Temperature dependent pressure induced linewidths of O216 and 18O16O transitions in nitrogen, oxygen and air

The temperature dependent pressure induced broadening of several oxygen resonant transitions have been measured. For O216 the isolated magnetic fine-structure transition JN′′←JN=11←10 and the magnetic rotational transition 32←12 are investigated in both nitrogen and oxygen. Additionally, pressure broadening of the magnetic rotational transition of 18O16O 21←01 is measured in air. This work improves precision and accuracy of the linewidth of the fine-structure transition and provides the first temperature dependent linewidth measurements at higher frequency.