Fig. 4

Measurements for the EAST discharge 75261: (a) the density peaking factor, (b) the turbulence amplitude at \({k}_{\theta }=12 {\text{cm}}^{-1}\) , (c) mean poloidal rotation velocity and (d) the turbulence power spectral density at \({k}_{\theta }=12 {\text{cm}}^{-1}\) in the core region measured by CO₂ laser collective scattering diagnostic.