[en] 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.
Disciplines :
Physics
Author, co-author :
Zhang, Z. G.
Svanberg, S.
Quinet, Pascal ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie
Palmeri, P.
Biémont, Emile ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie
Language :
English
Title :
Time-resolved laser spectroscopy of multiply ionized atoms: Natural radiative lifetimes in CeIV
Publication date :
31 December 2001
Journal title :
Physical Review Letters
ISSN :
0031-9007
eISSN :
1079-7114
Publisher :
American Physical Soc, College Pk, United States - Maryland
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Bibliography
Siems A., Luna F.R.T., Trigueiros A.G. J. Quant. Spectrosc. Radiat. Transfer 2001, 68:635.
Bredice F., Raineri M., Almandos J.R., Gallardo M., Trigueiros A.G. J. Quant. Spectrosc. Radiat. Transfer 2000, 65:805.
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