Detection and frequency measurement of rotational transitions of molecular anions

分子阴离子旋转跃迁的检测和频率测量

• 批准号: 14540468
• 负责人: MATSUSHIMA Fusakazu
• 金额: $ 2.3万
• 依托单位: Toyama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540468/
• 关键词: molecule; spectroscopy; laser; far-infrared; rotational spectra; negative ion; anion

Pure rotational transitions of molecular anion(negatively charged molecular ion) in the far-infrared region have been successfully detected by the tunable far-infrared spectrometer in Toyama University. The low-J rotational lines, J=1←0,2←1,3←2,and 4←3 of the OH^-anion were observed and their frequencies were precisely measured. Molecular parameters which are more precise by one or two orders of magnitude were obtained by the analysis of the present data.The present research project made it possible to open a new field of precise rotational spectroscopy of molecular anions.

用富山大学的可调谐远红外光谱仪成功地探测到了分子阴离子（带负电荷的分子离子）在远红外区的纯转动跃迁。观察到OH^-负离子的低J转动谱线J=1 <$0、2 <$1、3 <$2和4 <$3，并精确测量了它们的频率。通过对现有数据的分析，得到了比现有数据精确一到两个数量级的分子参数，为分子阴离子的精细转动光谱研究开辟了新的领域。