Abstract

Radiative lifetimes and branching ratios of atomic Gd were investigated by a three-step delayed photoionization method; the lifetimes of 10 even states in the 16000–18500 cm−1 region and 64 odd states in the 31000–36500 cm−1 region, and the branching ratios of 19 transitions originating from the f7ds2 9DJ=2−60 groundstate multiplets were measured for the first time. By combining these experimental lifetimes and branching ratios, oscillator strengths were determined and compared with previously reported values.

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