$V_2$ – dependence of rotational corrections to the effective dipole moment of Í$_{2}$Î molecule and its effect on line broadening and line shift coefficients
Abstract:
The dependence of rotational correction terms of the effective dipole moment of Í$_{2}$Î molecule on the vibrational quantum number $v_2$ which corresponds to the large amplitude motion is obtained in the numerical calculations. Different dipole surfaces of Í$_{2}$Î molecule as well as different intra-molecular potentials were used. The effect of the rotational corrections on the calculated line broadening and line shifts by Ar, Kr, H$_2$ and He pressure was analyzed. It is shown that this effect is significant for a shifting of pure rotational lines and rovibrational lines for which the difference in rotational quantum number $K_a$ from the initial and final states of the transition greater (or equal) to three.
Keywords:water vapor molecule, dipole moment, rotational corrections, line broadening and line shifting.
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