Spectroscopy of the Mg 1S0–3P1 intercombination transition in a luminescent cell with walls at room temperature

Absorption at the ¹S₀–³P₁ intercombination transition in magnesium atoms is studied experimentally. The saturated absorption resonance of thermal magnesium atoms in a compact low-pressure absorption cell with walls at room temperature was recorded for the first time by using the spatial trapping of excited magnesium atoms in the detection region and the time separation of luminescence excitation and detection.