Measurements of transition probabilities of some Cl and OI spectral lines in the nearinfrared

The radiation of a wall-stabilized arc (operating in argon with small admixtures Of CO(2)) was studied to determine relative transition probabilities for components of some infrared multiplets of neutral carbon and oxygen (wavelengths between 800 and 1500nm). The absolute transition probabilities were obtained by normalisation of relative values received for carbon and oxygen lines: CI lambda=940.573nm, A(ki)=2.9.10(7) s(-1); OI lambda = 844.65 nm, A(ki) = 3.2 (.) 107 s(-1) as standards taken from literature. An arc current of 35 A allows the diagnostic of this plasma under assumption of local thermodynamic equilibrium (LTE) in the created plasma. The A(ki)-values obtained are compared to available experimental and theoretical data.