不同压力的通量管，从而导致对流传输。在聚变实验中，微观级湍流（漂移波）与宏观级（气球模式）动力学耦合。在这项工作中使用四场等离子体模型讨论了 DWI 和漂移气球不稳定性 (DBI) 的共存。该配方保留了等离子体的微观和宏观动力学。为了证明耦合，导出了一种新的色散关系来分析非均匀磁化等离子体中耦合模式的稳定性。已经探索了耦合漂移-气球和漂移-声学模式的线性稳定性。