Drift-wave instability excited by field-aligned ion flow velocity shear in the absence of electron current

T. Kaneko, Hironori Tsunoyama, R. Hatakeyama

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

The excitation of the drift-wave instability by the ion flow velocity shear in the absence of the electron drift flow was experimentally demonstrated. The fluctuation amplitude was observed to increase with increasing the shear strength, but the instability was found to be gradually stabilized when the shear strength exceeds the critical value. The experimental results are in good agreement with the dependence of the theoretical growth rate on the shear parameter, which is calculated in the kinetic treatment including the effect of the radial density gradient.

Original languageEnglish
JournalPhysical Review Letters
Volume90
Issue number12
Publication statusPublished - 2003 Mar 28
Externally publishedYes

Fingerprint

shear strength
flow velocity
shear
ions
electrons
gradients
kinetics
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Drift-wave instability excited by field-aligned ion flow velocity shear in the absence of electron current. / Kaneko, T.; Tsunoyama, Hironori; Hatakeyama, R.

In: Physical Review Letters, Vol. 90, No. 12, 28.03.2003.

Research output: Contribution to journalArticle

@article{14f25b35048c45d590c0fa126861a7a9,
title = "Drift-wave instability excited by field-aligned ion flow velocity shear in the absence of electron current",
abstract = "The excitation of the drift-wave instability by the ion flow velocity shear in the absence of the electron drift flow was experimentally demonstrated. The fluctuation amplitude was observed to increase with increasing the shear strength, but the instability was found to be gradually stabilized when the shear strength exceeds the critical value. The experimental results are in good agreement with the dependence of the theoretical growth rate on the shear parameter, which is calculated in the kinetic treatment including the effect of the radial density gradient.",
author = "T. Kaneko and Hironori Tsunoyama and R. Hatakeyama",
year = "2003",
month = "3",
day = "28",
language = "English",
volume = "90",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "12",

}

TY - JOUR

T1 - Drift-wave instability excited by field-aligned ion flow velocity shear in the absence of electron current

AU - Kaneko, T.

AU - Tsunoyama, Hironori

AU - Hatakeyama, R.

PY - 2003/3/28

Y1 - 2003/3/28

N2 - The excitation of the drift-wave instability by the ion flow velocity shear in the absence of the electron drift flow was experimentally demonstrated. The fluctuation amplitude was observed to increase with increasing the shear strength, but the instability was found to be gradually stabilized when the shear strength exceeds the critical value. The experimental results are in good agreement with the dependence of the theoretical growth rate on the shear parameter, which is calculated in the kinetic treatment including the effect of the radial density gradient.

AB - The excitation of the drift-wave instability by the ion flow velocity shear in the absence of the electron drift flow was experimentally demonstrated. The fluctuation amplitude was observed to increase with increasing the shear strength, but the instability was found to be gradually stabilized when the shear strength exceeds the critical value. The experimental results are in good agreement with the dependence of the theoretical growth rate on the shear parameter, which is calculated in the kinetic treatment including the effect of the radial density gradient.

UR - http://www.scopus.com/inward/record.url?scp=0038613095&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038613095&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0038613095

VL - 90

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 12

ER -