Astrophysics and plasma relevant experimental studies of hydrogen and helium chemistry in high and low temperature ion traps and guides

高低温离子阱和导向器中氢和氦化学的天体物理学和等离子体相关实验研究

• 批准号: 324334646
• 负责人: Professor Dr. Stephan Schlemmer
• 金额: --
• 依托单位: Institut für Astrophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/324334646?language=en
• 关键词: Astrophysics; plasma; relevant; experimental; studies

Neutral and ionized hydrogen atoms and molecules play a key role in natural environ-ments such as the early universe, inter- or circumstellar media and in many technological processes, the most complicated one being controlled fusion. In order to model the formation and destruction of hydrogen containing species under different conditions, fundamental information on the relevant elementary processes is needed, especially over a wide range of temperatures and densities. The goal of this proposal is to continue and deepen the cooperation between our groups in Germany and Serbia. Using the cryogenic ion traps available in Köln, interesting results already have been obtained including proton transfer from internally hot H3+ to He at collision energies of a few K and complex infrared spectra of He-H3+, a system of fundamental importance. Because H3+ is not only important for astrochemistry but also for hydrogen plasmas, our low temperature activities must be complemented with ex-periments in the eV range. For this the experiences of Prof. Igor Savic and the contribu-tions of his group at the University of Novi Sad in Serbia will be essential. The experi-mental part of this proposal consists of the completion of a guided ion beam instrument using the resources and know how available in Köln and to transfer it to Serbia in spring 2017. In the center of the scientific aims of this proposal are studies of H3+ + He collisions as a function of the internal and translational energy. Future experiments will also include other ions (e.g. hydrocarbons) at collision energies or temperatures, relevant for fusion reactors and stellar outflows. Our low temperature activities will be continued in the frame of the DFG core facility 'Cologne Center for Terahertz Spectroscopy'.

中性和电离的氢原子和分子在自然环境中发挥着关键作用，例如早期宇宙、星际或星际介质以及许多技术过程，其中最复杂的是受控聚变，以模拟物质的形成和破坏。不同条件下的含氢物质，需要有关基本过程的基本信息，特别是在广泛的温度和密度范围内。该提案的目标是继续并深化我们在德国和塞尔维亚的团队之间使用低温的合作。可用离子阱在科隆，有趣的结果已经包括在几 K 的碰撞能量下从内部热 H3+ 到 He 的质子转移以及 He-H3+ 的复杂红外光谱，这是一个具有根本重要性的系统，因为 H3+ 不仅对天体化学很重要，而且对于天体化学也很重要。对于氢等离子体，我们的低温活动必须辅以 eV 范围内的实验，为此，Igor Savic 教授的经验及其在诺维大学的团队的贡献。塞尔维亚的 Sad 项目至关重要，该提案的实验部分包括利用科隆现有的资源和技术完成引导离子束仪器，并于 2017 年春季将其转移到塞尔维亚。该提案是研究 H3+ + He 碰撞作为内部和平移能量的函数，未来的实验还将包括与聚变反应堆和恒星相关的碰撞能量或温度下的其他离子（例如碳氢化合物）。我们的低温活动将在 DFG 核心设施“科隆太赫兹光谱中心”的框架内继续进行。

项目成果

Formation of H3+ in collisions of H2+ with H2 studied in a Guided Ion Beam Instrument.

在引导离子束仪器中研究 H2 与 H2 碰撞中 H3 的形成

• DOI: 10.1002/cphc.202000258
• 发表时间: 2020
• 期刊: Chemphyschem : a European journal of chemical physics and physical chemistry
• 作者: I. Savić; S. Schlemmer; D. Gerlich
• 通讯作者: D. Gerlich