Sheared Radial Electric-Field Effects on Turbulence Suppression due to Doubly Advanced Potential-Height Formation

Teruji CHO; Maiko YOSHIDA; Hiroyuki HIGAKI; Mafumi HIRATA; Hitoshi HOJO; Makoto ICHIMURA; Kameo ISHII; Md. Khairul ISLAM; Akiyoshi ITAKURA; Isao KATANUMA; Junko KOHAGURA; Yousuke NAKASHIMA; Tomoharu NUMAKURA; Teruo SAITO; Yoshinori TATEMATSU; Masayuki YOSHIKAWA; Yuichiro TAKEMURA; Vladimir P. PASTUKHOV; Syoichi MIYOSHI; GAMMA 10 GROUP

doi:10.1585/jspf.80.81

Rapid Communications

Sheared Radial Electric-Field Effects on Turbulence Suppression due to Doubly Advanced Potential-Height Formation

Teruji CHO, Maiko YOSHIDA, Hiroyuki HIGAKI, Mafumi HIRATA, Hitoshi HOJO, Makoto ICHIMURA, Kameo ISHII, Md. Khairul ISLAM, Akiyoshi ITAKURA, Isao KATANUMA, Junko KOHAGURA, Yousuke NAKASHIMA, Tomoharu NUMAKURA, Teruo SAITO, Yoshinori TATEMATSU, Masayuki YOSHIKAWA, Yuichiro TAKEMURA, Vladimir P. PASTUKHOV, Syoichi MIYOSHI, GAMMA 10 GROUP

Author information

Teruji CHO
Plasma Research Center, University of Tsukuba
Maiko YOSHIDA
Plasma Research Center, University of Tsukuba
Hiroyuki HIGAKI
Plasma Research Center, University of Tsukuba
Mafumi HIRATA
Plasma Research Center, University of Tsukuba
Hitoshi HOJO
Plasma Research Center, University of Tsukuba
Makoto ICHIMURA
Plasma Research Center, University of Tsukuba
Kameo ISHII
Plasma Research Center, University of Tsukuba
Md. Khairul ISLAM
Plasma Research Center, University of Tsukuba
Akiyoshi ITAKURA
Plasma Research Center, University of Tsukuba
Isao KATANUMA
Plasma Research Center, University of Tsukuba
Junko KOHAGURA
Plasma Research Center, University of Tsukuba
Yousuke NAKASHIMA
Plasma Research Center, University of Tsukuba
Tomoharu NUMAKURA
Plasma Research Center, University of Tsukuba
Teruo SAITO
Plasma Research Center, University of Tsukuba
Yoshinori TATEMATSU
Plasma Research Center, University of Tsukuba
Masayuki YOSHIKAWA
Plasma Research Center, University of Tsukuba
Yuichiro TAKEMURA
Plasma Research Center, University of Tsukuba
Vladimir P. PASTUKHOV
Kurchatov Institute
Syoichi MIYOSHI
Plasma Research Center, University of Tsukuba
GAMMA 10 GROUP
Plasma Research Center, University of Tsukuba

Keywords: shear effects, turbulence suppression, drift wave suppression, confinement improvement, radially produced electric fields

JOURNAL FREE ACCESS

2004 Volume 80 Issue 2 Pages 81-82

DOI https://doi.org/10.1585/jspf.80.81

Details

Abstract

Remarkable effects of radially produced shear of electric fields dE_r⁄dr on both turbulent fluctuations and drift waves are experimentally demonstrated with improvement in plasma confinement for the first time in the tandem mirror GAMMA 10. These electric-shear effects are performed on the basis of a factor of two progress in ion-confining potential (φ_c) formation due to advanced electron-cyclotron-heating powers and vacuum conditions; the dependence of φ_c is consistent with our proposed physics scaling.

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