中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4485-4491.doi: 10.1088/1674-1056/17/12/026

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A new analysis of the ν2 fundamental band of H2O+

郑锐, 李松, 侯顺永, 黄光明, 段传喜   

  1. College of Physical Science and Technology, HuaZhong Normal University, Wuhan 430079, China
  • 收稿日期:2008-03-14 修回日期:2008-04-08 出版日期:2008-12-20 发布日期:2008-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10544002 and 10604019).

A new analysis of the $\nu_2$ fundamental band of H2O+

Zheng Rui (郑锐), Li Song (李松), Hou Shun-Yong (侯顺永), Huang Guang-Ming (黄光明), Duan Chuan-Xi (段传喜)   

  1. College of Physical Science and Technology, HuaZhong Normal University, Wuhan 430079, China
  • Received:2008-03-14 Revised:2008-04-08 Online:2008-12-20 Published:2008-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10544002 and 10604019).

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摘要： This paper reports that the absorption spectra of H2O+ have been measured by tunable mid-infrared diode laser spectroscopy in the spectral range of 1100--1380cm-1. The H2O+ ions are generated in an AC glow discharge of the gaseous mixtures of H2O/He and detected with the velocity modulation technique. Forty new lines are assigned to the μ2 fundamental band of H2O+ (\tilde {X}2B1 )1. The observed lines together with other data published previously are fitted to the standard effective Hamiltonian of an asymmetric top, yielding a set of improved rotational constants, spin-rotation constants and their quartic and sextic centrifugal distortion constants for the μ2=1 vibrational state of H2O+.

关键词: infrared spectra, water cations, rotational analysis

Abstract: This paper reports that the absorption spectra of H2O+ have been measured by tunable mid-infrared diode laser spectroscopy in the spectral range of 1100--1380cm-1. The H2O+ ions are generated in an AC glow discharge of the gaseous mixtures of H2O/He and detected with the velocity modulation technique. Forty new lines are assigned to the $\nu_2$ fundamental band of H2O+ ($\tilde{X}^2B_1$). The observed lines together with other data published previously are fitted to the standard effective Hamiltonian of an asymmetric top, yielding a set of improved rotational constants, spin-rotation constants and their quartic and sextic centrifugal distortion constants for the $\nu_2=1$ vibrational state of H2O+.

Key words: infrared spectra, water cations, rotational analysis

中图分类号:  (Rotational analysis)

  • 33.20.Sn
33.15.Mt (Rotation, vibration, and vibration-rotation constants) 33.20.Tp (Vibrational analysis) 33.20.Wr (Vibronic, rovibronic, and rotation-electron-spin interactions)