High-resolution gas phase spectroscopy techniques in the microwave, millimeter-wave, and terahertz spectral ranges can be used to study complex organic molecules desorbed from interstellar ice analogue surfaces with a high sensitivity. High-resolution gas phase spectroscopy gives unambiguous information about the molecular composition, the molecular structure, and transition frequencies needed for their detection by radio telescopes in various interstellar and circumstellar environments. The results will be useful not only for interpreting astronomical spectra and understanding astrophysical processes, but also for more general studies of gas-surface chemistry. This paper presents a new experimental approach based on a combination of a chirped-pulse Fourier transform microwave spectrometer detection and a low temperature surface desorption experiment. The experimental set-up is benchmarked on the desorption of ammonia ice detected by high-resolution gas phase microwave spectroscopy.

中文翻译：

---

从冰表面解吸的分子的高分辨率气相色谱：原理验证研究

微波，毫米波和太赫兹光谱范围内的高分辨率气相光谱技术可用于以高灵敏度研究从星际冰类似物表面解吸的复杂有机分子。高分辨率气相光谱法可提供有关在星际和星际环境中用无线电望远镜进行检测所需的分子组成，分子结构和跃迁频率的明确信息。该结果不仅对解释天文光谱和理解天体物理过程有用，而且对气体表面化学的更一般研究也将是有用的。本文结合a脉冲傅立叶变换微波光谱仪检测和低温表面解吸实验，提出了一种新的实验方法。实验装置以高分辨率气相微波光谱仪检测到的氨冰的解吸为基准。