Observation of the Effects of Radially Sheared Electric Fields on the Suppression of Turbulent Vortex Structures and the Associated Transverse Loss in GAMMA 10

Physical Review Letters Volume 94 Issue 8 published_at 2005-05-04
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Title ( eng )
Observation of the Effects of Radially Sheared Electric Fields on the Suppression of Turbulent Vortex Structures and the Associated Transverse Loss in GAMMA 10
Creator
Cho Teruji
Yoshida Maiko
Kohagura Junko
Hirata Mafumi
Numakura Tomoharu
Hojo Hitoshi
Ichimura Makoto
Ishii Kameo
Islam Khairul Md.
Itakura Akiyoshi
Katanuma Isao
Nakashima Yousuke
Saito Teruo
Tatematsu Yoshinori
Yoshikawa Masayuki
Kojima Y.
Tokioka Suguru
Yokoyama Noboru
Tomii Yamato
Imai Tuyosi
Pastukhov V. P.
Miyoshi Syoichi
Source Title
Physical Review Letters
Volume 94
Issue 8
Abstract
Vortexlike turbulent structures in hot-ion mode plasmas with several keVare observed in the case with a radially produced weak shear of electric fields Er. However, a strong Er shear formation due to a high ionconfining potential φc production clears up these vortices together with plasma-confinement improvement and disappearance of both drift-wave and turbulencelike Fourier spectral signals. These findings are based on three-time progress in φc in comparison to φc attained 1992–2002. The significant advance of φc is well extended in line with proposed potential-formation physics scalings.
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 2005-05-04
Rights
Copyright (c) 2005 American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.94.085002
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.94.085002