Water vapor line profile parameters induced by helium pressure

The averaged energy difference method has been applied to calculate the broadening coefficients of rotation vibration water vapor lines induced by helium pressure. The calculations have been performed for a wide range of rotational quantum numbers (the averaged energy difference method have been applied for $J$ from 0 to 20, interpolation of the $J$-dependence have been used for $J$ from 20 to 50) in the spectral range from 500 to 10000 cm$^{-1}$. We compared the calculated H$_2$O–He line broadening coefficients with the literature data, and a good agreement have been obtained. The temperature dependence for linewidths are calculated.