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Radiative lifetime measurements in TmIII with time-resolved laser spectroscopy and comparisons with HFR calculations

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Author

  • Z. S Li
  • Z. G Zhang
  • V Lokhnygin
  • Sune Svanberg
  • T Bastin
  • E Biemont
  • H. P Garnir
  • P Palmeri
  • P Quinet

Summary, in English

Natural radiative lifetimes of eight levels in Tm m were measured with the time-resolved laser-induced fluorescence (LIF) technique. Free doubly ionized thulium ions were obtained in a laser-produced plasma. Three even-parity levels were excited from the ground state with one-photon excitation, using a laser system generating pulses of 1 ns duration. Five odd-parity levels were excited from the ground state with two-photon excitation, where a picosecond laser system was employed. In both cases, the lifetimes were evaluated from transient LIF signals detected with a fast-detection system. The experimental lifetime results were compared with Hartree-Fock calculations including relativistic corrections. Good agreement was achieved for the 4f(12)6p levels while larger discrepancies are noted for some 4f(12)5d levels.

Department/s

Publishing year

2001

Language

English

Pages

1349-1359

Publication/Series

Journal of Physics B: Atomic, Molecular and Optical Physics

Volume

34

Issue

8

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0953-4075