Drift waves in a straight stellarator
Drift waves in a straight stellarator
复制标题
直仿星器中的漂移波
DOI：
10.1063/1.864229
复制
发表时间：
1983
影响因子：
4.6
通讯作者：
D. Ross
中科院分区：
文献类型：
--
作者：
A. Bhattacharjee;J. Sedlak;P. Similon;M. Rosenbluth;D. Ross
利用气胀模形式研究了直仿星器中漂移波的本征模结构。假定电子是绝热的，而离子则构成一种冷的磁化流体。“有效势”有一个整体的抛物线包络线，但被沿b的螺旋波纹强烈调制。发现了两类解：那些在局部螺旋井中强局部化的解，以及那些弱局部化且具有广泛空间范围的解。弱局域模式的空间衰减是由于特征函数周期和“有效势”调制之间存在马修共振。
The eigenmode structure of drift waves in a straight stellarator using the ballooning mode formalism is investigated. The electrons are assumed to be adiabatic and the ions constitute a cold, magnetized fluid. The ‘‘effective potential’’ has an overall parabolic envelope but is modulated strongly by helical ripples along B. Two classes of solutions are found: those that are strongly localized in local helical wells, and those that are weakly localized and have broad spatial extent. The weakly localized modes decay spatially due to the existence of Mathieu resonances between the periods of the eigenfunction and the modulation of the ‘‘effective potential.’’