During the q-mode in TFTR, the Dα emissions decrease and the electron density, Zineff, and confinement times increase, as seen during the H-mode in other tokamaks. The interaction of surface islands with the limiter is believed to increase the carbon and electron concentration. Analysis of the deuterium recycling indicates that the recycling coefficient at the last closed flux surface decreases about 15% during the q-mode.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
- electron-density profile
- plasma-limiter interaction