Author/Authors :
Corre، نويسنده , , Y. and Giannella، نويسنده , , R. and De Michelis، نويسنده , , C. and Guirlet، نويسنده , , R. and Azéroual، نويسنده , , A. and Chareyre، نويسنده , , E. and Costanzo، نويسنده , , L. and Escarguel، نويسنده , , A. Diane Gauthier، نويسنده , , E. and Ghendrih، نويسنده , , P. and Gunn، نويسنده , , J. and Hogan، نويسنده , , J. and Monier-Garbet، نويسنده , , P. and Pégourié، نويسنده , , B. and Pospieszczyk، نويسنده , , A. a، نويسنده ,
Abstract :
A recent extensive experimental study of impurity production and penetration for various density regimes is described. Deuterium and carbon emissions near a neutraliser plate (NP) of the Tore Supra Ergodic Divertor (ED) has been measured with an absolutely calibrated visible endoscope, for high- and low-density plasma regimes. From these radiation measurements, we have deduced an effective carbon flux, and at an order-of-magnitude estimate of the NP erosion: 50 m for the fall 1999 experimental ED campaign (≈500 shots). Combining the measured carbon and deuterium fluxes, we deduce a global experimental carbon sputtering yield for the NP in the range 2×10−2–3×10−1 for ohmic pulses, showing evidence of the importance of carbon self-sputtering.
