The goal of this work was to update and significantly improve the line lists that have been generated recently for 11 µm bands of the - and - conformer forms of nitrous acid (HONO) [Armante R, Perrin A, Kwabia Tchana F, Manceron L. The ν bands at 11 μm: linelists for the and conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database. Molecular Physics 2021;120:e1951860]. That 2019 version of the 11 µm line list was generated using the spectroscopic parameters that were available, at that time, in the literature. During the present study, we used high-resolution Fourier transform spectra recorded at 11 µm to perform a large investigation of line positions and intensities for the ν bands of the - and -conformer of HONO. The resulting set of experimental ν (absolute) intensities and of 4 energy levels were used to determine, by least squares fit computations, improved position and intensity parameters for the ν bands of the - and -conformer of HONO. For HONO, the ν band appeared not to be perturbed, while for -HONO a weak high order B-type Coriolis, coupling together the 4 and 6 energy levels was evidenced for the first time. This new list is of potential interest for the IASING (Infrared Atmospheric Sounding Interferometer - New Generation) instrument which will be launched on board the METOP-SG satellite in 2025.

中文翻译：

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亚硝酸 (HONO) 反式 (790.117 cm–1) 和顺式 (851.943 cm–1) 构象异构体 ν4 带的新谱线列表：准确位置和绝对强度


这项工作的目标是更新并显着改进最近为亚硝酸 (HONO) 的 - 和 - 构象异构体形式的 11 µm 带生成的谱线列表 [Armante R、Perrin A、Kwabia Tchana F、Manceron L. 11 μm 处的 ν 带：2019 版 GEISA 数据库中亚硝酸 (HONO) 和构象异构体形式的列表。分子物理学 2021；120：e1951860]。 2019 年版本的 11 µm 谱线列表是使用当时文献中可用的光谱参数生成的。在本研究中，我们使用在 11 µm 处记录的高分辨率傅里叶变换光谱对 HONO 的 - 和 - 构象异构体的 ν 带的谱线位置和强度进行了大量研究。得到的一组实验ν（绝对）强度和4个能级用于通过最小二乘拟合计算来确定HONO的-和-构象异构体的ν带的改进位置和强度参数。对于HONO，ν带似乎没有受到扰动，而对于-HONO，弱高阶B型科里奥利，首次证明了4和6能级耦合在一起。这份新清单可能对 IASING（新一代红外大气探测干涉仪）仪器感兴趣，该仪器将于 2025 年在 METOP-SG 卫星上发射。