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A ballooning mode equation is derived from a modified energy principle that results from the treatment of the hot electrons as a noninteracting species. Consequently, the pressure gradient term that drives ballooning instabilities contains only contributions from the thermal species, modified by effects of pressure anisotropy. The magnetic field line bending stabilisation is unaltered by the hot particles or the anisotropy. The equation that is derived is appropriate to model plasma confinement configurations with magnetic shear, such as the ELMO Snakey Torus.

Additional information

Authors: COOPER W A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH);DEPASSIER M C, Pontificia Universidad Católica de Chile, Facultad de Física, Santiago (CL)
Bibliographic Reference: Paper presented: 7th Chilean Symposium of Physics, Santiago (CL), Dec. 17-21, 1990
Availability: Available from (1) as Paper ES 35881 ORA
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