Resonant two-photon ionization spectroscopy of jet-cooled UN: Determination of the ground state
Journal of Chemical Physics, ISSN: 0021-9606, Vol: 138, Issue: 18, Page: 184303
2013
- 34Citations
- 17Captures
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Metrics Details
- Citations34
- Citation Indexes34
- 34
- CrossRef30
- Captures17
- Readers17
- 17
Article Description
The optical transitions of supersonically cooled uranium nitride (UN) have been investigated in the range from 19 200 to 23 900 cm using resonant two-photon ionization spectroscopy. A large number of bands have been observed, of which seven have been rotationally resolved and analyzed. All are found to arise from the same state, which is presumably the ground state of the molecule. From the analysis of the bands, the ground state has Ω = 3.5, with a bond length of 1.7650(12) Å. Comparisons to the known isovalent molecules are made, and the variations in ground state configuration are explained in terms of the configurational reordering that occurs with changes in the nuclear and ligand charges. It is concluded that the UN molecule is best considered as a UN species in which the closed shell nitride ligand interacts with a U ion. The ground state of the molecule derives from a U ion in its 7s5f atomic configuration. © 2013 AIP Publishing LLC.
Bibliographic Details
AIP Publishing
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