Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV.
Radiative lifetimes have been measured for two excited levels of Ce IV using the time-resolved laser-induced fluorescence technique. Ce3+ ions were produced in a laser-induced plasma. In the measurements, a suitable magnetic field was applied to reduce the recombination between electrons and the ions and thus the background light from the recombination, and special care was exercised to avoid flight-out-of-view effects on the lifetime measurements for the high-velocity ions. The experimental lifetime results, tau = 30(2) ns for the level 49 737 cm(-1) and tau = 30(3) ns for the level 52 226 cm(-1), were compared with relativistic Hartree-Fock calculations (tau = 30.5 and 30.0 ns) indicating a particularly excellent agreement.
Zhang
Z G
ZG
Department of Physics, Lund Institute of Technology, P.O. Box 118, S-211 00 Lund, Sweden.
Svanberg
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S
Quinet
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Palmeri
P
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Biémont
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