Journal Article

Radiative decay data for highly excited Zr <span class="smallCaps">i</span> levels

G. Malcheva, R. Mayo, M. Ortiz, J. Ruiz, L. Engström, H. Lundberg, H. Nilsson, P. Quinet, É. Biémont and K. Blagoev

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 395, issue 3, pages 1523-1528
Published in print May 2009 | ISSN: 0035-8711
Published online May 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.14629.x
Radiative decay data for highly excited Zr i levels

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Radiative lifetimes of 17 excited levels in Zr i, in the energy interval 29 000–40 974 cm−1, have been investigated using the time-resolved laser-induced fluorescence method. The levels belong to the 4d25s5p, 4d35p and 4d5s25p electronic configurations and were excited in a single-step process from either the ground term, 4d25s2 a 3F, or from the low-lying 4d25s2 a 3P and a 5F terms. For three levels, we confirm previous measurements while for 14 of the levels the lifetimes have been measured for the first time. The experimental results are compared to theoretical calculations performed with a multiconfiguration relativistic Hartree–Fock method including core-polarization effects. Theoretical transition probabilities of astrophysical interest, scaled by the experimental lifetimes, for the depopulating channels of the investigated levels are also presented.

Keywords: atomic data; atomic processes; methods: laboratory

Journal Article.  3071 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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