Pressure broadening studies on vibration-rotation bands III. Experimental methods for determining line widths

Abstract

The basis of experimental methods for determining the line widths in vibration-rotation bands of diatomic molecules when broadened by foreign gases is explained. These involve the measurement of the relative self- and foreign-gas-broadening coefficients, of the 'equivalent’ line widths, or of the peak absorbance values of lines across a band. Some results on selfbroadening of CO, and DCl are compared with previous data.