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+.
Received: 14 March 2008
Revised: 08 April 2008
Accepted manuscript online:
(Vibronic, rovibronic, and rotation-electron-spin interactions)
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10544002 and
10604019).
Cite this article:
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) A new analysis of the $\nu_2$ fundamental band of H2O+ 2008 Chin. Phys. B 17 4485
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
