Observation and control of transverse energy-transport barrier due to the formation of an energetic-electron layer with sheared ExB flow.

Abstract

Off-axis electron-cyclotron heating in an axisymmetric barrier mirror produces a cylindrical layer with energetic electrons, which flow through the central cell and into the end region. The layer, producing a localized bumped ambipolar potential Phi(C), forms a strong shear of radial electric fields E(r) and peaked vorticity with the direction reversal of E(r)xB sheared flow near the Phi(C) peak. Intermittent vortexlike turbulent structures near the layer are suppressed in the central cell by this actively produced transverse energy-transport barrier; this results in T(e) and T(i) rises surrounded by the layer.

Cite this paper

@article{Cho2006ObservationAC, title={Observation and control of transverse energy-transport barrier due to the formation of an energetic-electron layer with sheared ExB flow.}, author={Tamaki Cho and Junko Kohagura and T. Numakura and Masahiro Hirata and Hisomu Higaki and Hitoshi Hojo and Mitsuko Ichimura and Kaori Ishii and Khyrul M Islam and Atsuo Itakura and I Katanuma and Ryoji Minami and Yasuhide Nakashima and T Saito and Yoshinori Tatematsu and Osamu Watanabe and Masayuki Yoshikawa and Akihiro Kojima and Yoshihiro Miyake and Yasuyoshi Miyata and Katsuyoshi Shimizu and Yasushi Tomii and Michihiro C. Yoshida and Kenji Sakamoto and Takao Imai and V. P. Pastukhov and Shin-ichi Miyoshi}, journal={Physical review letters}, year={2006}, volume={97 5}, pages={055001} }