Experimental Determination of Absolute A Coefficients for 'Forbidden' Atomic Oxygen Lines

We have obtained the transition probabilities of the 5577 A, and 6300 A lines of [OI] by simultaneously measuring the absolute intensity and the population of the upper state of each line in an inert gas–oxygen discharge. Further, we have obtained A values for the 2972 A and 6364 A lines by measuring relative intensities of lines from the 1S0 and 1D2 levels.