https://doi.org/10.1140/epjd/e2011-20459-6
Regular Article
Radiative lifetimes of highly excited odd-parity levels of neutral lanthanum
1
College of Physics, Jilin University, Changchun
130012, P.R.
China
2
Key Lab of Coherent Light, Atomic and Molecular Spectroscopy,
Ministry of Education, Changchun
130012, P.R.
China
a e-mail: dai@jlu.edu.cn
Received:
8
August
2011
Received in final form:
25
August
2011
Published online:
22
November
2011
New radiative lifetimes of 24 high-lying odd-parity levels of neutral lanthanum are reported using time-resolved laser-induced fluorescence (TR-LIF) spectroscopy. The investigated levels ranging from 34 213 to 40 910 cm-1 were excited from the ground or metastable states using one-photon excitation. La atoms are produced by laser ablation on a solid La sample. The lifetimes were evaluated from transient LIF signals detected with a fast detection system. The obtained lifetime results, generally with uncertainties less than ±7%, are in the range from 15.7 to 121 ns.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2011
