Jet-Cooled Optical Spectroscopy of FeN between 16 300 and 21 600 cm−1
✍ Scribed by Kosuke Aiuchi; Kazuhiko Shibuya
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 652 KB
- Volume
- 204
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
We report the first gas-phase spectroscopic study of iron mononitride (FeN). FeN molecules were generated by the reaction of laser-ablated Fe atoms with NH 3 under supersonic jet-cooled conditions. Laser-induced fluorescence excitation spectra were measured between 16 300 and 21 600 cm Ϫ1 , and rotational analyses have been performed for about 25 vibronic bands. The ⍀ value of the ground state has been determined to be 5 2 , which could be the spin-orbit component of 2 ⌬ ( . . . 1␦ 3 9 2 ) or 4 ⌸ ( . . . 1␦ 3 9 1 4 1 ). The excited states in the visible absorption region show very complicated rovibronic structures due to heavy perturbations. Excited state lifetimes, 56 Fe 14 N/ 56 Fe 15 N isotope shifts, and dispersed fluorescence spectra were measured for the majority of the bands, which were classified into the five ⍀ ϭ 5 2 -X⍀ ϭ 5 2 band systems.