Abstract:
Measurements were made of the saturation parameters of CH3OH and CD3OD absorption lines at the emission frequencies of a CO2 laser. In the case of CH3OH molecules an investigation was made of the pressure dependence of the saturation parameter in the 26–200 Pa range. It was observed that at low pressures the saturation parameter decreased with increasing pressure. This anomalous dependence was explained by allowing for thermal effects taking place in the gas.