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'.

中性和离子化的氢原子和分子在自然环境中起着关键作用，例如早期宇宙，间或偶数培养基以及许多技术过程，最复杂的过程是受控的融合。为了建模在不同条件下含有氢的氢的形成和破坏，需要有关相关基本过程的基本信息，尤其是在广泛的温度和密度范围内。该提议的目的是继续并加深我们在德国和塞尔维亚的团体之间的合作。使用Köln中可用的低温离子陷阱，已经获得了有趣的结果，包括质子从内部热H3+转移到少数K的碰撞和He-H3+的复杂感染光谱，这是一种基本重要性的系统。因为H3+不仅对星体化学，而且对氢等离子体很重要，因此我们的低温活性必须在EV范围内的前临时完成。对于伊戈尔·萨维奇（Igor Savic）教授的这一经验以及他在塞尔维亚诺维·萨德（Novi Sad）的小组的贡献至关重要。该提案的实验部分包括使用资源完成指导的离子光束仪器，并知道在2017年春季春季在科尔尼中可用并将其转移到塞尔维亚。在该提案的科学目的的中心是H3 + + He碰撞作为内部和翻译能量的函数的研究。未来的实验还将在碰撞能或温度下包括其他离子（例如烃），与融合反应堆和恒星出口有关。我们的低温活动将在DFG核心设施“ Terahertz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