Collaborative Research: Advancing the Physics of Magnetized Dusty Plasmas

合作研究：推进磁化尘埃等离子体物理学

• 批准号: 1613087
• 负责人: Edward Thomas
• 金额: $ 1.5万
• 依托单位: Auburn University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-15 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1613087&HistoricalAwards=false
• 关键词: Collaborative; Research; Advancing; Physics; Magnetized

This project will study the basic physics of the interaction of strong magnetic fields with dusty (or complex) plasmas, which are four-component systems consisting of the usual plasma constituents of electrons, ions, and neutral atoms with the addition of a third charged component - nanometer to micrometer sized solid particulates; i.e., "dust". Almost all naturally-occurring plasmas contain dust, from planetary rings, to the charged ices that form noctilucent clouds high in the Earth's atmosphere, to the presence of dust in star- and planet-forming regions. Current work on the formation and control of nanometer-sized particles in industrial plasmas has also led to improved techniques for materials synthesis, which may have long term societal benefit. Nonetheless, there are many aspects of dusty plasma research that remain untapped. One such area is the role of magnetic fields. Because the constituent particles of a dusty plasma are charged, it means that their dynamics can be modified and controlled by magnetic fields. However, this requires the production of large, steady state magnetic fields, and only with the recent advancements in superconducting technologies has it become possible to build devices capable of the experimental conditions required to explore the physics of magnetized dusty plasmas. This opens up new and exciting research opportunities for dusty plasma research to access experimental regimes that allow investigations with both astrophysical and technological relevance.This study, which is a collaboration between experimental research at Auburn University and the University of Iowa, and theoretical research at the University of California - San Diego, will investigate the detailed physics that describes the coupling between the plasma, magnetic fields and the charged dust. Investigations will be centered on the Magnetized Dusty Plasma Experiment (MDPX) - a recently commissioned multi-user, multi-configuration, high magnetic field device located at Auburn University. Three main topics will be investigated: (1) the direct influence of the magnetic field on the properties of the charged microparticles; (2) the formation of self-organized and newly discovered imposed ordered states in the magnetized plasma; and (3) the generation of new types of collective phenomena (waves and instabilities) that occur in magnetized plasmas. This project will support the training of undergraduate and graduate student researchers at the partner institutions. Through collaborations, additional research opportunities will be provided for domestic and international graduate students to make use of the MDPX device to further their research. Further research partnerships with colleagues at universities, national laboratories, and international institutions will be established to broaden the user community who seek to use the MDPX device for both dusty plasma and basic plasma research projects.

该项目将研究强磁场与灰尘（或复杂）等离子体的相互作用的基本物理，这些物理是由电子，离子和中性原子的通常等离子体组成的四组分系统，并添加了第三个带电的组分 - 纳米计 - 纳米计 - 纳米型 - 纳米尺寸的固体固体颗粒；即，“灰尘”。几乎所有自然出现的等离子体都包含尘埃，从行星环到形成地球大气中高云云的带电冰，再到形成星球和行星的灰尘。 目前关于工业等离子体中纳米尺寸颗粒的形成和控制的工作也导致了材料合成的技术改进，这可能具有长期的社会利益。 尽管如此，灰尘等离子体研究的许多方面仍未开发。这样的领域之一就是磁场的作用。由于尘土等离子体的组成粒子被充电，因此意味着它们的动力学可以通过磁场进行修改和控制。但是，这需要生产大型稳态磁场，并且只有随着超导技术的最新进步，才有可能构建能够探索磁化灰尘灰尘等离子体物理学所需的实验条件的设备。 This opens up new and exciting research opportunities for dusty plasma research to access experimental regimes that allow investigations with both astrophysical and technological relevance.This study, which is a collaboration between experimental research at Auburn University and the University of Iowa, and theoretical research at the University of California - San Diego, will investigate the detailed physics that describes the coupling between the plasma, magnetic fields and the charged dust.调查将集中在磁性灰尘等离子体实验（MDPX）上 - 最近被委托的多用户多用户，位于奥本大学的高磁场设备。 将研究三个主要主题：（1）磁场对带电微粒的性质的直接影响； （2）在磁化等离子体中的自组织和新发现的有序状态的形成； （3）在磁化等离子体中发生的新型集体现象（波浪和不稳定性）的产生。该项目将支持合作伙伴机构的本科和研究生研究人员的培训。通过合作，将为国内和国际研究生提供更多的研究机会，以利用MDPX设备来进一步研究。将建立与大学，国家实验室和国际机构的同事的进一步研究合作伙伴关系，以扩大寻求将MDPX设备用于Dusty等离子体和基本血浆研究项目的用户社区。