Short-scale turbulent fluctuations driven by the electron-temperature gradient in the national spherical torus experiment

被引：82

作者：

Mazzucato, E. ^{[1
]}

Smith, D. R. ^{[1
]}

Bell, R. E. ^{[1
]}

Kaye, S. M. ^{[1
]}

Hosea, J. C. ^{[1
]}

LeBlanc, B. P. ^{[1
]}

Wilson, J. R. ^{[1
]}

Ryan, P. M. ^{[2
]}

Domier, C. W. ^{[3
]}

Luhmann, N. C., Jr. ^{[3
]}

Yuh, H. ^{[4
]}

Lee, W. ^{[5
]}

Park, H. ^{[5
]}

机构：

[1] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Univ Calif Davis, Davis, CA 95616 USA

[4] Nova Photon Inc, Princeton, NJ 08540 USA

[5] POSTECH, Dept Phys, Pohang 790784, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.101.075001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements with coherent scattering of electromagnetic waves in plasmas of the National Spherical Torus Experiment indicate the existence of turbulent fluctuations in the range of wave numbers k(perpendicular to)rho(e)=0.1-0.4, corresponding to a turbulence scale length nearly equal to the collisionless skin depth. Experimental observations and agreement with numerical results from a linear gyrokinetic stability code support the conjecture that the observed turbulence is driven by the electron-temperature gradient.

引用

页数：4

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