A study of the A2Π-X2Σ+ and B2Σ+-X2Σ+ band systems of scandium monosulfide, ScS, using Fourier transform emission spectroscopy and laser excitation spectroscopy

Jamie Gengler, Jinhai Chen, Timothy Steimle, R. S. Ram, P. F. Bernath

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Emission spectra of the A2Π3/2-X2Σ+ (0, 1), (0, 0), and (1, 0) bands and the B2Σ+-X2Σ+ (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 A2Πr-X2Σ+ (1, 0) band as well as the B2Σ+-X2Σ+ (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 45Sc (I = 7/2) magnetic hyperfine interactions, which are large (∼6.65 GHz) in the X2Σ+ state and much smaller in the B2Σ+ and A2Π 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.

Original languageEnglish (US)
Pages (from-to)36-45
Number of pages10
JournalJournal of Molecular Spectroscopy
Volume237
Issue number1
DOIs
StatePublished - May 2006

Fingerprint

Scandium
Laser excitation
scandium
Emission spectroscopy
Fourier transforms
Spectroscopy
Hamiltonians
Molecular beams
Lasers
Electron energy levels
spectroscopy
excitation
lasers
Spectrometers
molecular beams
emission spectra
energy levels
spectrometers
high resolution
predictions

Keywords

  • Fourier transform emission
  • Laser excitation spectroscopy
  • Scandium monosulfide

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

A study of the A2Π-X2Σ+ and B2Σ+-X2Σ+ band systems of scandium monosulfide, ScS, using Fourier transform emission spectroscopy and laser excitation spectroscopy. / Gengler, Jamie; Chen, Jinhai; Steimle, Timothy; Ram, R. S.; Bernath, P. F.

In: Journal of Molecular Spectroscopy, Vol. 237, No. 1, 05.2006, p. 36-45.

Research output: Contribution to journalArticle

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abstract = "Emission spectra of the A2Π3/2-X2Σ+ (0, 1), (0, 0), and (1, 0) bands and the B2Σ+-X2Σ+ (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 A2Πr-X2Σ+ (1, 0) band as well as the B2Σ+-X2Σ+ (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 45Sc (I = 7/2) magnetic hyperfine interactions, which are large (∼6.65 GHz) in the X2Σ+ state and much smaller in the B2Σ+ and A2Π 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.",
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T1 - A study of the A2Π-X2Σ+ and B2Σ+-X2Σ+ band systems of scandium monosulfide, ScS, using Fourier transform emission spectroscopy and laser excitation spectroscopy

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AU - Chen, Jinhai

AU - Steimle, Timothy

AU - Ram, R. S.

AU - Bernath, P. F.

PY - 2006/5

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AB - Emission spectra of the A2Π3/2-X2Σ+ (0, 1), (0, 0), and (1, 0) bands and the B2Σ+-X2Σ+ (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 A2Πr-X2Σ+ (1, 0) band as well as the B2Σ+-X2Σ+ (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 45Sc (I = 7/2) magnetic hyperfine interactions, which are large (∼6.65 GHz) in the X2Σ+ state and much smaller in the B2Σ+ and A2Π 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.

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