  Intermittent positive bursts of plasma density detected by Langmuir probes at
the edge of the TEXTOR tokamak are investigated. Burst statistical properties
and temporal characteristics together with their radial dependence are studied
in two different regimes - with electrode biasing and dynamic ergodic divertor
(DED). Similar modification of intermittent burst characteristics are observed.
Namely, the average burst rate increases and the average burst duration
decreases compared to Ohmic conditions. Statistical properties are also
modified in the same way in both regimes. The reason is that biasing and
certain regimes of DED cause the modification of radial electric field which
affects similarly the dynamics of coherent turbulent structures and plasma
transport through ErxBt induced sheared poloidal rotation. Thus, after detailed
investigations and refinement, certain regimes of DED can be used as
"contactless biasing" for the external control of plasma turbulent transport in
fusion devices.
