Portal de Periódicos da CAPES

Change of Transport at L- and H-Mode Transition

1990; Physical Society of Japan; Volume: 59; Issue: 11 Linguagem: Inglês

10.1143/jpsj.59.3815

1347-4073

Sanae-Inoue Itoh, K. Itoh,

Laser-Plasma Interactions and Diagnostics

A new refined model of the L-mode and H-mode transition in tokamaks is presented based on the bifurcation of the radial electric field, E r , near the edge. The radial gradient of E r is newly introduced to explain the sudden change of fluctuations as well as plasma fluxes at the onset of transition. This nodel predicts that the L- to H-mode transition is associated with the decrease of d E r /d r causing reduction of particle and energy fluxes at the critical gradient.