Abstract
We report results of a study to evaluate the efficacy of various impurities for heat dispersal by a radiative mantle and radiative divertor (including SOL). We have derived a stability criterion for the mantle radiation which favors low Z impurities and low ratios of edge to core thermal conductivities. Since on the other hand the relative strength of boundary line radiation to core bremsstrahlung favors high Z impurities, we find that for the ITER physics phase argon is the best gaseous impurity for mantle radiation. For the engineering phase of ITER, more detailed analysis is needed to select between krypton and argon.
| Original language | English |
|---|---|
| Pages (from-to) | 305-309 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 241-243 |
| DOIs | |
| State | Published - Feb 2 1997 |
| Externally published | Yes |
| Event | Proceedings of the 1996 12th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Saint-Raphael, Fr Duration: May 20 1996 → May 24 1996 |
Funding
Work supported by the U.S. Department of Energy under Contract Nos. DE-AC03-89ER51114 and W-7405-ENG-48.