Catalyzing new international collaboration. US-Taiwan collaboration of experimental and theoretical study of rovibrational spectra of small hydrogen-containing molecules and ions.

我们对天文世界的大部分知识来自于原子和分子的电磁辐射的发射、吸收和散射。原子和分子光谱的天文观测，包括跃迁能量、强度和光偏振，辅之以实验室实验和理论计算，在研究恒星大气中是必不可少的。这项CNIC建议的目标是促进美国亚利桑那大学化学与生物化学系的Ludwik Adamowicz教授小组与台湾清华大学物理系Jow-TSong Shy教授之间的国际跨学科合作，对含氢小分子和团簇的振动(Rovib)光谱进行非常精确的实验和理论研究。这些系统构成了宇宙质量的很大一部分，是星际化学的关键。这项合作的目标是表征和指认所研究的分子体系的振动光谱。获得的数据可以非常有助于识别望远镜记录的谱线，并将这些谱线分配给特定的分子和星系团。因此，我们将获得关于宇宙中不同领域的组成以及在那里发生的化学的知识。这种合作将具有非常不同研究概况的小组聚集在一起。台湾集团一直致力于小分子、中性分子和带电分子体系的高精度实验光谱研究。亚利桑那州理论化学小组一直致力于发展和应用非常精确的量子力学方法来计算小原子和小分子的光谱。这两组人都在各自的领域取得了成就。在这个项目中，理论和实验将结合在一起，阐明涉及氢及其同位素的分子和团簇的光谱。这些研究在本质上是非常基础的，因此它们非常适合NSF的资助。

The majority of our knowledge of the astronomical world is derived from the emission, absorption,and scattering of electromagnetic radiation from atoms and molecules. The astronomical observationsof atomic and molecular spectra including transition energies, intensities, and light polarizationcomplemented with laboratory experiments and theoretical calculations are essential in the study ofstellar atmospheres. The goal of this CNIC proposal is to catalyze an international interdisciplinarycollaboration between the group of Prof. Ludwik Adamowicz, at the Department of Chemistryand Biochemistry, the University of Arizona (USA) and Prof. Jow-Tsong Shy, at the Departmentof Physics, the National Tsing Hua University (Taiwan) on performing very accurate experimentaland theoretical studies of the rovibrational (rovib) spectra of small hydrogen-containing moleculesand clusters. These systems constitute a significant portion of the mass of the universe and arekey to the interstellar chemistry. The goal of this collaborative is to characterize and assign therovibrational spectra of the studied molecular systems. The obtained data can be very helpful inidentifying spectral lines recorded by telescopes and assigning these lines to particular molecules andclusters. As a result, knowledge will be gained about the compositions of various domains in theuniverse and about chemistry occurring there.This collaboration brings together groups with very different research profiles. The Taiwangroup has been concerned with high-precision experimental spectroscopy studies of small neutral andcharged molecular systems. The theoretical-chemistry Arizona group has been involved in developmentand application of very accurate quantum-mechanical methods for calculating spectra of small atomsand molecules. Both groups are accomplished in their respective fields. In this project, the theoryand the experiment will be combined in elucidation of the spectra of molecules and clusters involvinghydrogen and its isotopes. The studies are very fundamental in nature and as such they are wellsuited for NSF funding.