Impurity effects on ion-drift-wave eigenmodes in a sheared magnetic field
The stability of ion-drift-wave eigenmodes in a slab geometry with a sheared magnetic field is investigated. It is found that in contrast to the case of universal and dissipative electron drift wave eigenmodes, unstable impurity-driven normal modes can appear if specific conditions are satisfied. In addition, the influence of impurities on unstable ion-temperature-gradient-driven drift eigenmodes is also studied. It is found that, if their density profile is inwardly peaked, the impurities can exert a strong stabilizing influence on these modes.
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 6029152
- Report Number(s):
- PPPL-1541
- Country of Publication:
- United States
- Language:
- English
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