三氟乙酸的旋转光谱：啁啾脉冲光谱测量的扩展

IF 1.4 4区物理与天体物理 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL

Journal of Molecular Spectroscopy Pub Date : 2025-02-01 DOI:10.1016/j.jms.2025.111986

Greta Naso , Filippo Baroncelli , Luca Evangelisti , Assimo Maris , Sonia Melandri

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引用次数: 0

摘要

用啁啾脉冲傅立叶变换微波（CP-FTMW）光谱仪记录了室温下18-26 GHz频率范围内三氟乙酸的旋转光谱。超过180条新的谱线已经被确定并被分配到振动基态内的跃迁。通过结合先前研究的光谱数据，进行了全局拟合，从而改进了分子参数。提出了使用沃森s -还原和a -还原的两个拟合模型，允许确定第一个模型的h3和第二个模型的ΦJK， ΦKJ和ϕK。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Rotational spectrum of trifluoroacetic acid: Extension of the measurements by chirped-pulse spectroscopy

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Rotational spectrum of trifluoroacetic acid: Extension of the measurements by chirped-pulse spectroscopy

The rotational spectrum of trifluoroacetic acid has been recorded at room temperature in the 18–26 GHz frequency range using a chirped-pulse Fourier transform microwave (CP-FTMW) spectrometer. More than 180 new spectral lines have been identified and assigned to transitions within the vibrational ground state. A global fitting has been performed by incorporating spectroscopic data from previous studies, leading to the refinement of the molecular parameters. Two fitting models using Watson’s

S

-reduction and

A

-reduction are proposed, allowing the determination of

h_{3}

for the first model and

Φ_{J K}

Φ_{K J}

, and

ϕ_{K}

for the second one.

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来源期刊

Journal of Molecular Spectroscopy 物理-光谱学

CiteScore

2.70

自引率

21.40%

发文量

审稿时长

29 days

期刊介绍： The Journal of Molecular Spectroscopy presents experimental and theoretical articles on all subjects relevant to molecular spectroscopy and its modern applications. An international medium for the publication of some of the most significant research in the field, the Journal of Molecular Spectroscopy is an invaluable resource for astrophysicists, chemists, physicists, engineers, and others involved in molecular spectroscopy research and practice.