Radiative lifetimes of 11 levels belonging to the 5s5p 1 P o 1 , 5snd 3 D 1,2 ͑n =6-9͒ and 5sns 3 S 1 ͑n =7,8͒ series of Cd I, and of 5 levels of Cd II (i.e., 4d 10 5p 2 P o 1/2,3/2 , 4d 10 6s 2 S 1/2 , and 4d 10 5d 2 D 3/2,5/2) have been measured using the time-resolved laser-induced fluorescence technique. Free neutral and singly ionized cadmium atoms have been generated by laser ablation. Single-or two-step excitation processes were considered to populate the levels under study. Branching fractions of Cd II transitions have been measured by laser-induced breakdown spectroscopy. Transition probabilities and oscillator strengths for Cd I and Cd II spectral lines originating from the above states as well as from the 4d 9 5s 2 2 D 3/2,5/2 states of Cd II have been deduced by combining the experimental lifetimes and theoretical branching fractions obtained in multiconfigurational relativistic Hartree-Fock calculations taking core-polarization effects into account.

Radiative lifetimes of 6sns S-3(1) and 6snd D-3(1) excited states of HgIBlagoev, K; Pentchev, V; Biemont, E; Zhang, Zhiguo; Wahlström, Claes-Göran; Svanberg, Sune General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Natural radiative lifetimes have been measured along the 6sns 3 S 1 (nϭ7 -10) and 6snd 3 D 1 (n ϭ6 -11) Rydberg series of neutral mercury using time-resolved laser-induced fluorescence spectroscopy in a laser-produced mercury plasma. The states of Hg I investigated in the present work were populated from the ground state by a stepwise excitation process. Relativistic Hartree-Fock calculations, including intravalence interactions and core-polarization effects, have been performed and the theoretical lifetimes have been compared with the measurements.

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