Infrared spectroscopic studies of molecules, nano-, and micro-particles in artificial atmospheres

人造大气中分子、纳米和微米颗粒的红外光谱研究

• 批准号: 517998242
• 负责人: Professor Dr. Sigurd Bauerecker
• 金额: --
• 依托单位: Institut für Physikalische und Theoretische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/517998242?language=en
• 关键词: Infrared; spectroscopic; studies; molecules; nano

The first research topic focuses on high-resolution molecular spectroscopy of molecules in the gas phase. Among other things, fundamental goals are pursued, such as the elucidation of intramolecular dynamics via global hyperpotential surfaces, the provision of spectroscopic measurement data and molecular parameters, such as line positions, band centers, line strengths, pressure broadening coefficients and pressure shift coefficients, also for databases such as Hitran. Here, the focus is on the molecules chlorine dioxide, ozone, trifluoromethane with their diverse isotopologues and isotopomers. The planned work also has application references, such as the physical chemistry of gases in the atmospheres of Earth, other planets, their moons, and in interstellar space. In the second research topic, an experimental simulation and IR spectrometric measurement of the CO2-dominated atmosphere of Mars will be performed. Both the objectives and the experimental capabilities go far beyond those of the preliminary project. In the meantime, a high-resolution FTIR spectrometer with more than doubled resolving power is available, as well as a long-path cell with 200 m optical path, an extraordinarily temperature-stable temperable gas cell, which was developed in the preliminary project, as well as various bolometers and a rare high-performance germanium-copper detector in the far infrared.

第一个研究课题是气相分子的高分辨率分子光谱。除此之外，研究人员还追求一些基本目标，如通过全局超电位表面阐明分子内动力学，提供光谱测量数据和分子参数，如谱线位置、谱带中心、谱线强度、压力加宽系数和压力位移系数，也可用于Hitran等数据库。这里的重点是分子二氧化氯、臭氧、三氟甲烷及其不同的同位素物和同位素体。计划中的工作也有应用参考，例如地球、其他行星、它们的卫星和星际空间大气中气体的物理化学。在第二个研究课题中，将对火星以二氧化碳为主的大气进行实验模拟和红外光谱测量。目标和实验能力都远远超出了初步项目的目标和能力。同时，拥有分辨力翻倍以上的高分辨率FTIR光谱仪、200 m光程的长程电池、前期项目研制的超温稳定的可调气体电池，以及各种测热计和罕见的高性能远红外锗铜探测器。