Spectroscopy of carbon chain molecules, complexes and clusters

这里提出的研究的一部分是关于不稳定分子的电和磁性质的表征。这些分子具有高度的活性，因此它们的寿命很短，只有一毫秒或更短。由于它们作为反应中间体，不稳定分子参与了物理学、化学、天体化学和其他科学分支中的各种过程。这些分子的相关性的例子是监测我们大气中的污染物，臭氧消耗的性质，监测半导体器件的制造，了解燃烧和其他烟尘形成过程，以及行星和恒星大气的演变。第二部分研究团簇的物理和化学性质。团簇代表分子与小液滴或小固体颗粒之间的过渡状态。非键合的分子间相互作用，如货车德瓦尔斯相互作用和氢键是形成簇的原因。这些分子间的力可以直接和精确地探测通过高分辨率光谱。这些结果对弱力的量子化学计算提出了挑战，从而有助于推进理论的发展。

One part of the research proposed here is concerned with the characterization of the electric and magnetic properties of unstable molecules. These molecules are highly reactive and thus live for a very short time, a millisecond or less. Because they act as reaction intermediates, unstable molecules take part in a wide variety of processes in physics, chemistry, astrochemistry, and other branches of science. Examples of the relevance of these molecules are the monitoring of pollutant in our atmosphere, the nature of ozone depletion, monitoring of the manufacturing of semiconductor devices, understanding combustion and other soot forming processes, and the evolution of the atmospheres of planets and stars. The second part of the research is concerned with the physical and chemical properties of clusters. Clusters represent a transition regime between molecules and small liquid drops or small solid particles. Non-bonded intermolecular interactions, such as van der Waals interactions and hydrogen bonding are responsible for formation of clusters. These intermolecular forces can be directly and precisely probed by means of high-resolution spectroscopy. The results provide a challenge to quantum chemical calculations of weak forces, which thereby helps to advance the state of the theory.