首页   按字顺浏览 期刊浏览 卷期浏览 Coupled tearing modes in plasmas with differential rotation
Coupled tearing modes in plasmas with differential rotation

 

作者: R. L. Dewar,   M. Persson,  

 

期刊: Physics of Fluids B: Plasma Physics  (AIP Available online 1993)
卷期: Volume 5, issue 12  

页码: 4273-4286

 

ISSN:0899-8221

 

年代: 1993

 

DOI:10.1063/1.860595

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The global asymptotic matching equations for multiple coupled resistive modes of arbitrary parity in a cylindrical plasma are derived. Three different variational principles are given for the outer region matching data, while the inner region analysis features a careful treatment of the symmetry‐breaking effect of a gradient in the equilibrium current for a zero‐&bgr; slab model. It is concluded that the usual constant‐&psgr; result remains valid and constrains the matrix matching formalism. The dispersion relation is compared with initial value calculations of a double tearing mode when there are small relative rotation velocities between the rational surfaces. In treating differential rotation within the asymptotic matching formalism, flow is ignored in the outer region and is assumed to affect the inner response solely through a Doppler shift. It is shown that the relative rotation can have a strong stabilizing effect by making all but one rational surface effectively ideal.

 

点击下载:  PDF (1762KB)



返 回