Abstract
The resonance escape factor Λ r of two resonance lines of sodium at 3303 and 5890 A ̊ and strontium at 4078 and 4607 A ̊ have been determined from atomic absorption measurements of the radiation emitted from sodium and strontium hollow cathode lamps. The calculations have been carried out for dispersion (Lorentz) and Voigt broadened line profiles for the flame at a temperature of 2400 K. The dependence of the escape factors on the optical depth τ o in the line center is considered. The change of resonance escape factors with the total number of absorbing atoms in the ground state N ( cm −3) averaged over a length L is also discussed.
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