High resolution isotope shifts and hyperfine structure measurements of tungsten by laser-induced fluorescence spectroscopy
Abstract
Isotope shifts and hyperfine structure of tungsten were studied in the near UV range. We have used laser-induced fluorescence spectroscopy on a pulsed supersonic beam to probe the 5D0 → 5F1 transition at 384.9 nm, 7S3 → 7P4 transition at 400.9 nm and 7S3 → 7P3 transition at 407.4 nm. Three new magnetic hyperfine constants are reported for 7P3,7P4 and 5F1 states. The isotope shifts of the 384.9 nm transition are presented for the first time, and the isotope shifts of 400.9 and 407.4 nm transitions are measured with an order of magnitude higher precision compared to the previous measurements. As a result, the nuclear parameters λ and λrel are extracted from the isotope shifts with an improved precision.
- Publication:
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Journal of Physics B Atomic Molecular Physics
- Pub Date:
- April 2013
- DOI:
- 10.1088/0953-4075/46/7/075003
- arXiv:
- arXiv:1212.5718
- Bibcode:
- 2013JPhB...46g5003L
- Keywords:
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- Physics - Atomic Physics
- E-Print:
- 15 pages, 8 figures