Spectroscopy of barium atoms in liquid and solid helium matrices
- Lebedev, Victor Département de Physique, Université de Fribourg, Switzerland
- Moroshkin, Peter Département de Physique, Université de Fribourg, Switzerland
- Weis, Antoine Département de Physique, Université de Fribourg, Switzerland
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03.08.2011
Published in:
- Physical Review A - Atomic, Molecular and Optical Physics. - 2011, vol. 84, no. 2, p. 022502
English
We present an exhaustive overview of optical absorption and laser-induced fluorescence lines of Ba atoms in liquid and solid helium matrices in visible and near-infrared spectral ranges. Due to the increased density of isolated atoms, we have found a large number of spectral lines that were not observed in condensed helium matrices before. We have also measured the lifetimes of metastable states. The lowest ³D₁ metastable state has lifetime of 2.6 s and can be used as an intermediate state in two-step excitations of high-lying states. Various matrix-induced radiationless population transfer channels have been identified.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 27299
- DOI 10.1103/PhysRevA.84.022502
- Persistent URL
- https://folia.unifr.ch/unifr/documents/302157
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