Abstract
Emission spectra of the A(2)Pi(3/2)-X-2 Sigma(+) (0, 1), 1 (0, 0), and (1, 0) bands and the B-2 Sigma(+)-X-2 Sigma(+) (0,1), (0,0), (1,0), (2, 0), and (3, 1) bands of ScS have been recorded in the 10 000-13 500 cm(-1) region at a resolution of 0.05 cm(-1) using a Fourier transform (FT) spectrometer. The A(2)Pi(gamma)-X-2 Sigma(+) (1, 0) band as well as the B-2 Sigma(+)-X-2 Sigma(+) (0,0) and (1,0) bands have been recorded at high resolution (+/- 0.001 cm(-1)) by laser excitation spectroscopy using a supersonic molecular beam source. The FT spectral features range up to N = 148, while those recorded with the laser cover the "low-N" regions. The lines recorded with the laser exhibit splittings due to the Sc-45 (I = 7/2) magnetic hyperfine interactions, which are large (similar to 6.65 GHz) in the X-2 Sigma(+) state and much smaller in the B-2 Sigma(+) and A(2)Pi states. The energy levels were modeled using a traditional 'effective' Hamiltonian approach, and improved spectroscopic constants were extracted and compared with previous determinations and theoretical predictions. (C) 2006 Elsevier Inc. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 36-45 |
| Number of pages | 10 |
| Journal | JOURNAL OF MOLECULAR SPECTROSCOPY |
| Volume | 237 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - May 2006 |
Keywords
- scandium monosulfide
- Fourier transform emission
- laser excitation spectroscopy
- ROTATIONAL ANALYSIS
- HYPERFINE INTERACTIONS
- DIPOLE-MOMENTS
- MONOXIDE
- SPECTRA
- STATE