Isotope effects in the molecular spectrum of plutonium hexafluoride
- 1 November 1976
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 65 (9) , 3486-3492
- https://doi.org/10.1063/1.433575
Abstract
The first evidence for an isotope shift in the near infrared region of the spectrum of an actinide molecule, PuF6, is reported. Using samples of 239PuF6 and 242PuF6, isotope shifts were found in the absorption region near 8000 Å. Shifts of 0.3 to 1.2 cm−1 were observed. The data are interpreted as indicating that some of the absorption bands in this region are vibronically induced electronic transitions which result from coupling of one or more quantum changes in the asymmetric ν3(F1u) and ν4(F1u) vibrations to electronic states of the nonbonding 5f electrons in the molecule.Keywords
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