Stabilization of the drift-cone instability by a flow shear
Piterskii V. V. , Yushmanov E. E. , Yakovets A. N.
An experimental result indicating suppression of plasma turbulence by a flow shear at the "elementary level," i.e., with respect to separately existing, weakly developed turbulence, is presented. The object is the drift-cone mode on impurities which develops in a long mirror trap. End electrodes were used to introduce a controllable Ε Χ В shear into the plasma. It was determined that a sufficiently strong shear completely quenches the instability. The threshold value of the shear agrees with an estimate based on simple considerations. © 1995 American Institute of Physics.
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![](/ps/1215/article_18368_800_head.png "An experimental result indicating suppression of plasma turbulence by a flow shear at the "elementary level," i.e., with respect to separately existing, weakly developed turbulence, is presented. The object is the drift-cone mode on impurities which develops in a long mirror trap. End electrodes were used to introduce a controllable Ε Χ В shear into the plasma. It was determined that a sufficiently strong shear completely quenches the instability. The threshold value of the shear agrees with an estimate based on simple considerations. © <i>1995 American Institute of Physics.</i>")