The parallel work is still in the developmental stages. Production calculations have enabled us to investigate the effects of impurities and externally imposed poloidal flows on ion temperature gradient driven turbulence. Both of these additions to the standard description of ion temperature gradient driven instabilities have a stabilizing influence on the growth rates, and lead to a reduction of the saturation level and of the heat flux. We are interested in the application to free liquid walls in fusion reactors as a possible new paradigm for plasma containment structures. It also provides a more relevant description of the physics of ion temperature gradient driven modes, since trapped electrons are known to enhance the growth rate of the underlying instability.
Localized flow suppresses fluctuations where flow shear is largest.