Collisionless Drift Waves Ranging from Current-Driven, Shear-Modified, and Electron-Temperature-Gradient Modes

R. Hatakeyama, Chanho Moon, S. Tamura, T. Kaneko

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The specific history of collisionless drift waves is marked by focusing upon current-driven, shear-modified, and electron-temperature-gradient modes. Studies of current-driven collisionless drift waves started in 1977 using the Innsbruck Q machine and was continued over 30 years until 2009 with topics such as plasma heating by drift waves in fusion-oriented confinement and space/astrophysical plasmas. Superposition of perpendicular flow velocity shear on parallel shear intensively modifies the drift wave characteristics through the variation of its azimuthal structure, where the parallel-shear driven instability is suppressed for strong perpendicular shears, while hybrid-ion velocity shear cause unexpected stabilization of the parallel-shear-modified drift wave. An electron temperature gradient can be formed easily by control of thermionic electron superimposed on ECR plasma, and is found to excite low-frequency fluctuation in the range of drift waves.

Original languageEnglish
Pages (from-to)537-545
Number of pages9
JournalContributions to Plasma Physics
Volume51
Issue number6
DOIs
Publication statusPublished - Jul 1 2011
Externally publishedYes

Fingerprint

temperature gradients
electron energy
shear
plasma heating
thermionics
astrophysics
flow velocity
stabilization
fusion
histories
low frequencies
causes
ions
electrons

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Collisionless Drift Waves Ranging from Current-Driven, Shear-Modified, and Electron-Temperature-Gradient Modes. / Hatakeyama, R.; Moon, Chanho; Tamura, S.; Kaneko, T.

In: Contributions to Plasma Physics, Vol. 51, No. 6, 01.07.2011, p. 537-545.

Research output: Contribution to journalArticle

@article{ccc126d195084baea315b2f468856d91,
title = "Collisionless Drift Waves Ranging from Current-Driven, Shear-Modified, and Electron-Temperature-Gradient Modes",
abstract = "The specific history of collisionless drift waves is marked by focusing upon current-driven, shear-modified, and electron-temperature-gradient modes. Studies of current-driven collisionless drift waves started in 1977 using the Innsbruck Q machine and was continued over 30 years until 2009 with topics such as plasma heating by drift waves in fusion-oriented confinement and space/astrophysical plasmas. Superposition of perpendicular flow velocity shear on parallel shear intensively modifies the drift wave characteristics through the variation of its azimuthal structure, where the parallel-shear driven instability is suppressed for strong perpendicular shears, while hybrid-ion velocity shear cause unexpected stabilization of the parallel-shear-modified drift wave. An electron temperature gradient can be formed easily by control of thermionic electron superimposed on ECR plasma, and is found to excite low-frequency fluctuation in the range of drift waves.",
author = "R. Hatakeyama and Chanho Moon and S. Tamura and T. Kaneko",
year = "2011",
month = "7",
day = "1",
doi = "10.1002/ctpp.201010156",
language = "English",
volume = "51",
pages = "537--545",
journal = "Contributions to Plasma Physics",
issn = "0863-1042",
publisher = "Wiley-VCH Verlag",
number = "6",

}

TY - JOUR

T1 - Collisionless Drift Waves Ranging from Current-Driven, Shear-Modified, and Electron-Temperature-Gradient Modes

AU - Hatakeyama, R.

AU - Moon, Chanho

AU - Tamura, S.

AU - Kaneko, T.

PY - 2011/7/1

Y1 - 2011/7/1

N2 - The specific history of collisionless drift waves is marked by focusing upon current-driven, shear-modified, and electron-temperature-gradient modes. Studies of current-driven collisionless drift waves started in 1977 using the Innsbruck Q machine and was continued over 30 years until 2009 with topics such as plasma heating by drift waves in fusion-oriented confinement and space/astrophysical plasmas. Superposition of perpendicular flow velocity shear on parallel shear intensively modifies the drift wave characteristics through the variation of its azimuthal structure, where the parallel-shear driven instability is suppressed for strong perpendicular shears, while hybrid-ion velocity shear cause unexpected stabilization of the parallel-shear-modified drift wave. An electron temperature gradient can be formed easily by control of thermionic electron superimposed on ECR plasma, and is found to excite low-frequency fluctuation in the range of drift waves.

AB - The specific history of collisionless drift waves is marked by focusing upon current-driven, shear-modified, and electron-temperature-gradient modes. Studies of current-driven collisionless drift waves started in 1977 using the Innsbruck Q machine and was continued over 30 years until 2009 with topics such as plasma heating by drift waves in fusion-oriented confinement and space/astrophysical plasmas. Superposition of perpendicular flow velocity shear on parallel shear intensively modifies the drift wave characteristics through the variation of its azimuthal structure, where the parallel-shear driven instability is suppressed for strong perpendicular shears, while hybrid-ion velocity shear cause unexpected stabilization of the parallel-shear-modified drift wave. An electron temperature gradient can be formed easily by control of thermionic electron superimposed on ECR plasma, and is found to excite low-frequency fluctuation in the range of drift waves.

UR - http://www.scopus.com/inward/record.url?scp=79959944890&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79959944890&partnerID=8YFLogxK

U2 - 10.1002/ctpp.201010156

DO - 10.1002/ctpp.201010156

M3 - Article

AN - SCOPUS:79959944890

VL - 51

SP - 537

EP - 545

JO - Contributions to Plasma Physics

JF - Contributions to Plasma Physics

SN - 0863-1042

IS - 6

ER -