Dynamic Interactions of Plasmas and Fields (Physics)

等离子体和场的动态相互作用（物理）

• 批准号: 8713829
• 负责人: Reiner Stenzel
• 金额: $ 55.38万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-01 至 1991-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8713829&HistoricalAwards=false
• 关键词: Dynamic; Interactions; Plasmas; Fields; Physics

A three and a half year research program will continue the investigation of the interaction of plasmas with moving magnetic and electron fields. The resulting nonlinear plasma dynamics is of general interest in basic plasma physics and has many relevant applications in fusion and space research. Experiments will be performed in large laboratory plasmas which have extensive diagnostics and data processing capabilities. For example, volume measurements of magnetic fields, space charge fields, particle distribution functions, and wave phenomena have been performed. The proposed investigations include (i) Formation of new magnetic whistler shocks when the relative motion between plasmas and fields exceeds the whistler wave speed. Such processes arise when the ions remain effectively unmagnetized and shocks form at super-"whistleric" rather than super--"Alfvenic" speeds. (ii) The generation of magnetic fields due to plasma motion will be investigated (dynamo process). (iii) The mechanism of current and space charge neutralization of particle beams injected into plasmas will be studied. (iv) The stability of various current configurations with respect to tearing, coalescence, tilting, kinking, pinching and disruptions will be explored.

一项为期三年半的研究计划将继续进行， 等离子体与运动磁场相互作用的研究 和电子场。 由此产生的非线性等离子体动力学是 在基本等离子体物理学的普遍兴趣，并有许多相关的 在核聚变和空间研究中的应用 实验将 在大型实验室等离子体中进行， 诊断和数据处理能力。 比如说， 磁场，空间电荷场， 粒子分布函数和波动现象 执行。 建议的调查包括（i）成立 新的磁哨声冲击时， 等离子体和场超过了哨声波的速度。 等 当离子有效地保持未磁化时， 冲击波形成于超“哨声”而不是超“阿尔文” 速度. (ii)等离子体磁场的产生 将研究运动（发电机过程）。 (iii)的 粒子电流和空间电荷中和机理 将研究注入等离子体的束。 (iv)稳定性 关于撕裂的各种当前配置， 聚结、倾斜、扭结、挤压和破坏将是 探讨了