Spiral Structures in Magnetized Rotating Plasmas

A theory of spiral structure formation has been formulated to show that spiral structures are rather basic entities in magnetized rotating plasmas subjected to various kind of instabilities such as collisional drift wave instability, flute mode instability due to centrifugal force, and Kelvin-Hehnhotz instability. The characteristic features of spiral structures observed experimentally in ECR plasmas are reproduced by our theory. 52. $30\mathrm{q}, $ $52.35\mathrm{k}\mathrm{t}, $ $52.35\mathrm{P}\mathrm{y}$ 1152 2000 91-105 91 Self-organized structures in magnetized plasmas have been a topic since they may give a deep insight into self-organization in complex systems as well as transport phenomena in plasmas. Coherent structures have been recently observed in laboratories [1-6] and are subjects of theoretical analysis for understanding underlying physics [7]. In both ECR plasmas [4] and gun-produced plasmas [5], two-arms spirals are commonly observed, and in particular the spiral structure observed in the ECR plasmas have interesting features: (1