Atomic transition probabilities for the Ar i 4s-5ptransition array

We have determined the transition probabilities for 23 lines of the Ar i 4s-5p array by emission spectroscopy utilizing a wall-stabilized arc. The seven remaining lines of this transition array were either very weak or overlapped strongly with other lines so that they could not be reliably measured. We placed our relative data on an absolute scale by applying the result of a recent critical analysis for the prominent 4s-5p line at 430.01 nm.