Measurement of the absolute oscillator strengths of gadolinium using an atomic vapor produced by electron beam heating

The absolute values of the oscillator strength ? were measured for the six spectral lines of Gd by means of laser absorption spectroscopy with the atomic vapor produced by electron beam heating. The ? values obtained for the transition are 0–17381 cm^?1, 215–17750 cm^?1, 533–17795 cm^?1, 999–18070 cm^?1, 999–17931 cm^?1, 1719–18070 cm^?1 were obtained to be 0.0036, 0.012, 0.014, 0.019, 0.0075 and 0.039, respectively. The error of ? values was 24% due to uncertainty of metastable states' density.