RUI: Characterization and Control of Electron Dynamics in an Ultracold Plasma

RUI：超冷等离子体中电子动力学的表征和控制

• 批准号: 0613659
• 负责人: Michael Lim
• 金额: $ 18.9万
• 依托单位: Rowan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0613659&HistoricalAwards=false
• 关键词: RUI; Characterization; Control; Electron; Dynamics

This program of experiments focuses on the observation and control of novel states of matter and phase transitions in ultracold charge samples. Created by photo-ionizing laser cooled atoms, this type of system has recently been the subject of intense experimental and theoretical activity. An innovative apparatus enables new studies on a rich array of behavior in both free and confined ultracold charge samples, making connections to atomic, plasma, and condensed matter physics. Initial measurements will elucidate the early, up to 100 nanoseconds, free plasma dynamics, a regime in which many theoretical predictions have been made, so far without experimental confirmation. The early behavior is expected to include the release of correlation energy, collisional atomic recombination, and associated plasma heating. Later work will focus on applying a magnetic field and standing optical electric field to restrict effective electron mobility in the sample. This project has been propelled by the intense involvement of six Rowan undergraduates, who have received training in many aspects of experiment and theory. Due to the novel interdisciplinary nature of this project, students continue to make meaningful connections between atomic, plasma, and condensed matter physics. They will be encouraged to accompany the PI to conferences in these subfields, and will also participate in writing reports for publication.

该实验计划的重点是观察和控制超冷电荷样品中新的物质状态和相变。这种类型的系统由光电离激光冷却原子创建，最近成为密集实验和理论活动的主题。一种创新设备能够对自由和受限超冷电荷样品中的一系列丰富行为进行新研究，与原子、等离子体和凝聚态物理建立联系。初步测量将阐明早期、长达 100 纳秒的自由等离子体动力学，在这一领域中已经做出了许多理论预测，但迄今为止尚未得到实验证实。预计早期行为包括相关能量的释放、碰撞原子重组和相关的等离子体加热。后续工作将集中于应用磁场和常驻光电场来限制样品中的有效电子迁移率。 该项目是由六名罗文本科生的积极参与推动的，他们接受过实验和理论许多方面的培训。由于该项目新颖的跨学科性质，学生们继续在原子、等离子体和凝聚态物理之间建立有意义的联系。我们将鼓励他们陪同 PI 参加这些子领域的会议，并将参与撰写报告以供出版。