Radiative lifetime and transition probabilities inCdIandCdII

Abstract

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.

Lifetime measurements in neutral and singly ionized vanadium

“…We performed the evaluation process by fitting the experimental fluorescence decay curve to a convolution of the recorded excitation pulse and a pure exponential function. 19 Typical experimental curves for the exponential (V I: 30 635.59 cm −1 ) and the deconvolution fitting procedures (V II: 46 690.42 cm −1 ) are shown in Fig. 1.…”

Transition probabilities and lifetimes in neutral and singly ionized osmium and the Solar osmium abundance

“…1) with an 8-ns pulse duration, a single pulse energy of 400 mJ and a repetition rate of 10 Hz, was first sent into a stimulated Brillouin scattering (SBS) cell to compress the pulse duration (Schiemann et al 1998;Xu et al 2004). The pulse duration of the output from the SBS temporal compressor could be shortened to about 1 ns.…”

Ab initiorelativistic many-body calculation of hyperfine splittings ofC113d+

“…f a Time-resolved laser-induced fluorescence [17] b Hanle-theory [18] c Beam-laser, beam foil (ANDC) [19] d Phase-shift method [20] e Ultrafast laser pulses [21] f Many-body third order perturbation theory [22] g Hanle [23] We report our lifetime results along with the other calculated and measured results in table I.…”