A new analysis of the ν2 fundamental band of H2O^＋＊

This paper reports that the absorption spectra of H2O^＋ have been measured by tunable mid-infrared diode laser spectroscopy in the spectral range of 1100-1380 cm^-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 ν2 fundamental band of H2O^＋ （X^2B1）. 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 ν2=1 vibrational state of H2O＋.

A new analysis of the ν2 fundamental band of H2O+

This paper reports that the absorption spectra of H$_{2}$O$^{ + }$ have been measured by tunable mid-infrared diode laser spectroscopy in the spectral range of 1100--1380\,cm$^{ - 1}$. The H$_{2}$O$^{ + }$ ions are generated in an AC glow discharge of the gaseous mixtures of H$_{2}$O/He and detected with the velocity modulation technique. Forty new lines are assigned to the $\nu _{2}$ fundamental band of H$_{2}$O$^{ + }$ ($\tilde {X}{ }^2B_1 )$. 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 H$_{2}$O$^{ + }$.