RUI: Experiments on Trapped Atoms and Dielectric-Barrier Discharges

RUI：俘获原子和介质势垒放电实验

• 批准号: 0140135
• 负责人: Matthew Walhout
• 金额: $ 13万
• 依托单位: Calvin University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-01 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0140135&HistoricalAwards=false
• 关键词: RUI; Experiments; Trapped; Atoms; Dielectric

This RUI activity focuses on two projects. The first project uses a laser-cooling and trapping system for the measurement of metastable lifetimes in magneto-optically trapped krypton and argon, using a method of photon counting and metastable-state quenching to determine the single-atom spontaneous decay rate to a few percent. The second project builds on an earlier discovery and characterization of one-dimensional spatiotemporal patterns in a novel dielectric-barrier discharge (DBD) system, a class of high-voltage, ac-driven gaseous discharges that typically operate in the atmospheric pressure range and produce reactive chemical species and intense excimer fluorescence. This pattern formation is of basic interest in the field of non-linear dynamics and may hold promise in various diagnostic and/or control schemes in DBD applications.

RUI的活动主要集中在两个项目上。 第一个项目使用激光冷却和捕获系统测量磁光捕获的氪和氩的亚稳态寿命，使用光子计数和亚稳态淬火的方法来确定单个原子的自发衰变率为百分之几。 第二个项目建立在一个新的介质阻挡放电（DBD）系统，一类高电压，交流驱动的气体放电，通常在大气压范围内工作，并产生活性化学物质和强烈的受激准分子荧光一维时空模式的早期发现和表征。 这种模式的形成在非线性动力学领域的基本兴趣，并可能在DBD应用中的各种诊断和/或控制方案的承诺。