Experimental Studies of Basic Physics of Plasma Transport

等离子体传输基础物理实验研究

• 批准号: 0902930
• 负责人: Amiya Sen
• 金额: $ 13.59万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902930&HistoricalAwards=false
• 关键词: Experimental; Studies; Basic; Physics; Plasma

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.

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。等离子体中的异常局部湍流传输将直接用新的诊断方法测量。 通过测量临界参数，基本的输运标度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用途。 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从波动导出的反馈信号调制。该测量与电势波动的互相关产生离子热输运。该项目的主要智力价值在于对等离子体异常输运物理学的核心问题：玻姆和陀螺玻姆标度提出的挑战。这将通过新的基础物理实验和相关的模型来完成。许多一般的概念和方法，特别是通过反馈的非线性湍流系统建模的实验确定，可以很好地外推到流体力学，空气动力学，化学反应系统等许多问题中，具有巨大的潜在利益。研究和教育的整合将通过学生接触该项目所代表的明确的跨学科研究来完成，包括实验室和课堂上的物理学，应用物理学，系统和控制工程。研究和教育基础设施的加强将通过与几个国家和国际大学和实验室的合作来完成。