CO在N2中纯旋转R(0)线的碰撞参数：实验与理论对比

IF 2.3 3区物理与天体物理 Q2 OPTICS

Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-02-07 DOI:10.1016/j.jqsrt.2025.109379

D.S. Makarov, I.N. Vilkov, T.A. Galanina, E.A. Serov, M.A. Koshelev, M.Yu. Tretyakov

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引用次数: 0

摘要

在压力为0.1 ~ 1500 Torr，温度为238 ~ 353 K的条件下，用两种不同的能谱仪研究了CO分子受N2碰撞扰动后第一次旋转跃迁的谱线形状。线强度、移动、混合、展宽和底层连续系数被检索。将实验速度依赖（SD）展宽参数及其温度依赖与最近的量子散射计算结果进行了比较，结果一致，但指出CO-N2碰撞系统的理论方法可能需要改进。

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Collisional parameters of the pure rotational R(0) line of CO in N2: Experiment versus theory

Line shape of the first rotational transition of the CO molecule perturbed by N

_{2}

collisions was studied beyond the traditional Voigt profile at pressures from 0.1 up to 1500 Torr and temperatures from 238 up to 353 K using two different spectrometers with complementary abilities. Line intensity, shifting, mixing, broadening, and underlying continuum coefficients were retrieved. The experimental speed dependence (SD) broadening parameters and their temperature dependence were compared to the results of the recent quantum scattering calculations showing fair agreement yet pointing to possible necessity of improvement of the theoretical approach to the CO–N

_{2}

collisional system.

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来源期刊

Journal of Quantitative Spectroscopy & Radiative Transfer 物理-光谱学

CiteScore

5.30

自引率

21.70%

发文量

273

审稿时长

58 days

期刊介绍： Papers with the following subject areas are suitable for publication in the Journal of Quantitative Spectroscopy and Radiative Transfer: - Theoretical and experimental aspects of the spectra of atoms, molecules, ions, and plasmas. - Spectral lineshape studies including models and computational algorithms. - Atmospheric spectroscopy. - Theoretical and experimental aspects of light scattering. - Application of light scattering in particle characterization and remote sensing. - Application of light scattering in biological sciences and medicine. - Radiative transfer in absorbing, emitting, and scattering media. - Radiative transfer in stochastic media.