Abstract
Measurements of the lifetimes for the 5d 107p 2P 1 2 and 2P 3 2 levels in Hg II have been made using beam-foil excitation. The lifetimes were extracted both by exponential curve fitting of the individual decay curves and by joint analysis of the cascade-correlated decay curves using the ANDC method. The results are τ(J= 1 2 )=14.5±1.0 ns and τ(J= 3 2 )=1.2±0.2 ns . Theoretical computations are presented indicating that this large J dependence results from the combined influence of a near-lying cancellation node and CI-induced decay to the 5d 96s 2 levels.
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