Structure-driven nonlinear instability of double tearing modes and the abrupt growth after long-time-scale evolution.
Phys Rev Lett
; 89(20): 205002, 2002 Nov 11.
Article
en En
| MEDLINE
| ID: mdl-12443483
ABSTRACT
The new nonlinear destabilization process is found in the nonlinear phase of the double tearing mode (DTM). This process causes the abrupt growth of DTM and subsequent collapse after long-time-scale evolution in the Rutherford-type regime. The nonlinear growth of the DTM is triggered when the triangular deformation of magnetic islands with sharp current point at the X point exceeds a certain value. Hence, the mode can be called the structure-driven one. Decreasing the resistivity increases the sharpness of the triangularity and the spontaneous growth rate in the abrupt-growth phase is almost independent of the resistivity.
Buscar en Google
Bases de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2002
Tipo del documento:
Article
País de afiliación:
Japón