U.S.-Sweden Planning Visit: Research on the Dynamics of Complex Systems with Ion Storage Rings

美国-瑞典计划访问：离子存储环复杂系统动力学研究

• 批准号: 1306495
• 负责人: Michael Fogle
• 金额: $ 2.15万
• 依托单位: Auburn University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-15 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1306495&HistoricalAwards=false
• 关键词: U.S.; Sweden; Planning; Visit; Research

The goal of this catalytic project is to strengthen a U.S.-Swedish collaboration between Principal Investigator Michael Fogle of Auburn University, in Alabama, and Richard Thomas at Stockholm University. Together, they will examine the dynamics of molecular dissociation under well controlled energy states and experimental scattering conditions. Their research plan involves conducting studies at the new double, electrostatic, ion storage ring facility in Stockholm, known as DESIREE (Double ElectroStatic Ion Ring ExperimEnt). The DESIREE facility is a unique ion storage ring that allows simultaneous storage of both cation and anion species, thereby permitting detailed investigations of many processes involving molecular ions. Results from the team?s early studies of dissociation dynamics in this system should contribute to broader understanding of similar processes in more complicated systems, with relevance to atomic and molecular physics. The collaboration engages a U.S. graduate student and builds upon the PI?s research in electron-driven dissociation dynamics and his Swedish partner?s expertise in dissociation dynamics and interaction-specific rate constant measurements, particularly for astrophysics. By using the new ring facility to explore electron-driven dynamics in ion-ion charge exchange processes, the researchers expect to gain preliminary insights into negative ion chemistry in the upper atmosphere. Subsequent work at the DESIREE facility with its sensitive detectors is expected to help define direction for follow-on projects that can have broader impacts by adding to our basic understanding of change exchange mechanisms related to atmospheric chemistry, a wide array of complex carbon systems and biomolecules, as well as astrophysics. Furthermore, by participating in the initial ion-ion and ion-electron experiments at DESIREE, this timely developmental project should help to reinforce beneficial Europe-U.S. partnerships and open opportunities for future cooperative experiments at world class European facilities such as DESIREE and the Cryogenic Storage Ring, under construction in Germany.

该催化项目的目标是加强阿拉巴马州奥本大学首席研究员迈克尔·福格尔和斯德哥尔摩大学理查德·托马斯之间的美国与瑞典合作。 他们将共同研究在良好控制的能态和实验散射条件下分子解离的动力学。 他们的研究计划包括在斯德哥尔摩的新型双静电离子存储环设施（称为 DESIREE（双静电离子环实验））进行研究。 DESIREE 设施是一个独特的离子存储环，可以同时存储阳离子和阴离子物质，从而可以对涉及分子离子的许多过程进行详细研究。该团队对该系统中解离动力学的早期研究结果应有助于更广泛地理解更复杂系统中与原子和分子物理学相关的类似过程。此次合作涉及一名美国研究生，并建立在 PI 在电子驱动解离动力学方面的研究及其瑞典合作伙伴在解离动力学和相互作用特定速率常数测量（特别是天体物理学）方面的专业知识的基础上。 通过使用新的环形设施探索离子电荷交换过程中的电子驱动动力学，研究人员期望获得对高层大气中负离子化学的初步了解。 DESIREE 设施及其敏感探测器的后续工作预计将有助于确定后续项目的方向，这些项目可以通过增加我们对与大气化学、各种复杂碳系统和生物分子以及天体物理学相关的变化交换机制的基本理解来产生更广泛的影响。 此外，通过参与 DESIREE 的初始离子-离子和离子-电子实验，这个及时的开发项目应该有助于加强欧洲与美国之间的互惠互利。伙伴关系，并为未来在世界一流的欧洲设施（例如德国正在建设的 DESIREE 和低温储存环）进行合作实验提供了机会。