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On the mutual effect of ion temperature gradient instabilities and impurity peaking in the reversed field pinch

Research paper by I. Predebon, L. Carraro, C. Angioni

Indexed on: 21 Oct '11Published on: 21 Oct '11Published in: Physics - Plasma Physics



Abstract

The presence of impurities is considered in gyrokinetic calculations of ion temperature gradient (ITG) instabilities and turbulence in the reversed field pinch device RFX-mod. This device usually exhibits hollow Carbon/Oxygen profiles, peaked in the outer core region. We describe the role of the impurities in ITG mode destabilization, and analyze whether ITG turbulence is compatible with their experimental gradients.