Journal Article

Radiative lifetime measurements of highly excited even-parity levels of Eu <span class="smallCaps">i</span>

Wei Zhang, Shan Du, Yanyan Feng, Liyun Jiang, Zhankui Jiang and Zhenwen Dai

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 413, issue 3, pages 1803-1809
Published in print May 2011 | ISSN: 0035-8711
Published online May 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.18257.x
Radiative lifetime measurements of highly excited even-parity levels of Eu i

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Natural radiative lifetime measurements have been performed for 186 even-parity highly excited levels of neutral europium in the energy range from 27852.90 to 45106.83 cm−1 using a time-resolved laser-induced fluorescence technique in a laser-produced plasma. This work is the largest-scale laboratory study to date of Eu i radiative lifetimes using modern methods. The lifetime values measured in this paper are in the range from 17.0 to 3569 ns. Comparison with previous data reveals a good level of agreement. Unique J-values of the 43438.19- and 43637.11-cm−1 levels have been assigned. The present work will be useful for extending the set of oscillator strengths available for Eu i.

Keywords: atomic data; atomic processes; methods: laboratory; techniques: spectroscopic

Journal Article.  2384 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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