arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.13020astro-ph.EPastro-ph.SRphysics.chem-ph
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ExoMol行列表-- XL。水合氢离子(H $_3$ O $^+$)的振转分子谱线列表

ExoMol line lists -- XL. Ro-vibrational molecular line list for the hydronium ion (H$_3$O$^+$)

S. N. Yurchenko, Jonathan Tennyson, Steve Miller, V. V. Melnikov, J. O'Donoghue, L. Moore

摘要:

计算水合氢(H $_3$ $^{16}$ O $^+$)的新的线列表。该谱线是基于一个新的从头计算偶极矩曲面(CCSD(T)/aug-cc-pVQZ)和一个新的经验势能面(PES)。H $_3$ O $^+$的经验PES是通过对从文献中收集的实验确定的振转能量进行全局拟合来精炼从头算表面而获得的,所述文献包括地面、$ν_1^{\pm}$、$ν_2^{\pm}$、$2ν_2^{\pm}$、$ν_3^{\pm}$和$ν_4^{\pm}$振动态。该线路表涵盖了高达10 000 cm $^{-1}$(波长$>1 μ$ m)的波数范围,并应在高达$T=1500$ K的温度下完成。这是H $_3$ O $^+$的第一个全面的线列表,具有广泛的波数覆盖范围和准确的过渡概率。讨论了太阳系巨行星和系外行星光谱中水合氢离子探测的前景。eXeL细胞系列表可从ExoMol和CDS数据库公开获得。

英文摘要:

A new line list for hydronium (H$_3$$^{16}$O$^+$) is computed. The line list is based on a new ab initio dipole moment surface (CCSD(T)/aug-cc-pVQZ) and a new empirical potential energy surface (PES). The empirical PES of H$_3$O$^+$ was obtained by refining an ab initio surface through a global fit to the experimentally determined ro-vibrational energies collected from the literature covering the ground, $ν_1^{\pm}$, $ν_2^{\pm}$, $2ν_2^{\pm}$, $ν_3^{\pm}$ and $ν_4^{\pm}$ vibrational states. The line list covers the wavenumber range up to 10 000 cm$^{-1}$ (wavelengths $>1 μ$m) and should be complete for temperatures up to $T=1500$ K. This is the first comprehensive line list for H$_3$O$^+$ with extensive wavenumber coverage and accurate transitional probabilities. Prospects of detection of hydronium in spectra of solar system giant planets as well as exoplanets are discussed. The eXeL line list is publicly available from the ExoMol and CDS databases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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