Experimental Studies of Basic Physics of Plasma Transport

该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。异常的等离子体局部湍流传输将用新的诊断方法直接测量。通过测量临界参数，输运的基本标度定律将与各种理论进行比较。该项目的一个关键要素是反馈的诊断性使用。第一次离子温度波动诊断使用离子能量分析器，该离子能量分析器由来自波动的反馈信号调制。这种测量与势能涨落的相互关联产生了离子热输运。该项目的主要学术价值在于对等离子体反常输运物理的中心问题提出的挑战：玻姆和陀螺-玻姆标度。许多一般的概念和方法，特别是通过反馈建立非线性湍流系统模型的实验确定，对流体力学、空气动力学、化学反应系统等领域的许多问题都有很大的推论作用，具有巨大的潜在效益。研究和教育的整合将通过让学生接触到该项目所代表的明确的跨学科研究来实现，包括实验室和课堂上的物理、应用物理、系统和控制工程。将通过与若干国家和国际大学和实验室的合作，加强研究和教育的基础设施。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Anomalous local turbulent transport in plasmas will be measured directly with novel diagnostics. By measuring critical parameters, the fundamental scaling laws of transport will be compared with various theories. A key element of the project is the diagnostic uses of feedback. A first ever ion temperature fluctuation diagnostic uses an ion energy analyzer which is modulated by a feedback signal derived from the fluctuations. The cross-correlation of this measurement with the potential fluctuations yields the ion thermal transport. The chief intellectual merit of the project lies in the challenge posed in the central issue in plasma anomalous transport physics: Bohm and gyro-Bohm scaling. This will be done via novel basic physics experiments and correlated models.Many of the general concepts and methodologies, especially the experimental determination of a nonlinear turbulent system modeling via feedback, are quite extrapolatable to many problems in fluid mechanics, aerodynamics, chemical reaction systems etc. with great potential benefit. The integration of research and education will be accomplished by exposure of the students to the clearly interdisciplinary research represented by the project, containing physics, applied physics, system and control engineering both in the laboratory and in the classes. Enhancement of the infrastructure of research and education will be accomplished via collaborations with several national and international universities and laboratories.