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

被引：80
|
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.
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页数：4
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