国家球形环面实验中由电子温度梯度驱动的短尺度湍流涨落。
Short-scale turbulent fluctuations driven by the electron-temperature gradient in the national spherical torus experiment.
作者信息
Mazzucato E, Smith D R, Bell R E, Kaye S M, Hosea J C, LeBlanc B P, Wilson J R, Ryan P M, Domier C W, Luhmann N C, Yuh H, Lee W, Park H
机构信息
Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
出版信息
Phys Rev Lett. 2008 Aug 15;101(7):075001. doi: 10.1103/PhysRevLett.101.075001. Epub 2008 Aug 11.
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 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.
在美国国家球形环面实验的等离子体中，利用电磁波的相干散射进行的测量表明，在波数k⊥ρ(e)=0.1 - 0.4范围内存在湍流涨落，这对应着一个几乎等于无碰撞趋肤深度的湍流尺度长度。实验观测以及与线性回旋动理学稳定性代码的数值结果的吻合，支持了这样一种推测：观测到的湍流是由电子温度梯度驱动的。
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