We have investigated experimentally the effect of ECRH heating on impurity transport by injecting Mo in full LHCD FTU plasmas. The experiments show that there is no accumulation of the Mo for PECRH≤ 400 kW, where the injected impurity outflows on a time scale of the order of the energy confinement-time. By increasing the coupled ECRH power up to 800 kW we find that a strong inward pinch develops in the central region (r≤5 cm) which brings to the accumulation of the Mo as seen by the central SXR line of sight, while the inward pinch in the region outside the peak of the ECRH power-deposition- profile (r=10 cm) is reduced.
|Publication status||Published - 2006|
|Event||33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006 - , Italy|
Duration: 1 Jan 2006 → …
|Conference||33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006|
|Period||1/1/06 → …|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
Romanelli, M., Leigheb, M., Gabellieri, L., Carraro, L., Puiatti, M. E., Valisa, M., ... Sozzi, C. (2006). Investigation of turbulent transport of heavy impurities in FTU electron heated plasmas. Paper presented at 33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006, Italy.