Figure 4

Radial profiles for (a) ratio of the inverse ion temperature scale-length in H- to L-phases,
, (b) effect of an inhomogeneous radial electric field on the turbulence suppression predicted by the Er-bifurcation model,
as defined in Eq. 2 in the discharges E049228 (co-NBI) and E049229 (counter-NBI). Relationship between
versus square root of Z is also shown in (c).